id	sid	tid	token	lemma	pos
sc-1149	1	1	c	c	X
sc-1149	1	2	-	-	PUNCT
sc-1149	1	3	abac	abac	ADJ
sc-1149	1	4	:	:	PUNCT
sc-1149	1	5	an	an	DET
sc-1149	1	6	abac	abac	ADJ
sc-1149	1	7	based	base	VERB
sc-1149	1	8	model	model	NOUN
sc-1149	1	9	for	for	ADP
sc-1149	1	10	collaboration	collaboration	NOUN
sc-1149	1	11	in	in	ADP
sc-1149	1	12	multi	multi	ADJ
sc-1149	1	13	-	-	ADJ
sc-1149	1	14	tenant	tenant	ADJ
sc-1149	1	15	environment	environment	NOUN
sc-1149	1	16	mohamed	mohamed	PROPN
sc-1149	1	17	amine	amine	PROPN
sc-1149	1	18	madani1	madani1	PROPN
sc-1149	1	19	,	,	PUNCT
sc-1149	1	20	*	*	PRON
sc-1149	1	21	,	,	PUNCT
sc-1149	1	22	mohammed	mohammed	PROPN
sc-1149	1	23	erradi1	erradi1	PROPN
sc-1149	1	24	,	,	PUNCT
sc-1149	1	25	yahya	yahya	PROPN
sc-1149	1	26	benkaouz2	benkaouz2	PROPN
sc-1149	2	1	1networking	1networking	NUM
sc-1149	2	2	and	and	CCONJ
sc-1149	2	3	distributed	distribute	VERB
sc-1149	2	4	systems	system	NOUN
sc-1149	2	5	research	research	NOUN
sc-1149	2	6	group	group	NOUN
sc-1149	2	7	,	,	PUNCT
sc-1149	2	8	itm	itm	PROPN
sc-1149	2	9	team	team	PROPN
sc-1149	2	10	,	,	PUNCT
sc-1149	2	11	ensias	ensias	PROPN
sc-1149	2	12	,	,	PUNCT
sc-1149	2	13	mohammed	mohammed	PROPN
sc-1149	2	14	v	v	PROPN
sc-1149	2	15	university	university	PROPN
sc-1149	2	16	in	in	ADP
sc-1149	2	17	rabat	rabat	NOUN
sc-1149	2	18	,	,	PUNCT
sc-1149	2	19	morocco	morocco	PROPN
sc-1149	2	20	2conception	2conception	PROPN
sc-1149	2	21	and	and	CCONJ
sc-1149	2	22	systems	system	NOUN
sc-1149	2	23	laboratory	laboratory	NOUN
sc-1149	2	24	,	,	PUNCT
sc-1149	2	25	fsr	fsr	PROPN
sc-1149	2	26	,	,	PUNCT
sc-1149	2	27	mohammed	mohammed	PROPN
sc-1149	2	28	v	v	PROPN
sc-1149	2	29	university	university	PROPN
sc-1149	2	30	in	in	ADP
sc-1149	2	31	rabat	rabat	NOUN
sc-1149	2	32	,	,	PUNCT
sc-1149	2	33	morocco	morocco	PROPN
sc-1149	2	34	abstract	abstract	PROPN
sc-1149	2	35	collaborative	collaborative	PROPN
sc-1149	2	36	systems	system	NOUN
sc-1149	2	37	allow	allow	VERB
sc-1149	2	38	a	a	DET
sc-1149	2	39	group	group	NOUN
sc-1149	2	40	of	of	ADP
sc-1149	2	41	users	user	NOUN
sc-1149	2	42	to	to	PART
sc-1149	2	43	collaborate	collaborate	VERB
sc-1149	2	44	through	through	ADP
sc-1149	2	45	distributed	distribute	VERB
sc-1149	2	46	platforms	platform	NOUN
sc-1149	2	47	in	in	ADP
sc-1149	2	48	order	order	NOUN
sc-1149	2	49	to	to	PART
sc-1149	2	50	perform	perform	VERB
sc-1149	2	51	a	a	DET
sc-1149	2	52	common	common	ADJ
sc-1149	2	53	task	task	NOUN
sc-1149	2	54	.	.	PUNCT
sc-1149	3	1	collaborators	collaborator	NOUN
sc-1149	3	2	usually	usually	ADV
sc-1149	3	3	use	use	VERB
sc-1149	3	4	cloud	cloud	NOUN
sc-1149	3	5	-	-	PUNCT
sc-1149	3	6	based	base	VERB
sc-1149	3	7	solutions	solution	NOUN
sc-1149	3	8	to	to	PART
sc-1149	3	9	outsource	outsource	VERB
sc-1149	3	10	their	their	PRON
sc-1149	3	11	data	datum	NOUN
sc-1149	3	12	and	and	CCONJ
sc-1149	3	13	to	to	PART
sc-1149	3	14	benefit	benefit	VERB
sc-1149	3	15	from	from	ADP
sc-1149	3	16	the	the	DET
sc-1149	3	17	cloud	cloud	ADJ
sc-1149	3	18	capabilities	capability	NOUN
sc-1149	3	19	.	.	PUNCT
sc-1149	4	1	ensuring	ensure	VERB
sc-1149	4	2	access	access	NOUN
sc-1149	4	3	control	control	NOUN
sc-1149	4	4	in	in	ADP
sc-1149	4	5	a	a	DET
sc-1149	4	6	cloud	cloud	NOUN
sc-1149	4	7	-	-	PUNCT
sc-1149	4	8	based	base	VERB
sc-1149	4	9	collaborative	collaborative	ADJ
sc-1149	4	10	session	session	NOUN
sc-1149	4	11	is	be	AUX
sc-1149	4	12	an	an	DET
sc-1149	4	13	important	important	ADJ
sc-1149	4	14	problem	problem	NOUN
sc-1149	4	15	that	that	PRON
sc-1149	4	16	should	should	AUX
sc-1149	4	17	be	be	AUX
sc-1149	4	18	addressed	address	VERB
sc-1149	4	19	,	,	PUNCT
sc-1149	4	20	especially	especially	ADV
sc-1149	4	21	in	in	ADP
sc-1149	4	22	a	a	DET
sc-1149	4	23	multi	multi	ADJ
sc-1149	4	24	-	-	ADJ
sc-1149	4	25	tenant	tenant	ADJ
sc-1149	4	26	configuration	configuration	NOUN
sc-1149	4	27	.	.	PUNCT
sc-1149	5	1	in	in	ADP
sc-1149	5	2	this	this	DET
sc-1149	5	3	paper	paper	NOUN
sc-1149	5	4	,	,	PUNCT
sc-1149	5	5	we	we	PRON
sc-1149	5	6	present	present	VERB
sc-1149	5	7	c	c	X
sc-1149	5	8	-	-	PUNCT
sc-1149	5	9	abac	abac	ADJ
sc-1149	5	10	,	,	PUNCT
sc-1149	5	11	a	a	DET
sc-1149	5	12	collaboration	collaboration	NOUN
sc-1149	5	13	attributes	attribute	VERB
sc-1149	5	14	based	base	VERB
sc-1149	5	15	access	access	NOUN
sc-1149	5	16	control	control	NOUN
sc-1149	5	17	model	model	NOUN
sc-1149	5	18	that	that	PRON
sc-1149	5	19	ensures	ensure	VERB
sc-1149	5	20	access	access	NOUN
sc-1149	5	21	control	control	NOUN
sc-1149	5	22	in	in	ADP
sc-1149	5	23	multi	multi	ADJ
sc-1149	5	24	-	-	ADJ
sc-1149	5	25	tenant	tenant	ADJ
sc-1149	5	26	cloud	cloud	NOUN
sc-1149	5	27	environments	environment	NOUN
sc-1149	5	28	.	.	PUNCT
sc-1149	6	1	c	c	X
sc-1149	6	2	-	-	PUNCT
sc-1149	6	3	abac	abac	ADJ
sc-1149	6	4	supports	support	VERB
sc-1149	6	5	the	the	DET
sc-1149	6	6	workflow	workflow	NOUN
sc-1149	6	7	concept	concept	NOUN
sc-1149	6	8	,	,	PUNCT
sc-1149	6	9	preserves	preserve	VERB
sc-1149	6	10	the	the	DET
sc-1149	6	11	tenants	tenant	NOUN
sc-1149	6	12	autonomy	autonomy	NOUN
sc-1149	6	13	in	in	ADP
sc-1149	6	14	defining	define	VERB
sc-1149	6	15	their	their	PRON
sc-1149	6	16	local	local	ADJ
sc-1149	6	17	policies	policy	NOUN
sc-1149	6	18	and	and	CCONJ
sc-1149	6	19	preserves	preserve	VERB
sc-1149	6	20	the	the	DET
sc-1149	6	21	confidentiality	confidentiality	NOUN
sc-1149	6	22	of	of	ADP
sc-1149	6	23	the	the	DET
sc-1149	6	24	object	object	NOUN
sc-1149	6	25	attributes	attribute	VERB
sc-1149	6	26	.	.	PUNCT
sc-1149	7	1	the	the	DET
sc-1149	7	2	implementation	implementation	NOUN
sc-1149	7	3	of	of	ADP
sc-1149	7	4	c	c	NOUN
sc-1149	7	5	-	-	PUNCT
sc-1149	7	6	abac	abac	ADJ
sc-1149	7	7	in	in	ADP
sc-1149	7	8	the	the	DET
sc-1149	7	9	swiftstack	swiftstack	NOUN
sc-1149	7	10	environment	environment	NOUN
sc-1149	7	11	demonstrates	demonstrate	VERB
sc-1149	7	12	the	the	DET
sc-1149	7	13	feasibility	feasibility	NOUN
sc-1149	7	14	of	of	ADP
sc-1149	7	15	the	the	DET
sc-1149	7	16	suggested	suggest	VERB
sc-1149	7	17	model	model	NOUN
sc-1149	7	18	.	.	PUNCT
sc-1149	8	1	received	receive	VERB
sc-1149	8	2	on	on	ADP
sc-1149	8	3	15	15	NUM
sc-1149	8	4	december	december	PROPN
sc-1149	8	5	2017	2017	NUM
sc-1149	8	6	;	;	PUNCT
sc-1149	8	7	accepted	accept	VERB
sc-1149	8	8	on	on	ADP
sc-1149	8	9	18	18	NUM
sc-1149	8	10	april	april	PROPN
sc-1149	8	11	2018	2018	NUM
sc-1149	8	12	;	;	PUNCT
sc-1149	8	13	published	publish	VERB
sc-1149	8	14	on	on	ADP
sc-1149	8	15	26	26	NUM
sc-1149	8	16	june	june	PROPN
sc-1149	8	17	2018	2018	NUM
sc-1149	8	18	keywords	keyword	NOUN
sc-1149	8	19	:	:	PUNCT
sc-1149	8	20	abac	abac	ADJ
sc-1149	8	21	model	model	NOUN
sc-1149	8	22	;	;	PUNCT
sc-1149	8	23	tasks	task	NOUN
sc-1149	8	24	;	;	PUNCT
sc-1149	8	25	collaborative	collaborative	ADJ
sc-1149	8	26	session	session	NOUN
sc-1149	8	27	;	;	PUNCT
sc-1149	8	28	access	access	NOUN
sc-1149	8	29	control	control	NOUN
sc-1149	8	30	.	.	PUNCT
sc-1149	9	1	copyright	copyright	NOUN
sc-1149	9	2	©	©	PROPN
sc-1149	9	3	2018	2018	NUM
sc-1149	9	4	mohamed	mohame	VERB
sc-1149	9	5	amine	amine	PROPN
sc-1149	9	6	madani	madani	PROPN
sc-1149	9	7	et	et	PROPN
sc-1149	9	8	al	al	PROPN
sc-1149	9	9	.	.	PROPN
sc-1149	9	10	,	,	PUNCT
sc-1149	9	11	licensed	license	VERB
sc-1149	9	12	to	to	ADP
sc-1149	9	13	eai	eai	PROPN
sc-1149	9	14	.	.	PUNCT
sc-1149	10	1	this	this	PRON
sc-1149	10	2	is	be	AUX
sc-1149	10	3	an	an	DET
sc-1149	10	4	open	open	ADJ
sc-1149	10	5	access	access	NOUN
sc-1149	10	6	article	article	NOUN
sc-1149	10	7	distributed	distribute	VERB
sc-1149	10	8	under	under	ADP
sc-1149	10	9	the	the	DET
sc-1149	10	10	terms	term	NOUN
sc-1149	10	11	of	of	ADP
sc-1149	10	12	the	the	DET
sc-1149	10	13	creative	creative	ADJ
sc-1149	10	14	commons	common	NOUN
sc-1149	10	15	attribution	attribution	NOUN
sc-1149	10	16	license	license	NOUN
sc-1149	10	17	(	(	PUNCT
sc-1149	10	18	http://creativecommons.org/licenses/by/3.0/	http://creativecommons.org/licenses/by/3.0/	PROPN
sc-1149	10	19	)	)	PUNCT
sc-1149	10	20	,	,	PUNCT
sc-1149	10	21	which	which	PRON
sc-1149	10	22	permits	permit	VERB
sc-1149	10	23	unlimited	unlimited	ADJ
sc-1149	10	24	use	use	NOUN
sc-1149	10	25	,	,	PUNCT
sc-1149	10	26	distribution	distribution	NOUN
sc-1149	10	27	and	and	CCONJ
sc-1149	10	28	reproduction	reproduction	NOUN
sc-1149	10	29	in	in	ADP
sc-1149	10	30	any	any	DET
sc-1149	10	31	medium	medium	NOUN
sc-1149	10	32	so	so	ADV
sc-1149	10	33	long	long	ADV
sc-1149	10	34	as	as	SCONJ
sc-1149	10	35	the	the	DET
sc-1149	10	36	original	original	ADJ
sc-1149	10	37	work	work	NOUN
sc-1149	10	38	is	be	AUX
sc-1149	10	39	properly	properly	ADV
sc-1149	10	40	cited	cite	VERB
sc-1149	10	41	.	.	PUNCT
sc-1149	11	1	doi:10.4108	doi:10.4108	VERB
sc-1149	11	2	/	/	SYM
sc-1149	11	3	eai.26	eai.26	ADJ
sc-1149	11	4	-	-	PUNCT
sc-1149	11	5	6	6	NUM
sc-1149	11	6	-	-	SYM
sc-1149	11	7	2018.154831	2018.154831	NUM
sc-1149	11	8	1	1	NUM
sc-1149	11	9	.	.	PUNCT
sc-1149	11	10	introduction	introduction	NOUN
sc-1149	11	11	nowadays	nowadays	ADV
sc-1149	11	12	,	,	PUNCT
sc-1149	11	13	multiple	multiple	ADJ
sc-1149	11	14	organizations	organization	NOUN
sc-1149	11	15	collaborate	collaborate	VERB
sc-1149	11	16	by	by	ADP
sc-1149	11	17	performing	perform	VERB
sc-1149	11	18	common	common	ADJ
sc-1149	11	19	tasks	task	NOUN
sc-1149	11	20	in	in	ADP
sc-1149	11	21	order	order	NOUN
sc-1149	11	22	to	to	PART
sc-1149	11	23	reach	reach	VERB
sc-1149	11	24	a	a	DET
sc-1149	11	25	common	common	ADJ
sc-1149	11	26	goal	goal	NOUN
sc-1149	11	27	.	.	PUNCT
sc-1149	12	1	such	such	ADJ
sc-1149	12	2	collaborations	collaboration	NOUN
sc-1149	12	3	optimize	optimize	VERB
sc-1149	12	4	the	the	DET
sc-1149	12	5	usage	usage	NOUN
sc-1149	12	6	of	of	ADP
sc-1149	12	7	the	the	DET
sc-1149	12	8	distributed	distribute	VERB
sc-1149	12	9	resources	resource	NOUN
sc-1149	12	10	of	of	ADP
sc-1149	12	11	the	the	DET
sc-1149	12	12	collaborators	collaborator	NOUN
sc-1149	12	13	,	,	PUNCT
sc-1149	12	14	hence	hence	ADV
sc-1149	12	15	,	,	PUNCT
sc-1149	12	16	the	the	DET
sc-1149	12	17	productivity	productivity	NOUN
sc-1149	12	18	and	and	CCONJ
sc-1149	12	19	the	the	DET
sc-1149	12	20	benefit	benefit	NOUN
sc-1149	12	21	improvements	improvement	NOUN
sc-1149	12	22	.	.	PUNCT
sc-1149	13	1	in	in	ADP
sc-1149	13	2	this	this	DET
sc-1149	13	3	context	context	NOUN
sc-1149	13	4	,	,	PUNCT
sc-1149	13	5	collaborative	collaborative	ADJ
sc-1149	13	6	applications	application	NOUN
sc-1149	13	7	bring	bring	VERB
sc-1149	13	8	new	new	ADJ
sc-1149	13	9	solutions	solution	NOUN
sc-1149	13	10	and	and	CCONJ
sc-1149	13	11	technologies	technology	NOUN
sc-1149	13	12	to	to	PART
sc-1149	13	13	enable	enable	VERB
sc-1149	13	14	a	a	DET
sc-1149	13	15	group	group	NOUN
sc-1149	13	16	of	of	ADP
sc-1149	13	17	users	user	NOUN
sc-1149	13	18	to	to	PART
sc-1149	13	19	communicate	communicate	VERB
sc-1149	13	20	,	,	PUNCT
sc-1149	13	21	cooperate	cooperate	VERB
sc-1149	13	22	and	and	CCONJ
sc-1149	13	23	collaborate	collaborate	VERB
sc-1149	13	24	through	through	ADP
sc-1149	13	25	distributed	distribute	VERB
sc-1149	13	26	platforms	platform	NOUN
sc-1149	13	27	to	to	PART
sc-1149	13	28	perform	perform	VERB
sc-1149	13	29	common	common	ADJ
sc-1149	13	30	tasks	task	NOUN
sc-1149	13	31	.	.	PUNCT
sc-1149	14	1	most	most	ADJ
sc-1149	14	2	organizations	organization	NOUN
sc-1149	14	3	rely	rely	VERB
sc-1149	14	4	on	on	ADP
sc-1149	14	5	cloud	cloud	NOUN
sc-1149	14	6	-	-	PUNCT
sc-1149	14	7	based	base	VERB
sc-1149	14	8	solutions	solution	NOUN
sc-1149	14	9	to	to	PART
sc-1149	14	10	outsource	outsource	VERB
sc-1149	14	11	their	their	PRON
sc-1149	14	12	it	it	PRON
sc-1149	14	13	infrastructure	infrastructure	NOUN
sc-1149	14	14	such	such	ADJ
sc-1149	14	15	as	as	ADP
sc-1149	14	16	compute	compute	NOUN
sc-1149	14	17	,	,	PUNCT
sc-1149	14	18	network	network	NOUN
sc-1149	14	19	and	and	CCONJ
sc-1149	14	20	data	datum	NOUN
sc-1149	14	21	storage	storage	NOUN
sc-1149	14	22	in	in	ADP
sc-1149	14	23	a	a	DET
sc-1149	14	24	cloud	cloud	ADJ
sc-1149	14	25	service	service	NOUN
sc-1149	14	26	provider	provider	NOUN
sc-1149	14	27	(	(	PUNCT
sc-1149	14	28	csp	csp	PROPN
sc-1149	14	29	)	)	PUNCT
sc-1149	14	30	.	.	PUNCT
sc-1149	15	1	this	this	PRON
sc-1149	15	2	provides	provide	VERB
sc-1149	15	3	remote	remote	ADJ
sc-1149	15	4	access	access	NOUN
sc-1149	15	5	to	to	ADP
sc-1149	15	6	software	software	NOUN
sc-1149	15	7	and	and	CCONJ
sc-1149	15	8	hardware	hardware	NOUN
sc-1149	15	9	services	service	NOUN
sc-1149	15	10	via	via	ADP
sc-1149	15	11	internet	internet	NOUN
sc-1149	15	12	.	.	PUNCT
sc-1149	16	1	in	in	ADP
sc-1149	16	2	order	order	NOUN
sc-1149	16	3	to	to	PART
sc-1149	16	4	ensure	ensure	VERB
sc-1149	16	5	the	the	DET
sc-1149	16	6	confidentiality	confidentiality	NOUN
sc-1149	16	7	and	and	CCONJ
sc-1149	16	8	the	the	DET
sc-1149	16	9	privacy	privacy	NOUN
sc-1149	16	10	of	of	ADP
sc-1149	16	11	these	these	DET
sc-1149	16	12	services	service	NOUN
sc-1149	16	13	,	,	PUNCT
sc-1149	16	14	the	the	DET
sc-1149	16	15	cloud	cloud	NOUN
sc-1149	16	16	service	service	NOUN
sc-1149	16	17	provider	provider	NOUN
sc-1149	16	18	segregates	segregate	VERB
sc-1149	16	19	the	the	DET
sc-1149	16	20	data	datum	NOUN
sc-1149	16	21	and	and	CCONJ
sc-1149	16	22	customers	customer	NOUN
sc-1149	16	23	services	service	NOUN
sc-1149	16	24	into	into	ADP
sc-1149	16	25	multiple	multiple	ADJ
sc-1149	16	26	tenants	tenant	NOUN
sc-1149	16	27	.	.	PUNCT
sc-1149	17	1	each	each	DET
sc-1149	17	2	tenant	tenant	NOUN
sc-1149	17	3	hplease	hplease	NOUN
sc-1149	17	4	ensure	ensure	VERB
sc-1149	17	5	that	that	SCONJ
sc-1149	17	6	you	you	PRON
sc-1149	17	7	use	use	VERB
sc-1149	17	8	the	the	DET
sc-1149	17	9	most	most	ADJ
sc-1149	17	10	up	up	ADP
sc-1149	17	11	to	to	ADP
sc-1149	17	12	date	date	NOUN
sc-1149	17	13	class	class	NOUN
sc-1149	17	14	file	file	NOUN
sc-1149	17	15	,	,	PUNCT
sc-1149	17	16	available	available	ADJ
sc-1149	17	17	from	from	ADP
sc-1149	17	18	eai	eai	PROPN
sc-1149	17	19	at	at	ADP
sc-1149	17	20	http://doc.eai.eu/publications/transactions/	http://doc.eai.eu/publications/transactions/	PROPN
sc-1149	17	21	latex/	latex/	NUM
sc-1149	17	22	∗corresponding	∗corresponde	VERB
sc-1149	17	23	author	author	NOUN
sc-1149	17	24	.	.	PUNCT
sc-1149	18	1	email	email	NOUN
sc-1149	18	2	:	:	PUNCT
sc-1149	18	3	amine.madani@um5s.net.ma	amine.madani@um5s.net.ma	PROPN
sc-1149	18	4	is	be	AUX
sc-1149	18	5	assigned	assign	VERB
sc-1149	18	6	to	to	ADP
sc-1149	18	7	an	an	DET
sc-1149	18	8	organization	organization	NOUN
sc-1149	18	9	or	or	CCONJ
sc-1149	18	10	to	to	ADP
sc-1149	18	11	a	a	DET
sc-1149	18	12	person	person	NOUN
sc-1149	18	13	that	that	PRON
sc-1149	18	14	uses	use	VERB
sc-1149	18	15	a	a	DET
sc-1149	18	16	given	give	VERB
sc-1149	18	17	cloud	cloud	NOUN
sc-1149	18	18	service	service	NOUN
sc-1149	18	19	.	.	PUNCT
sc-1149	19	1	during	during	ADP
sc-1149	19	2	collaborations	collaboration	NOUN
sc-1149	19	3	,	,	PUNCT
sc-1149	19	4	the	the	DET
sc-1149	19	5	cloud	cloud	ADJ
sc-1149	19	6	tenants	tenant	NOUN
sc-1149	19	7	need	need	VERB
sc-1149	19	8	to	to	PART
sc-1149	19	9	access	access	VERB
sc-1149	19	10	and	and	CCONJ
sc-1149	19	11	use	use	VERB
sc-1149	19	12	the	the	DET
sc-1149	19	13	information	information	NOUN
sc-1149	19	14	shared	share	VERB
sc-1149	19	15	by	by	ADP
sc-1149	19	16	other	other	ADJ
sc-1149	19	17	collaborating	collaborate	VERB
sc-1149	19	18	tenants	tenant	NOUN
sc-1149	19	19	.	.	PUNCT
sc-1149	20	1	this	this	DET
sc-1149	20	2	information	information	NOUN
sc-1149	20	3	often	often	ADV
sc-1149	20	4	contains	contain	VERB
sc-1149	20	5	sensitive	sensitive	ADJ
sc-1149	20	6	data	datum	NOUN
sc-1149	20	7	.	.	PUNCT
sc-1149	21	1	it	it	PRON
sc-1149	21	2	is	be	AUX
sc-1149	21	3	meant	mean	VERB
sc-1149	21	4	to	to	PART
sc-1149	21	5	be	be	AUX
sc-1149	21	6	shared	share	VERB
sc-1149	21	7	only	only	ADV
sc-1149	21	8	during	during	ADP
sc-1149	21	9	specific	specific	ADJ
sc-1149	21	10	collaborative	collaborative	ADJ
sc-1149	21	11	sessions	session	NOUN
sc-1149	21	12	[	[	X
sc-1149	21	13	5	5	NUM
sc-1149	21	14	]	]	PUNCT
sc-1149	21	15	.	.	PUNCT
sc-1149	22	1	this	this	PRON
sc-1149	22	2	arises	arise	VERB
sc-1149	22	3	the	the	DET
sc-1149	22	4	access	access	NOUN
sc-1149	22	5	control	control	NOUN
sc-1149	22	6	issue	issue	NOUN
sc-1149	22	7	[	[	X
sc-1149	22	8	4	4	NUM
sc-1149	22	9	]	]	PUNCT
sc-1149	22	10	:	:	PUNCT
sc-1149	22	11	the	the	DET
sc-1149	22	12	tenants	tenant	NOUN
sc-1149	22	13	need	need	VERB
sc-1149	22	14	strong	strong	ADJ
sc-1149	22	15	access	access	NOUN
sc-1149	22	16	control	control	NOUN
sc-1149	22	17	model	model	NOUN
sc-1149	22	18	supporting	support	VERB
sc-1149	22	19	cross	cross	NOUN
sc-1149	22	20	tenants	tenant	NOUN
sc-1149	22	21	access	access	NOUN
sc-1149	22	22	and	and	CCONJ
sc-1149	22	23	collaboration	collaboration	NOUN
sc-1149	22	24	.	.	PUNCT
sc-1149	23	1	moreover	moreover	ADV
sc-1149	23	2	,	,	PUNCT
sc-1149	23	3	users	user	NOUN
sc-1149	23	4	may	may	AUX
sc-1149	23	5	intervene	intervene	VERB
sc-1149	23	6	dynamically	dynamically	ADV
sc-1149	23	7	without	without	ADP
sc-1149	23	8	a	a	DET
sc-1149	23	9	prior	prior	ADJ
sc-1149	23	10	knowledge	knowledge	NOUN
sc-1149	23	11	of	of	ADP
sc-1149	23	12	which	which	PRON
sc-1149	23	13	user	user	NOUN
sc-1149	23	14	will	will	AUX
sc-1149	23	15	request	request	VERB
sc-1149	23	16	an	an	DET
sc-1149	23	17	access	access	NOUN
sc-1149	23	18	to	to	ADP
sc-1149	23	19	a	a	DET
sc-1149	23	20	given	give	VERB
sc-1149	23	21	object	object	NOUN
sc-1149	23	22	.	.	PUNCT
sc-1149	24	1	in	in	ADP
sc-1149	24	2	this	this	DET
sc-1149	24	3	direction	direction	NOUN
sc-1149	24	4	,	,	PUNCT
sc-1149	24	5	designing	design	VERB
sc-1149	24	6	a	a	DET
sc-1149	24	7	fine	fine	ADV
sc-1149	24	8	-	-	PUNCT
sc-1149	24	9	grained	grain	VERB
sc-1149	24	10	access	access	NOUN
sc-1149	24	11	control	control	NOUN
sc-1149	24	12	model	model	NOUN
sc-1149	24	13	is	be	AUX
sc-1149	24	14	mandatory	mandatory	ADJ
sc-1149	24	15	[	[	X
sc-1149	24	16	5	5	NUM
sc-1149	24	17	]	]	PUNCT
sc-1149	24	18	.	.	PUNCT
sc-1149	25	1	note	note	VERB
sc-1149	25	2	that	that	SCONJ
sc-1149	25	3	a	a	DET
sc-1149	25	4	collaboration	collaboration	NOUN
sc-1149	25	5	might	might	AUX
sc-1149	25	6	be	be	AUX
sc-1149	25	7	seen	see	VERB
sc-1149	25	8	as	as	ADP
sc-1149	25	9	a	a	DET
sc-1149	25	10	set	set	NOUN
sc-1149	25	11	of	of	ADP
sc-1149	25	12	tasks	task	NOUN
sc-1149	25	13	and	and	CCONJ
sc-1149	25	14	workflows	workflow	NOUN
sc-1149	25	15	.	.	PUNCT
sc-1149	26	1	each	each	DET
sc-1149	26	2	task	task	NOUN
sc-1149	26	3	is	be	AUX
sc-1149	26	4	performed	perform	VERB
sc-1149	26	5	by	by	ADP
sc-1149	26	6	a	a	DET
sc-1149	26	7	given	give	VERB
sc-1149	26	8	tenant	tenant	NOUN
sc-1149	26	9	and	and	CCONJ
sc-1149	26	10	a	a	DET
sc-1149	26	11	tenant	tenant	NOUN
sc-1149	26	12	may	may	AUX
sc-1149	26	13	achieve	achieve	VERB
sc-1149	26	14	one	one	NUM
sc-1149	26	15	or	or	CCONJ
sc-1149	26	16	more	more	ADJ
sc-1149	26	17	tasks	task	NOUN
sc-1149	26	18	.	.	PUNCT
sc-1149	27	1	a	a	DET
sc-1149	27	2	task	task	NOUN
sc-1149	27	3	might	might	AUX
sc-1149	27	4	be	be	AUX
sc-1149	27	5	active	active	ADJ
sc-1149	27	6	(	(	PUNCT
sc-1149	27	7	i.e.	i.e.	X
sc-1149	27	8	a	a	DET
sc-1149	27	9	part	part	NOUN
sc-1149	27	10	of	of	ADP
sc-1149	27	11	a	a	DET
sc-1149	27	12	workflow	workflow	NOUN
sc-1149	27	13	)	)	PUNCT
sc-1149	27	14	or	or	CCONJ
sc-1149	27	15	passive	passive	ADJ
sc-1149	27	16	(	(	PUNCT
sc-1149	27	17	i.e.	i.e.	X
sc-1149	27	18	does	do	AUX
sc-1149	27	19	not	not	PART
sc-1149	27	20	belong	belong	VERB
sc-1149	27	21	to	to	ADP
sc-1149	27	22	a	a	DET
sc-1149	27	23	workflow	workflow	NOUN
sc-1149	27	24	)	)	PUNCT
sc-1149	27	25	.	.	PUNCT
sc-1149	28	1	on	on	ADP
sc-1149	28	2	the	the	DET
sc-1149	28	3	other	other	ADJ
sc-1149	28	4	hand	hand	NOUN
sc-1149	28	5	,	,	PUNCT
sc-1149	28	6	access	access	NOUN
sc-1149	28	7	control	control	NOUN
sc-1149	28	8	models	model	NOUN
sc-1149	28	9	for	for	ADP
sc-1149	28	10	collaborations	collaboration	NOUN
sc-1149	28	11	in	in	ADP
sc-1149	28	12	multi	multi	ADJ
sc-1149	28	13	-	-	ADJ
sc-1149	28	14	tenant	tenant	ADJ
sc-1149	28	15	environments	environment	NOUN
sc-1149	28	16	might	might	AUX
sc-1149	28	17	be	be	AUX
sc-1149	28	18	classified	classify	VERB
sc-1149	28	19	into	into	ADP
sc-1149	28	20	two	two	NUM
sc-1149	28	21	categories	category	NOUN
sc-1149	28	22	:	:	PUNCT
sc-1149	28	23	centralized	centralized	ADJ
sc-1149	28	24	and	and	CCONJ
sc-1149	28	25	decentralized	decentralize	VERB
sc-1149	28	26	(	(	PUNCT
sc-1149	28	27	peer	peer	NOUN
sc-1149	28	28	to	to	PART
sc-1149	28	29	peer	peer	NOUN
sc-1149	28	30	)	)	PUNCT
sc-1149	28	31	access	access	NOUN
sc-1149	28	32	control	control	NOUN
sc-1149	28	33	models	model	NOUN
sc-1149	28	34	.	.	PUNCT
sc-1149	29	1	in	in	ADP
sc-1149	29	2	centralized	centralized	ADJ
sc-1149	29	3	approaches	approach	NOUN
sc-1149	29	4	,	,	PUNCT
sc-1149	29	5	the	the	DET
sc-1149	29	6	access	access	NOUN
sc-1149	29	7	enforcement	enforcement	NOUN
sc-1149	29	8	and	and	CCONJ
sc-1149	29	9	decisions	decision	NOUN
sc-1149	29	10	are	be	AUX
sc-1149	29	11	taken	take	VERB
sc-1149	29	12	in	in	ADP
sc-1149	29	13	a	a	DET
sc-1149	29	14	1	1	NUM
sc-1149	29	15	eai	eai	NOUN
sc-1149	29	16	endorsed	endorse	VERB
sc-1149	29	17	transactions	transaction	NOUN
sc-1149	29	18	on	on	ADP
sc-1149	29	19	smart	smart	ADJ
sc-1149	29	20	cities	city	NOUN
sc-1149	29	21	research	research	NOUN
sc-1149	29	22	article	article	NOUN
sc-1149	29	23	eai	eai	PROPN
sc-1149	29	24	endorsed	endorse	VERB
sc-1149	29	25	transactions	transaction	NOUN
sc-1149	29	26	on	on	ADP
sc-1149	29	27	smart	smart	ADJ
sc-1149	29	28	cities	city	NOUN
sc-1149	29	29	02	02	NUM
sc-1149	29	30	2018	2018	NUM
sc-1149	29	31	06	06	NUM
sc-1149	29	32	2018	2018	NUM
sc-1149	29	33	|	|	ADV
sc-1149	29	34	volume	volume	NOUN
sc-1149	29	35	2	2	NUM
sc-1149	29	36	|	|	ADV
sc-1149	29	37	issue	issue	VERB
sc-1149	29	38	8	8	NUM
sc-1149	29	39	|	|	ADV
sc-1149	29	40	e3	e3	VERB
sc-1149	29	41	http://creativecommons.org/licenses/by/3.0/	http://creativecommons.org/licenses/by/3.0/	PROPN
sc-1149	29	42	http://doc.eai.eu/publications/transactions/latex/	http://doc.eai.eu/publications/transactions/latex/	PROPN
sc-1149	29	43	http://doc.eai.eu/publications/transactions/latex/	http://doc.eai.eu/publications/transactions/latex/	PROPN
sc-1149	29	44	mailto:<publications@eai.eu	mailto:<publications@eai.eu	PROPN
sc-1149	29	45	>	>	X
sc-1149	29	46	m.	m.	NOUN
sc-1149	29	47	madani	madani	PROPN
sc-1149	29	48	,	,	PUNCT
sc-1149	29	49	m.	m.	NOUN
sc-1149	29	50	erradi	erradi	PROPN
sc-1149	29	51	,	,	PUNCT
sc-1149	29	52	y.	y.	PROPN
sc-1149	29	53	benkaouz	benkaouz	VERB
sc-1149	29	54	specific	specific	ADJ
sc-1149	29	55	central	central	ADJ
sc-1149	29	56	point	point	NOUN
sc-1149	29	57	.	.	PUNCT
sc-1149	30	1	these	these	DET
sc-1149	30	2	models	model	NOUN
sc-1149	30	3	enable	enable	VERB
sc-1149	30	4	granting	grant	VERB
sc-1149	30	5	and	and	CCONJ
sc-1149	30	6	revoking	revoke	VERB
sc-1149	30	7	permissions	permission	NOUN
sc-1149	30	8	while	while	SCONJ
sc-1149	30	9	a	a	DET
sc-1149	30	10	task	task	NOUN
sc-1149	30	11	is	be	AUX
sc-1149	30	12	running	run	VERB
sc-1149	30	13	.	.	PUNCT
sc-1149	31	1	in	in	ADP
sc-1149	31	2	decentralized	decentralize	VERB
sc-1149	31	3	approaches	approach	NOUN
sc-1149	31	4	,	,	PUNCT
sc-1149	31	5	each	each	DET
sc-1149	31	6	tenant	tenant	NOUN
sc-1149	31	7	is	be	AUX
sc-1149	31	8	responsible	responsible	ADJ
sc-1149	31	9	of	of	ADP
sc-1149	31	10	its	its	PRON
sc-1149	31	11	own	own	ADJ
sc-1149	31	12	access	access	NOUN
sc-1149	31	13	control	control	NOUN
sc-1149	31	14	policy	policy	NOUN
sc-1149	31	15	.	.	PUNCT
sc-1149	32	1	in	in	ADP
sc-1149	32	2	this	this	DET
sc-1149	32	3	respect	respect	NOUN
sc-1149	32	4	,	,	PUNCT
sc-1149	32	5	tenants	tenant	NOUN
sc-1149	32	6	are	be	AUX
sc-1149	32	7	loosely	loosely	ADV
sc-1149	32	8	coupled	couple	VERB
sc-1149	32	9	.	.	PUNCT
sc-1149	33	1	such	such	ADJ
sc-1149	33	2	approaches	approach	NOUN
sc-1149	33	3	could	could	AUX
sc-1149	33	4	support	support	VERB
sc-1149	33	5	the	the	DET
sc-1149	33	6	following	follow	VERB
sc-1149	33	7	requirements	requirement	NOUN
sc-1149	33	8	:	:	PUNCT
sc-1149	33	9	•	•	NUM
sc-1149	33	10	autonomy	autonomy	NOUN
sc-1149	33	11	and	and	CCONJ
sc-1149	33	12	independence	independence	NOUN
sc-1149	33	13	:	:	PUNCT
sc-1149	33	14	each	each	DET
sc-1149	33	15	tenant	tenant	NOUN
sc-1149	33	16	maintains	maintain	VERB
sc-1149	33	17	control	control	NOUN
sc-1149	33	18	over	over	ADP
sc-1149	33	19	its	its	PRON
sc-1149	33	20	resources	resource	NOUN
sc-1149	33	21	.	.	PUNCT
sc-1149	34	1	each	each	DET
sc-1149	34	2	tenant	tenant	NOUN
sc-1149	34	3	defines	define	VERB
sc-1149	34	4	its	its	PRON
sc-1149	34	5	local	local	ADJ
sc-1149	34	6	access	access	NOUN
sc-1149	34	7	control	control	NOUN
sc-1149	34	8	policy	policy	NOUN
sc-1149	34	9	and	and	CCONJ
sc-1149	34	10	respects	respect	VERB
sc-1149	34	11	the	the	DET
sc-1149	34	12	global	global	ADJ
sc-1149	34	13	access	access	PROPN
sc-1149	34	14	control	control	NOUN
sc-1149	34	15	policy	policy	NOUN
sc-1149	34	16	.	.	PUNCT
sc-1149	35	1	•	•	NUM
sc-1149	35	2	confidentiality	confidentiality	NOUN
sc-1149	35	3	:	:	PUNCT
sc-1149	35	4	each	each	DET
sc-1149	35	5	tenant	tenant	NOUN
sc-1149	35	6	is	be	AUX
sc-1149	35	7	be	be	AUX
sc-1149	35	8	able	able	ADJ
sc-1149	35	9	to	to	PART
sc-1149	35	10	maintain	maintain	VERB
sc-1149	35	11	the	the	DET
sc-1149	35	12	confidentiality	confidentiality	NOUN
sc-1149	35	13	and	and	CCONJ
sc-1149	35	14	the	the	DET
sc-1149	35	15	privacy	privacy	NOUN
sc-1149	35	16	of	of	ADP
sc-1149	35	17	its	its	PRON
sc-1149	35	18	local	local	ADJ
sc-1149	35	19	policy	policy	NOUN
sc-1149	35	20	and	and	CCONJ
sc-1149	35	21	its	its	PRON
sc-1149	35	22	own	own	ADJ
sc-1149	35	23	data	datum	NOUN
sc-1149	35	24	.	.	PUNCT
sc-1149	36	1	in	in	ADP
sc-1149	36	2	this	this	DET
sc-1149	36	3	paper	paper	NOUN
sc-1149	36	4	,	,	PUNCT
sc-1149	36	5	and	and	CCONJ
sc-1149	36	6	based	base	VERB
sc-1149	36	7	on	on	ADP
sc-1149	36	8	the	the	DET
sc-1149	36	9	fine	fine	ADV
sc-1149	36	10	-	-	PUNCT
sc-1149	36	11	grained	grain	VERB
sc-1149	36	12	access	access	NOUN
sc-1149	36	13	control	control	NOUN
sc-1149	36	14	model	model	NOUN
sc-1149	36	15	"	"	PUNCT
sc-1149	36	16	abac	abac	ADJ
sc-1149	36	17	:	:	PUNCT
sc-1149	36	18	attribute	attribute	NOUN
sc-1149	36	19	based	base	VERB
sc-1149	36	20	access	access	NOUN
sc-1149	36	21	control	control	NOUN
sc-1149	36	22	"	"	PUNCT
sc-1149	36	23	,	,	PUNCT
sc-1149	36	24	we	we	PRON
sc-1149	36	25	propose	propose	VERB
sc-1149	36	26	"	"	PUNCT
sc-1149	36	27	c	c	NOUN
sc-1149	36	28	-	-	PUNCT
sc-1149	36	29	abac	abac	ADJ
sc-1149	36	30	:	:	PUNCT
sc-1149	36	31	collaboration	collaboration	NOUN
sc-1149	36	32	abac	abac	NOUN
sc-1149	36	33	"	"	PUNCT
sc-1149	36	34	.	.	PUNCT
sc-1149	37	1	c	c	X
sc-1149	37	2	-	-	PUNCT
sc-1149	37	3	abac	abac	ADJ
sc-1149	37	4	is	be	AUX
sc-1149	37	5	especially	especially	ADV
sc-1149	37	6	designed	design	VERB
sc-1149	37	7	for	for	ADP
sc-1149	37	8	collaborations	collaboration	NOUN
sc-1149	37	9	in	in	ADP
sc-1149	37	10	multitenants	multitenant	NOUN
sc-1149	37	11	environments	environment	NOUN
sc-1149	37	12	.	.	PUNCT
sc-1149	38	1	c	c	X
sc-1149	38	2	-	-	PUNCT
sc-1149	38	3	abac	abac	ADJ
sc-1149	38	4	model	model	NOUN
sc-1149	38	5	overcomes	overcome	VERB
sc-1149	38	6	the	the	DET
sc-1149	38	7	limitations	limitation	NOUN
sc-1149	38	8	of	of	ADP
sc-1149	38	9	the	the	DET
sc-1149	38	10	classical	classical	ADJ
sc-1149	38	11	access	access	NOUN
sc-1149	38	12	control	control	NOUN
sc-1149	38	13	models	model	NOUN
sc-1149	38	14	that	that	PRON
sc-1149	38	15	are	be	AUX
sc-1149	38	16	based	base	VERB
sc-1149	38	17	on	on	ADP
sc-1149	38	18	rbac	rbac	PROPN
sc-1149	38	19	model	model	PROPN
sc-1149	38	20	.	.	PUNCT
sc-1149	39	1	it	it	PRON
sc-1149	39	2	supports	support	VERB
sc-1149	39	3	an	an	DET
sc-1149	39	4	access	access	NOUN
sc-1149	39	5	crosstenant	crosstenant	NOUN
sc-1149	39	6	in	in	ADP
sc-1149	39	7	which	which	PRON
sc-1149	39	8	a	a	DET
sc-1149	39	9	tenant	tenant	NOUN
sc-1149	39	10	could	could	AUX
sc-1149	39	11	use	use	VERB
sc-1149	39	12	shared	share	VERB
sc-1149	39	13	ressources	ressource	NOUN
sc-1149	39	14	on	on	ADP
sc-1149	39	15	the	the	DET
sc-1149	39	16	cloud	cloud	NOUN
sc-1149	39	17	while	while	SCONJ
sc-1149	39	18	preserving	preserve	VERB
sc-1149	39	19	access	access	NOUN
sc-1149	39	20	control	control	NOUN
sc-1149	39	21	policies	policy	NOUN
sc-1149	39	22	.	.	PUNCT
sc-1149	40	1	the	the	DET
sc-1149	40	2	c	c	NOUN
sc-1149	40	3	-	-	PUNCT
sc-1149	40	4	abac	abac	ADJ
sc-1149	40	5	model	model	NOUN
sc-1149	40	6	is	be	AUX
sc-1149	40	7	a	a	DET
sc-1149	40	8	centralized	centralized	ADJ
sc-1149	40	9	model	model	NOUN
sc-1149	40	10	that	that	PRON
sc-1149	40	11	allows	allow	VERB
sc-1149	40	12	the	the	DET
sc-1149	40	13	collaborating	collaborate	VERB
sc-1149	40	14	tenants	tenant	NOUN
sc-1149	40	15	to	to	PART
sc-1149	40	16	specify	specify	VERB
sc-1149	40	17	a	a	DET
sc-1149	40	18	global	global	ADJ
sc-1149	40	19	policy	policy	NOUN
sc-1149	40	20	(	(	PUNCT
sc-1149	40	21	authorizations	authorization	NOUN
sc-1149	40	22	)	)	PUNCT
sc-1149	40	23	in	in	ADP
sc-1149	40	24	a	a	DET
sc-1149	40	25	specific	specific	ADJ
sc-1149	40	26	central	central	ADJ
sc-1149	40	27	point	point	NOUN
sc-1149	40	28	.	.	PUNCT
sc-1149	41	1	c	c	X
sc-1149	41	2	-	-	PUNCT
sc-1149	41	3	abac	abac	ADJ
sc-1149	41	4	supports	support	VERB
sc-1149	41	5	the	the	DET
sc-1149	41	6	task	task	NOUN
sc-1149	41	7	and	and	CCONJ
sc-1149	41	8	the	the	DET
sc-1149	41	9	workflow	workflow	NOUN
sc-1149	41	10	concepts	concept	NOUN
sc-1149	41	11	.	.	PUNCT
sc-1149	42	1	it	it	PRON
sc-1149	42	2	is	be	AUX
sc-1149	42	3	scalable	scalable	ADJ
sc-1149	42	4	and	and	CCONJ
sc-1149	42	5	preserves	preserve	VERB
sc-1149	42	6	the	the	DET
sc-1149	42	7	autonomy	autonomy	NOUN
sc-1149	42	8	of	of	ADP
sc-1149	42	9	each	each	DET
sc-1149	42	10	tenant	tenant	NOUN
sc-1149	42	11	in	in	ADP
sc-1149	42	12	defining	define	VERB
sc-1149	42	13	their	their	PRON
sc-1149	42	14	policies	policy	NOUN
sc-1149	42	15	.	.	PUNCT
sc-1149	43	1	in	in	ADP
sc-1149	43	2	addition	addition	NOUN
sc-1149	43	3	,	,	PUNCT
sc-1149	43	4	it	it	PRON
sc-1149	43	5	preserves	preserve	VERB
sc-1149	43	6	the	the	DET
sc-1149	43	7	confidentiality	confidentiality	NOUN
sc-1149	43	8	of	of	ADP
sc-1149	43	9	the	the	DET
sc-1149	43	10	object	object	NOUN
sc-1149	43	11	,	,	PUNCT
sc-1149	43	12	resource	resource	NOUN
sc-1149	43	13	and	and	CCONJ
sc-1149	43	14	environment	environment	NOUN
sc-1149	43	15	attributes	attribute	NOUN
sc-1149	43	16	that	that	PRON
sc-1149	43	17	are	be	AUX
sc-1149	43	18	used	use	VERB
sc-1149	43	19	in	in	ADP
sc-1149	43	20	the	the	DET
sc-1149	43	21	access	access	NOUN
sc-1149	43	22	decision	decision	NOUN
sc-1149	43	23	process	process	NOUN
sc-1149	43	24	.	.	PUNCT
sc-1149	44	1	this	this	DET
sc-1149	44	2	paper	paper	NOUN
sc-1149	44	3	is	be	AUX
sc-1149	44	4	organized	organize	VERB
sc-1149	44	5	as	as	SCONJ
sc-1149	44	6	follows	follow	VERB
sc-1149	44	7	:	:	PUNCT
sc-1149	44	8	section	section	NOUN
sc-1149	44	9	2	2	NUM
sc-1149	44	10	presents	present	VERB
sc-1149	44	11	the	the	DET
sc-1149	44	12	background	background	NOUN
sc-1149	44	13	of	of	ADP
sc-1149	44	14	this	this	DET
sc-1149	44	15	work	work	NOUN
sc-1149	44	16	,	,	PUNCT
sc-1149	44	17	in	in	ADP
sc-1149	44	18	which	which	PRON
sc-1149	44	19	,	,	PUNCT
sc-1149	44	20	the	the	DET
sc-1149	44	21	concepts	concept	NOUN
sc-1149	44	22	of	of	ADP
sc-1149	44	23	cloud	cloud	NOUN
sc-1149	44	24	-	-	PUNCT
sc-1149	44	25	based	base	VERB
sc-1149	44	26	collaborative	collaborative	ADJ
sc-1149	44	27	applications	application	NOUN
sc-1149	44	28	and	and	CCONJ
sc-1149	44	29	the	the	DET
sc-1149	44	30	abac	abac	ADJ
sc-1149	44	31	model	model	NOUN
sc-1149	44	32	are	be	AUX
sc-1149	44	33	explained	explain	VERB
sc-1149	44	34	.	.	PUNCT
sc-1149	45	1	the	the	DET
sc-1149	45	2	related	related	ADJ
sc-1149	45	3	work	work	NOUN
sc-1149	45	4	are	be	AUX
sc-1149	45	5	presented	present	VERB
sc-1149	45	6	in	in	ADP
sc-1149	45	7	section	section	NOUN
sc-1149	45	8	3	3	NUM
sc-1149	45	9	.	.	PUNCT
sc-1149	45	10	section	section	NOUN
sc-1149	45	11	4	4	NUM
sc-1149	45	12	describes	describe	VERB
sc-1149	45	13	the	the	DET
sc-1149	45	14	suggested	suggest	VERB
sc-1149	45	15	cabac	cabac	PROPN
sc-1149	45	16	model	model	PROPN
sc-1149	45	17	.	.	PUNCT
sc-1149	46	1	section	section	NOUN
sc-1149	46	2	5	5	NUM
sc-1149	46	3	presents	present	VERB
sc-1149	46	4	the	the	DET
sc-1149	46	5	implemented	implement	VERB
sc-1149	46	6	architecture	architecture	NOUN
sc-1149	46	7	,	,	PUNCT
sc-1149	46	8	the	the	DET
sc-1149	46	9	enforcement	enforcement	NOUN
sc-1149	46	10	model	model	NOUN
sc-1149	46	11	and	and	CCONJ
sc-1149	46	12	discusses	discuss	VERB
sc-1149	46	13	the	the	DET
sc-1149	46	14	evaluation	evaluation	NOUN
sc-1149	46	15	results	result	NOUN
sc-1149	46	16	.	.	PUNCT
sc-1149	47	1	finally	finally	ADV
sc-1149	47	2	,	,	PUNCT
sc-1149	47	3	we	we	PRON
sc-1149	47	4	conclude	conclude	VERB
sc-1149	47	5	in	in	ADP
sc-1149	47	6	section	section	NOUN
sc-1149	47	7	6	6	NUM
sc-1149	47	8	.	.	NOUN
sc-1149	47	9	2	2	NUM
sc-1149	47	10	.	.	X
sc-1149	47	11	background	background	NOUN
sc-1149	47	12	this	this	DET
sc-1149	47	13	section	section	NOUN
sc-1149	47	14	aims	aim	VERB
sc-1149	47	15	to	to	PART
sc-1149	47	16	present	present	VERB
sc-1149	47	17	the	the	DET
sc-1149	47	18	necessary	necessary	ADJ
sc-1149	47	19	background	background	NOUN
sc-1149	47	20	of	of	ADP
sc-1149	47	21	this	this	DET
sc-1149	47	22	work	work	NOUN
sc-1149	47	23	.	.	PUNCT
sc-1149	48	1	it	it	PRON
sc-1149	48	2	mainly	mainly	ADV
sc-1149	48	3	focus	focus	VERB
sc-1149	48	4	on	on	ADP
sc-1149	48	5	the	the	DET
sc-1149	48	6	presentation	presentation	NOUN
sc-1149	48	7	of	of	ADP
sc-1149	48	8	the	the	DET
sc-1149	48	9	concept	concept	NOUN
sc-1149	48	10	of	of	ADP
sc-1149	48	11	cloud	cloud	NOUN
sc-1149	48	12	based	base	VERB
sc-1149	48	13	collaborative	collaborative	ADJ
sc-1149	48	14	application	application	NOUN
sc-1149	48	15	.	.	PUNCT
sc-1149	49	1	then	then	ADV
sc-1149	49	2	,	,	PUNCT
sc-1149	49	3	it	it	PRON
sc-1149	49	4	presents	present	VERB
sc-1149	49	5	the	the	DET
sc-1149	49	6	attribute	attribute	NOUN
sc-1149	49	7	based	base	VERB
sc-1149	49	8	access	access	NOUN
sc-1149	49	9	control	control	NOUN
sc-1149	49	10	model	model	PROPN
sc-1149	49	11	.	.	PUNCT
sc-1149	50	1	cloud	cloud	PROPN
sc-1149	50	2	based	base	VERB
sc-1149	50	3	collaborative	collaborative	ADJ
sc-1149	50	4	applications	application	NOUN
sc-1149	50	5	.	.	PUNCT
sc-1149	51	1	collaborative	collaborative	ADJ
sc-1149	51	2	applications	application	NOUN
sc-1149	51	3	are	be	AUX
sc-1149	51	4	among	among	ADP
sc-1149	51	5	the	the	DET
sc-1149	51	6	services	service	NOUN
sc-1149	51	7	that	that	PRON
sc-1149	51	8	can	can	AUX
sc-1149	51	9	be	be	AUX
sc-1149	51	10	provided	provide	VERB
sc-1149	51	11	by	by	ADP
sc-1149	51	12	the	the	DET
sc-1149	51	13	cloud	cloud	PROPN
sc-1149	51	14	computing	computing	NOUN
sc-1149	51	15	.	.	PUNCT
sc-1149	52	1	they	they	PRON
sc-1149	52	2	enable	enable	VERB
sc-1149	52	3	collaboration	collaboration	NOUN
sc-1149	52	4	among	among	ADP
sc-1149	52	5	users	user	NOUN
sc-1149	52	6	from	from	ADP
sc-1149	52	7	the	the	DET
sc-1149	52	8	same	same	ADJ
sc-1149	52	9	or	or	CCONJ
sc-1149	52	10	different	different	ADJ
sc-1149	52	11	tenants	tenant	NOUN
sc-1149	52	12	of	of	ADP
sc-1149	52	13	a	a	DET
sc-1149	52	14	given	give	VERB
sc-1149	52	15	cloud	cloud	NOUN
sc-1149	52	16	provider	provider	NOUN
sc-1149	52	17	[	[	X
sc-1149	52	18	2	2	NUM
sc-1149	52	19	,	,	PUNCT
sc-1149	52	20	3	3	NUM
sc-1149	52	21	]	]	PUNCT
sc-1149	52	22	.	.	PUNCT
sc-1149	53	1	during	during	ADP
sc-1149	53	2	collaborations	collaboration	NOUN
sc-1149	53	3	,	,	PUNCT
sc-1149	53	4	the	the	DET
sc-1149	53	5	participants	participant	NOUN
sc-1149	53	6	need	need	VERB
sc-1149	53	7	to	to	PART
sc-1149	53	8	access	access	VERB
sc-1149	53	9	and	and	CCONJ
sc-1149	53	10	use	use	VERB
sc-1149	53	11	resources	resource	NOUN
sc-1149	53	12	held	hold	VERB
sc-1149	53	13	by	by	ADP
sc-1149	53	14	other	other	ADJ
sc-1149	53	15	collaborating	collaborate	VERB
sc-1149	53	16	users	user	NOUN
sc-1149	53	17	.	.	PUNCT
sc-1149	54	1	these	these	DET
sc-1149	54	2	resources	resource	NOUN
sc-1149	54	3	often	often	ADV
sc-1149	54	4	contain	contain	VERB
sc-1149	54	5	sensitive	sensitive	ADJ
sc-1149	54	6	data	datum	NOUN
sc-1149	54	7	.	.	PUNCT
sc-1149	55	1	they	they	PRON
sc-1149	55	2	are	be	AUX
sc-1149	55	3	meant	mean	VERB
sc-1149	55	4	to	to	PART
sc-1149	55	5	be	be	AUX
sc-1149	55	6	shared	share	VERB
sc-1149	55	7	only	only	ADV
sc-1149	55	8	during	during	ADP
sc-1149	55	9	specific	specific	ADJ
sc-1149	55	10	collaborative	collaborative	ADJ
sc-1149	55	11	session	session	NOUN
sc-1149	56	1	[	[	X
sc-1149	56	2	5	5	NUM
sc-1149	56	3	]	]	PUNCT
sc-1149	56	4	.	.	PUNCT
sc-1149	57	1	the	the	DET
sc-1149	57	2	collaborative	collaborative	ADJ
sc-1149	57	3	session	session	NOUN
sc-1149	57	4	is	be	AUX
sc-1149	57	5	an	an	DET
sc-1149	57	6	abstract	abstract	ADJ
sc-1149	57	7	entity	entity	NOUN
sc-1149	57	8	,	,	PUNCT
sc-1149	57	9	comprising	comprise	VERB
sc-1149	57	10	a	a	DET
sc-1149	57	11	set	set	NOUN
sc-1149	57	12	of	of	ADP
sc-1149	57	13	users	user	NOUN
sc-1149	57	14	,	,	PUNCT
sc-1149	57	15	called	call	VERB
sc-1149	57	16	members	member	NOUN
sc-1149	57	17	of	of	ADP
sc-1149	57	18	the	the	DET
sc-1149	57	19	session	session	NOUN
sc-1149	57	20	.	.	PUNCT
sc-1149	58	1	these	these	DET
sc-1149	58	2	members	member	NOUN
sc-1149	58	3	play	play	VERB
sc-1149	58	4	either	either	CCONJ
sc-1149	58	5	the	the	DET
sc-1149	58	6	same	same	ADJ
sc-1149	58	7	role	role	NOUN
sc-1149	58	8	or	or	CCONJ
sc-1149	58	9	different	different	ADJ
sc-1149	58	10	roles	role	NOUN
sc-1149	58	11	.	.	PUNCT
sc-1149	59	1	they	they	PRON
sc-1149	59	2	might	might	AUX
sc-1149	59	3	have	have	VERB
sc-1149	59	4	concurrent	concurrent	ADJ
sc-1149	59	5	access	access	NOUN
sc-1149	59	6	to	to	ADP
sc-1149	59	7	shared	share	VERB
sc-1149	59	8	objects	object	NOUN
sc-1149	59	9	in	in	ADP
sc-1149	59	10	the	the	DET
sc-1149	59	11	collaborative	collaborative	ADJ
sc-1149	59	12	session	session	NOUN
sc-1149	59	13	depending	depend	VERB
sc-1149	59	14	on	on	ADP
sc-1149	59	15	the	the	DET
sc-1149	59	16	access	access	NOUN
sc-1149	59	17	control	control	NOUN
sc-1149	59	18	policy	policy	NOUN
sc-1149	59	19	.	.	PUNCT
sc-1149	60	1	case	case	NOUN
sc-1149	60	2	study	study	NOUN
sc-1149	60	3	:	:	PUNCT
sc-1149	60	4	a	a	DET
sc-1149	60	5	collaborative	collaborative	ADJ
sc-1149	60	6	application	application	NOUN
sc-1149	60	7	for	for	ADP
sc-1149	60	8	telemedicine	telemedicine	NOUN
sc-1149	60	9	in	in	ADP
sc-1149	60	10	this	this	DET
sc-1149	60	11	study	study	NOUN
sc-1149	60	12	,	,	PUNCT
sc-1149	60	13	we	we	PRON
sc-1149	60	14	consider	consider	VERB
sc-1149	60	15	the	the	DET
sc-1149	60	16	telemedicine	telemedicine	NOUN
sc-1149	60	17	scenario	scenario	NOUN
sc-1149	60	18	shown	show	VERB
sc-1149	60	19	in	in	ADP
sc-1149	60	20	figure	figure	NOUN
sc-1149	60	21	1	1	NUM
sc-1149	60	22	.	.	PUNCT
sc-1149	61	1	in	in	ADP
sc-1149	61	2	this	this	DET
sc-1149	61	3	real	real	ADJ
sc-1149	61	4	use	use	NOUN
sc-1149	61	5	case	case	NOUN
sc-1149	61	6	,	,	PUNCT
sc-1149	61	7	the	the	DET
sc-1149	61	8	school	school	NOUN
sc-1149	61	9	hospital	hospital	NOUN
sc-1149	61	10	(	(	PUNCT
sc-1149	61	11	sh	sh	PROPN
sc-1149	61	12	)	)	PUNCT
sc-1149	61	13	,	,	PUNCT
sc-1149	61	14	the	the	DET
sc-1149	61	15	emergency	emergency	NOUN
sc-1149	61	16	medical	medical	ADJ
sc-1149	61	17	services	service	NOUN
sc-1149	61	18	(	(	PUNCT
sc-1149	61	19	ems	ems	PROPN
sc-1149	61	20	)	)	PUNCT
sc-1149	61	21	,	,	PUNCT
sc-1149	61	22	and	and	CCONJ
sc-1149	61	23	the	the	DET
sc-1149	61	24	home	home	NOUN
sc-1149	61	25	hospital	hospital	NOUN
sc-1149	61	26	(	(	PUNCT
sc-1149	61	27	hh	hh	PROPN
sc-1149	61	28	)	)	PUNCT
sc-1149	61	29	are	be	AUX
sc-1149	61	30	three	three	NUM
sc-1149	61	31	collaborating	collaborate	VERB
sc-1149	61	32	issuers	issuer	NOUN
sc-1149	61	33	sharing	share	VERB
sc-1149	61	34	a	a	DET
sc-1149	61	35	common	common	ADJ
sc-1149	61	36	private	private	ADJ
sc-1149	61	37	cloud	cloud	NOUN
sc-1149	61	38	service	service	NOUN
sc-1149	61	39	.	.	PUNCT
sc-1149	62	1	the	the	DET
sc-1149	62	2	cloud	cloud	PROPN
sc-1149	62	3	service	service	NOUN
sc-1149	62	4	provides	provide	VERB
sc-1149	62	5	storage	storage	NOUN
sc-1149	62	6	services	service	NOUN
sc-1149	62	7	for	for	ADP
sc-1149	62	8	the	the	DET
sc-1149	62	9	home	home	NOUN
sc-1149	62	10	hospital	hospital	NOUN
sc-1149	62	11	issuer	issuer	NOUN
sc-1149	62	12	,	,	PUNCT
sc-1149	62	13	and	and	CCONJ
sc-1149	62	14	for	for	ADP
sc-1149	62	15	the	the	DET
sc-1149	62	16	three	three	NUM
sc-1149	62	17	sh	sh	PROPN
sc-1149	62	18	’s	’s	PART
sc-1149	62	19	departments	department	NOUN
sc-1149	62	20	:	:	PUNCT
sc-1149	62	21	neurology	neurology	NOUN
sc-1149	62	22	,	,	PUNCT
sc-1149	62	23	radiology	radiology	NOUN
sc-1149	62	24	and	and	CCONJ
sc-1149	62	25	cardiology	cardiology	NOUN
sc-1149	62	26	,	,	PUNCT
sc-1149	62	27	as	as	ADP
sc-1149	62	28	segregated	segregated	ADJ
sc-1149	62	29	tenants	tenant	NOUN
sc-1149	62	30	.	.	PUNCT
sc-1149	63	1	this	this	DET
sc-1149	63	2	private	private	ADJ
sc-1149	63	3	cloud	cloud	NOUN
sc-1149	63	4	provides	provide	VERB
sc-1149	63	5	a	a	DET
sc-1149	63	6	service	service	NOUN
sc-1149	63	7	of	of	ADP
sc-1149	63	8	collaborative	collaborative	ADJ
sc-1149	63	9	sessions	session	NOUN
sc-1149	63	10	for	for	ADP
sc-1149	63	11	the	the	DET
sc-1149	63	12	emergency	emergency	NOUN
sc-1149	63	13	medical	medical	ADJ
sc-1149	63	14	services	service	NOUN
sc-1149	63	15	(	(	PUNCT
sc-1149	63	16	ems	ems	PROPN
sc-1149	63	17	)	)	PUNCT
sc-1149	63	18	.	.	PUNCT
sc-1149	64	1	this	this	DET
sc-1149	64	2	service	service	NOUN
sc-1149	64	3	allows	allow	VERB
sc-1149	64	4	a	a	DET
sc-1149	64	5	group	group	NOUN
sc-1149	64	6	of	of	ADP
sc-1149	64	7	users	user	NOUN
sc-1149	64	8	,	,	PUNCT
sc-1149	64	9	from	from	ADP
sc-1149	64	10	different	different	ADJ
sc-1149	64	11	tenants	tenant	NOUN
sc-1149	64	12	,	,	PUNCT
sc-1149	64	13	to	to	PART
sc-1149	64	14	collaborate	collaborate	VERB
sc-1149	64	15	in	in	ADP
sc-1149	64	16	order	order	NOUN
sc-1149	64	17	to	to	PART
sc-1149	64	18	observe	observe	VERB
sc-1149	64	19	and	and	CCONJ
sc-1149	64	20	treat	treat	VERB
sc-1149	64	21	a	a	DET
sc-1149	64	22	patient	patient	NOUN
sc-1149	64	23	admitted	admit	VERB
sc-1149	64	24	in	in	ADP
sc-1149	64	25	the	the	DET
sc-1149	64	26	home	home	NOUN
sc-1149	64	27	hospital	hospital	NOUN
sc-1149	64	28	(	(	PUNCT
sc-1149	64	29	hh	hh	NOUN
sc-1149	64	30	)	)	PUNCT
sc-1149	64	31	emergency	emergency	NOUN
sc-1149	64	32	.	.	PUNCT
sc-1149	65	1	in	in	ADP
sc-1149	65	2	this	this	DET
sc-1149	65	3	scenario	scenario	NOUN
sc-1149	65	4	,	,	PUNCT
sc-1149	65	5	we	we	PRON
sc-1149	65	6	have	have	VERB
sc-1149	65	7	a	a	DET
sc-1149	65	8	collaborative	collaborative	ADJ
sc-1149	65	9	session	session	NOUN
sc-1149	65	10	cs1	cs1	NOUN
sc-1149	65	11	of	of	ADP
sc-1149	65	12	a	a	DET
sc-1149	65	13	telemedicine	telemedicine	NOUN
sc-1149	65	14	type	type	NOUN
sc-1149	65	15	.	.	PUNCT
sc-1149	66	1	the	the	DET
sc-1149	66	2	members	member	NOUN
sc-1149	66	3	of	of	ADP
sc-1149	66	4	this	this	DET
sc-1149	66	5	session	session	NOUN
sc-1149	66	6	are	be	AUX
sc-1149	66	7	:	:	PUNCT
sc-1149	66	8	•	•	X
sc-1149	66	9	user1	user1	NOUN
sc-1149	66	10	:	:	PUNCT
sc-1149	66	11	neurologist	neurologist	NOUN
sc-1149	66	12	in	in	ADP
sc-1149	66	13	the	the	DET
sc-1149	66	14	tenant	tenant	NOUN
sc-1149	66	15	neuro	neuro	NOUN
sc-1149	66	16	of	of	ADP
sc-1149	66	17	the	the	DET
sc-1149	66	18	issuer	issuer	NOUN
sc-1149	66	19	sh	sh	PROPN
sc-1149	66	20	;	;	PUNCT
sc-1149	66	21	•	•	ADP
sc-1149	66	22	user2	user2	NOUN
sc-1149	66	23	:	:	PUNCT
sc-1149	66	24	cardiologist	cardiologist	NOUN
sc-1149	66	25	in	in	ADP
sc-1149	66	26	the	the	DET
sc-1149	66	27	tenant	tenant	NOUN
sc-1149	66	28	cardio	cardio	NOUN
sc-1149	66	29	of	of	ADP
sc-1149	66	30	the	the	DET
sc-1149	66	31	issuer	issuer	NOUN
sc-1149	66	32	sh	sh	PROPN
sc-1149	66	33	;	;	PUNCT
sc-1149	66	34	•	•	X
sc-1149	66	35	user3	user3	NOUN
sc-1149	66	36	:	:	PUNCT
sc-1149	66	37	radiologist	radiologist	NOUN
sc-1149	66	38	in	in	ADP
sc-1149	66	39	the	the	DET
sc-1149	66	40	tenant	tenant	NOUN
sc-1149	66	41	radio	radio	NOUN
sc-1149	66	42	of	of	ADP
sc-1149	66	43	the	the	DET
sc-1149	66	44	issuer	issuer	NOUN
sc-1149	66	45	sh	sh	PROPN
sc-1149	66	46	;	;	PUNCT
sc-1149	66	47	•	•	ADP
sc-1149	66	48	user4	user4	NOUN
sc-1149	66	49	:	:	PUNCT
sc-1149	66	50	doctor_ems	doctor_em	NOUN
sc-1149	66	51	(	(	PUNCT
sc-1149	66	52	emergency	emergency	NOUN
sc-1149	66	53	doctor	doctor	NOUN
sc-1149	66	54	)	)	PUNCT
sc-1149	66	55	in	in	ADP
sc-1149	66	56	the	the	DET
sc-1149	66	57	tenant	tenant	NOUN
sc-1149	66	58	emr	emr	PROPN
sc-1149	66	59	of	of	ADP
sc-1149	66	60	the	the	DET
sc-1149	66	61	issuer	issuer	ADJ
sc-1149	66	62	ems	ems	PROPN
sc-1149	66	63	;	;	PUNCT
sc-1149	66	64	•	•	ADP
sc-1149	66	65	user5	user5	NOUN
sc-1149	66	66	:	:	PUNCT
sc-1149	66	67	doctor_hh	doctor_hh	NOUN
sc-1149	66	68	in	in	ADP
sc-1149	66	69	the	the	DET
sc-1149	66	70	tenant	tenant	NOUN
sc-1149	66	71	storage	storage	NOUN
sc-1149	66	72	of	of	ADP
sc-1149	66	73	the	the	DET
sc-1149	66	74	tenant	tenant	NOUN
sc-1149	66	75	hh	hh	PROPN
sc-1149	66	76	.	.	PROPN
sc-1149	66	77	abacmodel	abacmodel	PROPN
sc-1149	66	78	.	.	PUNCT
sc-1149	67	1	abac	abac	PROPN
sc-1149	67	2	is	be	AUX
sc-1149	67	3	an	an	DET
sc-1149	67	4	adaptive	adaptive	NOUN
sc-1149	67	5	and	and	CCONJ
sc-1149	67	6	a	a	DET
sc-1149	67	7	flexible	flexible	ADJ
sc-1149	67	8	fine	fine	ADV
sc-1149	67	9	-	-	PUNCT
sc-1149	67	10	grained	grain	VERB
sc-1149	67	11	access	access	NOUN
sc-1149	67	12	control	control	NOUN
sc-1149	67	13	model	model	NOUN
sc-1149	67	14	.	.	PUNCT
sc-1149	68	1	the	the	DET
sc-1149	68	2	core	core	ADJ
sc-1149	68	3	components	component	NOUN
sc-1149	68	4	of	of	ADP
sc-1149	68	5	abac	abac	ADJ
sc-1149	68	6	model	model	NOUN
sc-1149	68	7	[	[	X
sc-1149	68	8	9	9	NUM
sc-1149	68	9	]	]	PUNCT
sc-1149	68	10	are	be	AUX
sc-1149	68	11	:	:	PUNCT
sc-1149	68	12	•	•	PUNCT
sc-1149	68	13	u	u	NOUN
sc-1149	68	14	,	,	PUNCT
sc-1149	68	15	o	o	PROPN
sc-1149	68	16	and	and	CCONJ
sc-1149	68	17	e	e	PROPN
sc-1149	68	18	represent	represent	VERB
sc-1149	68	19	finite	finite	ADJ
sc-1149	68	20	sets	set	NOUN
sc-1149	68	21	of	of	ADP
sc-1149	68	22	existing	exist	VERB
sc-1149	68	23	users	user	NOUN
sc-1149	68	24	,	,	PUNCT
sc-1149	68	25	objects	object	NOUN
sc-1149	68	26	and	and	CCONJ
sc-1149	68	27	environments	environment	NOUN
sc-1149	68	28	respectively	respectively	ADV
sc-1149	68	29	.	.	PUNCT
sc-1149	69	1	•	•	NUM
sc-1149	69	2	a	a	DET
sc-1149	69	3	=	=	PUNCT
sc-1149	69	4	{	{	PUNCT
sc-1149	69	5	create	create	NOUN
sc-1149	69	6	,	,	PUNCT
sc-1149	69	7	read	read	VERB
sc-1149	69	8	,	,	PUNCT
sc-1149	69	9	update	update	NOUN
sc-1149	69	10	,	,	PUNCT
sc-1149	69	11	delete	delete	NOUN
sc-1149	69	12	}	}	PUNCT
sc-1149	69	13	is	be	AUX
sc-1149	69	14	a	a	DET
sc-1149	69	15	finite	finite	ADJ
sc-1149	69	16	set	set	NOUN
sc-1149	69	17	of	of	ADP
sc-1149	69	18	actions	action	NOUN
sc-1149	69	19	.	.	PUNCT
sc-1149	70	1	•	•	NUM
sc-1149	70	2	uat	uat	PROPN
sc-1149	70	3	t	t	PROPN
sc-1149	70	4	,	,	PUNCT
sc-1149	70	5	oat	oat	NOUN
sc-1149	70	6	t	t	PROPN
sc-1149	70	7	and	and	CCONJ
sc-1149	70	8	eat	eat	VERB
sc-1149	70	9	t	t	PROPN
sc-1149	70	10	represent	represent	VERB
sc-1149	70	11	finite	finite	ADJ
sc-1149	70	12	sets	set	NOUN
sc-1149	70	13	of	of	ADP
sc-1149	70	14	user	user	NOUN
sc-1149	70	15	,	,	PUNCT
sc-1149	70	16	object	object	NOUN
sc-1149	70	17	and	and	CCONJ
sc-1149	70	18	environment	environment	NOUN
sc-1149	70	19	attribute	attribute	NOUN
sc-1149	70	20	functions	function	NOUN
sc-1149	70	21	respectively	respectively	ADV
sc-1149	70	22	.	.	PUNCT
sc-1149	71	1	•	•	NUM
sc-1149	71	2	for	for	ADP
sc-1149	71	3	each	each	DET
sc-1149	71	4	att	att	PROPN
sc-1149	71	5	∈	∈	PROPN
sc-1149	71	6	{	{	PUNCT
sc-1149	71	7	uat	uat	PROPN
sc-1149	71	8	t	t	PROPN
sc-1149	71	9	∪oat	∪oat	PROPN
sc-1149	71	10	t	t	PROPN
sc-1149	71	11	∪	∪	X
sc-1149	71	12	eat	eat	VERB
sc-1149	71	13	t	t	PROPN
sc-1149	71	14	}	}	PUNCT
sc-1149	72	1	,	,	PUNCT
sc-1149	72	2	range(att	range(att	NOUN
sc-1149	72	3	)	)	PUNCT
sc-1149	72	4	represents	represent	VERB
sc-1149	72	5	the	the	DET
sc-1149	72	6	attribute	attribute	NOUN
sc-1149	72	7	’s	’s	PART
sc-1149	72	8	range	range	NOUN
sc-1149	72	9	,	,	PUNCT
sc-1149	72	10	which	which	PRON
sc-1149	72	11	is	be	AUX
sc-1149	72	12	a	a	DET
sc-1149	72	13	finite	finite	ADJ
sc-1149	72	14	set	set	NOUN
sc-1149	72	15	of	of	ADP
sc-1149	72	16	atomic	atomic	ADJ
sc-1149	72	17	values	value	NOUN
sc-1149	72	18	.	.	PUNCT
sc-1149	73	1	2	2	NUM
sc-1149	73	2	eai	eai	NOUN
sc-1149	73	3	endorsed	endorse	VERB
sc-1149	73	4	transactions	transaction	NOUN
sc-1149	73	5	on	on	ADP
sc-1149	73	6	smart	smart	ADJ
sc-1149	73	7	cities	city	NOUN
sc-1149	73	8	02	02	NUM
sc-1149	73	9	2018	2018	NUM
sc-1149	73	10	06	06	NUM
sc-1149	73	11	2018	2018	NUM
sc-1149	73	12	|	|	ADV
sc-1149	73	13	volume	volume	NOUN
sc-1149	73	14	2	2	NUM
sc-1149	73	15	|	|	ADV
sc-1149	73	16	issue	issue	VERB
sc-1149	73	17	8	8	NUM
sc-1149	73	18	|	|	ADV
sc-1149	73	19	e3	e3	VERB
sc-1149	73	20	c	c	NOUN
sc-1149	73	21	-	-	PUNCT
sc-1149	73	22	abac	abac	ADJ
sc-1149	73	23	:	:	PUNCT
sc-1149	73	24	an	an	DET
sc-1149	73	25	abac	abac	ADJ
sc-1149	73	26	based	base	VERB
sc-1149	73	27	model	model	NOUN
sc-1149	73	28	for	for	ADP
sc-1149	73	29	collaboration	collaboration	NOUN
sc-1149	73	30	in	in	ADP
sc-1149	73	31	multi	multi	ADJ
sc-1149	73	32	-	-	ADJ
sc-1149	73	33	tenant	tenant	ADJ
sc-1149	73	34	environment	environment	NOUN
sc-1149	73	35	figure	figure	NOUN
sc-1149	73	36	1	1	NUM
sc-1149	73	37	.	.	PUNCT
sc-1149	74	1	a	a	DET
sc-1149	74	2	collaborative	collaborative	ADJ
sc-1149	74	3	session	session	NOUN
sc-1149	74	4	in	in	ADP
sc-1149	74	5	cloud	cloud	NOUN
sc-1149	74	6	environment	environment	NOUN
sc-1149	74	7	•	•	ADP
sc-1149	74	8	attt	attt	PROPN
sc-1149	74	9	ype	ype	PROPN
sc-1149	74	10	:	:	PUNCT
sc-1149	74	11	uat	uat	PROPN
sc-1149	74	12	t	t	PROPN
sc-1149	74	13	∪oat	∪oat	PROPN
sc-1149	74	14	t	t	PROPN
sc-1149	74	15	∪	∪	X
sc-1149	74	16	eat	eat	VERB
sc-1149	74	17	t	t	NOUN
sc-1149	74	18	→	→	SYM
sc-1149	74	19	{	{	PUNCT
sc-1149	74	20	set	set	NOUN
sc-1149	74	21	,	,	PUNCT
sc-1149	74	22	atomic	atomic	ADJ
sc-1149	74	23	}	}	PUNCT
sc-1149	74	24	,	,	PUNCT
sc-1149	74	25	specifies	specifie	NOUN
sc-1149	74	26	attributes	attribute	VERB
sc-1149	74	27	as	as	ADP
sc-1149	74	28	set	set	NOUN
sc-1149	74	29	or	or	CCONJ
sc-1149	74	30	atomic	atomic	ADJ
sc-1149	74	31	values	value	NOUN
sc-1149	74	32	.	.	PUNCT
sc-1149	75	1	•	•	NUM
sc-1149	75	2	each	each	DET
sc-1149	75	3	attribute	attribute	NOUN
sc-1149	75	4	function	function	NOUN
sc-1149	75	5	maps	map	VERB
sc-1149	75	6	elements	element	NOUN
sc-1149	75	7	in	in	ADP
sc-1149	75	8	u	u	NOUN
sc-1149	75	9	to	to	ADP
sc-1149	75	10	an	an	DET
sc-1149	75	11	atomic	atomic	ADJ
sc-1149	75	12	value	value	NOUN
sc-1149	75	13	or	or	CCONJ
sc-1149	75	14	a	a	DET
sc-1149	75	15	set	set	NOUN
sc-1149	75	16	–	–	PUNCT
sc-1149	75	17	∀ua	∀ua	NOUN
sc-1149	75	18	⊆	⊆	NUM
sc-1149	75	19	uat	uat	PROPN
sc-1149	75	20	t	t	PROPN
sc-1149	75	21	.	.	PUNCT
sc-1149	76	1	ua	ua	PROPN
sc-1149	76	2	:	:	PUNCT
sc-1149	76	3	u	u	PROPN
sc-1149	76	4	→	→	SYM
sc-1149	76	5	range(ua	range(ua	PROPN
sc-1149	76	6	)	)	PUNCT
sc-1149	76	7	if	if	SCONJ
sc-1149	76	8	attt	attt	PROPN
sc-1149	76	9	ype(ua	ype(ua	PROPN
sc-1149	76	10	)	)	PUNCT
sc-1149	77	1	=	=	SYM
sc-1149	77	2	atomic	atomic	ADJ
sc-1149	77	3	–	–	PUNCT
sc-1149	77	4	∀ua	∀ua	NOUN
sc-1149	77	5	⊆	⊆	NUM
sc-1149	77	6	uat	uat	PROPN
sc-1149	77	7	t	t	PROPN
sc-1149	77	8	.	.	PUNCT
sc-1149	78	1	ua	ua	PROPN
sc-1149	78	2	:	:	PUNCT
sc-1149	78	3	u	u	X
sc-1149	78	4	→	→	SYM
sc-1149	78	5	2range(ua	2range(ua	NUM
sc-1149	78	6	)	)	PUNCT
sc-1149	78	7	if	if	SCONJ
sc-1149	78	8	attt	attt	PROPN
sc-1149	78	9	ype(ua	ype(ua	PROPN
sc-1149	78	10	)	)	PUNCT
sc-1149	79	1	=	=	PRON
sc-1149	79	2	set	set	VERB
sc-1149	79	3	•	•	NOUN
sc-1149	79	4	each	each	DET
sc-1149	79	5	attribute	attribute	NOUN
sc-1149	79	6	function	function	NOUN
sc-1149	79	7	maps	map	VERB
sc-1149	79	8	elements	element	NOUN
sc-1149	79	9	in	in	ADP
sc-1149	79	10	o	o	NOUN
sc-1149	79	11	to	to	ADP
sc-1149	79	12	an	an	DET
sc-1149	79	13	atomic	atomic	ADJ
sc-1149	79	14	value	value	NOUN
sc-1149	79	15	or	or	CCONJ
sc-1149	79	16	a	a	DET
sc-1149	79	17	set	set	NOUN
sc-1149	79	18	–	–	PUNCT
sc-1149	79	19	∀oa	∀oa	PROPN
sc-1149	79	20	⊆	⊆	NUM
sc-1149	79	21	oat	oat	NOUN
sc-1149	79	22	t	t	NOUN
sc-1149	79	23	.oa	.oa	PUNCT
sc-1149	79	24	:	:	PUNCT
sc-1149	79	25	o→	o→	SYM
sc-1149	79	26	range(oa	range(oa	NOUN
sc-1149	79	27	)	)	PUNCT
sc-1149	79	28	if	if	SCONJ
sc-1149	79	29	attt	attt	PROPN
sc-1149	79	30	ype(oa	ype(oa	NOUN
sc-1149	79	31	)	)	PUNCT
sc-1149	79	32	=	=	SYM
sc-1149	79	33	atomic	atomic	ADJ
sc-1149	79	34	–	–	PUNCT
sc-1149	79	35	∀oa	∀oa	PROPN
sc-1149	79	36	⊆	⊆	NUM
sc-1149	79	37	oat	oat	NOUN
sc-1149	79	38	t	t	NOUN
sc-1149	79	39	.oa	.oa	PUNCT
sc-1149	79	40	:	:	PUNCT
sc-1149	80	1	o→	o→	NUM
sc-1149	80	2	2range(oa	2range(oa	NUM
sc-1149	80	3	)	)	PUNCT
sc-1149	80	4	if	if	SCONJ
sc-1149	80	5	attt	attt	PROPN
sc-1149	80	6	ype(oa	ype(oa	NOUN
sc-1149	80	7	)	)	PUNCT
sc-1149	80	8	=	=	VERB
sc-1149	80	9	set	set	VERB
sc-1149	80	10	•	•	NOUN
sc-1149	80	11	each	each	DET
sc-1149	80	12	attribute	attribute	NOUN
sc-1149	80	13	function	function	NOUN
sc-1149	80	14	maps	map	VERB
sc-1149	80	15	elements	element	NOUN
sc-1149	80	16	in	in	ADP
sc-1149	80	17	e	e	NOUN
sc-1149	80	18	to	to	ADP
sc-1149	80	19	an	an	DET
sc-1149	80	20	atomic	atomic	ADJ
sc-1149	80	21	value	value	NOUN
sc-1149	80	22	or	or	CCONJ
sc-1149	80	23	a	a	DET
sc-1149	80	24	set	set	NOUN
sc-1149	80	25	–	–	PUNCT
sc-1149	80	26	∀ea	∀ea	PROPN
sc-1149	80	27	⊆	⊆	NUM
sc-1149	80	28	eat	eat	VERB
sc-1149	80	29	t	t	NOUN
sc-1149	80	30	.ea	.ea	PUNCT
sc-1149	80	31	:	:	PUNCT
sc-1149	81	1	e	e	X
sc-1149	81	2	→	→	SYM
sc-1149	81	3	range(ea	range(ea	PROPN
sc-1149	81	4	)	)	PUNCT
sc-1149	81	5	if	if	SCONJ
sc-1149	81	6	attt	attt	PROPN
sc-1149	81	7	ype(ea	ype(ea	PROPN
sc-1149	81	8	)	)	PUNCT
sc-1149	81	9	=	=	SYM
sc-1149	81	10	atomic	atomic	ADJ
sc-1149	81	11	–	–	PUNCT
sc-1149	81	12	∀ea	∀ea	PROPN
sc-1149	81	13	⊆	⊆	NUM
sc-1149	81	14	eat	eat	VERB
sc-1149	81	15	t	t	NOUN
sc-1149	81	16	.ea	.ea	PUNCT
sc-1149	81	17	:	:	PUNCT
sc-1149	82	1	e	e	X
sc-1149	82	2	→	→	SYM
sc-1149	82	3	2range(ea	2range(ea	NUM
sc-1149	82	4	)	)	PUNCT
sc-1149	82	5	if	if	SCONJ
sc-1149	82	6	attt	attt	PROPN
sc-1149	82	7	ype(ea	ype(ea	AUX
sc-1149	82	8	)	)	PUNCT
sc-1149	82	9	=	=	VERB
sc-1149	82	10	set	set	VERB
sc-1149	82	11	•	•	NOUN
sc-1149	82	12	an	an	DET
sc-1149	82	13	authorization	authorization	NOUN
sc-1149	82	14	that	that	PRON
sc-1149	82	15	decides	decide	VERB
sc-1149	82	16	on	on	ADP
sc-1149	82	17	whether	whether	SCONJ
sc-1149	82	18	a	a	DET
sc-1149	82	19	user	user	NOUN
sc-1149	82	20	u	u	NOUN
sc-1149	82	21	can	can	AUX
sc-1149	82	22	access	access	VERB
sc-1149	82	23	an	an	DET
sc-1149	82	24	object	object	NOUN
sc-1149	82	25	o	o	NOUN
sc-1149	82	26	in	in	ADP
sc-1149	82	27	a	a	DET
sc-1149	82	28	particular	particular	ADJ
sc-1149	82	29	environment	environment	NOUN
sc-1149	82	30	e	e	NOUN
sc-1149	82	31	for	for	ADP
sc-1149	82	32	the	the	DET
sc-1149	82	33	action	action	NOUN
sc-1149	82	34	a	a	PRON
sc-1149	82	35	,	,	PUNCT
sc-1149	82	36	is	be	AUX
sc-1149	82	37	a	a	DET
sc-1149	82	38	boolean	boolean	ADJ
sc-1149	82	39	function	function	NOUN
sc-1149	82	40	of	of	ADP
sc-1149	82	41	u	u	NOUN
sc-1149	82	42	,	,	PUNCT
sc-1149	82	43	o	o	NOUN
sc-1149	82	44	,	,	PUNCT
sc-1149	82	45	and	and	CCONJ
sc-1149	82	46	e	e	NOUN
sc-1149	82	47	attributes	attribute	NOUN
sc-1149	82	48	:	:	PUNCT
sc-1149	82	49	rule	rule	NOUN
sc-1149	82	50	:	:	PUNCT
sc-1149	82	51	authorizationa(u	authorizationa(u	NUM
sc-1149	82	52	,	,	PUNCT
sc-1149	82	53	o	o	NOUN
sc-1149	82	54	,	,	PUNCT
sc-1149	82	55	e)→	e)→	ADJ
sc-1149	82	56	f	f	X
sc-1149	82	57	(	(	PUNCT
sc-1149	82	58	at	at	ADP
sc-1149	82	59	tr(u	tr(u	NOUN
sc-1149	82	60	)	)	PUNCT
sc-1149	82	61	,	,	PUNCT
sc-1149	82	62	at	at	ADP
sc-1149	82	63	t	t	PROPN
sc-1149	82	64	r(o	r(o	PROPN
sc-1149	82	65	)	)	PUNCT
sc-1149	82	66	,	,	PUNCT
sc-1149	82	67	at	at	ADP
sc-1149	82	68	t	t	PROPN
sc-1149	82	69	r(e	r(e	PROPN
sc-1149	82	70	)	)	PUNCT
sc-1149	82	71	)	)	PUNCT
sc-1149	82	72	.	.	PUNCT
sc-1149	83	1	3	3	X
sc-1149	83	2	.	.	X
sc-1149	83	3	related	relate	VERB
sc-1149	83	4	work	work	NOUN
sc-1149	83	5	several	several	ADJ
sc-1149	83	6	works	work	NOUN
sc-1149	83	7	have	have	AUX
sc-1149	83	8	been	be	AUX
sc-1149	83	9	in	in	ADP
sc-1149	83	10	the	the	DET
sc-1149	83	11	literature	literature	NOUN
sc-1149	83	12	to	to	PART
sc-1149	83	13	ensure	ensure	VERB
sc-1149	83	14	access	access	NOUN
sc-1149	83	15	control	control	NOUN
sc-1149	83	16	in	in	ADP
sc-1149	83	17	multiple	multiple	ADJ
sc-1149	83	18	environments	environment	NOUN
sc-1149	83	19	.	.	PUNCT
sc-1149	84	1	in	in	ADP
sc-1149	84	2	the	the	DET
sc-1149	84	3	task	task	NOUN
sc-1149	84	4	based	base	VERB
sc-1149	84	5	access	access	NOUN
sc-1149	84	6	control	control	NOUN
sc-1149	84	7	[	[	X
sc-1149	84	8	4	4	NUM
sc-1149	84	9	]	]	X
sc-1149	84	10	(	(	PUNCT
sc-1149	84	11	tbac	tbac	NOUN
sc-1149	84	12	)	)	PUNCT
sc-1149	84	13	,	,	PUNCT
sc-1149	84	14	the	the	DET
sc-1149	84	15	permissions	permission	NOUN
sc-1149	84	16	are	be	AUX
sc-1149	84	17	granted	grant	VERB
sc-1149	84	18	according	accord	VERB
sc-1149	84	19	to	to	ADP
sc-1149	84	20	the	the	DET
sc-1149	84	21	progress	progress	NOUN
sc-1149	84	22	of	of	ADP
sc-1149	84	23	several	several	ADJ
sc-1149	84	24	tasks	task	NOUN
sc-1149	84	25	.	.	PUNCT
sc-1149	85	1	the	the	DET
sc-1149	85	2	trbac	trbac	NOUN
sc-1149	86	1	[	[	X
sc-1149	86	2	18	18	NUM
sc-1149	86	3	]	]	PUNCT
sc-1149	86	4	model	model	NOUN
sc-1149	86	5	is	be	AUX
sc-1149	86	6	constructed	construct	VERB
sc-1149	86	7	by	by	ADP
sc-1149	86	8	adding	add	VERB
sc-1149	86	9	the	the	DET
sc-1149	86	10	"	"	PUNCT
sc-1149	86	11	task	task	NOUN
sc-1149	86	12	"	"	PUNCT
sc-1149	86	13	concept	concept	NOUN
sc-1149	86	14	to	to	ADP
sc-1149	86	15	the	the	DET
sc-1149	86	16	rbac	rbac	PROPN
sc-1149	86	17	model	model	PROPN
sc-1149	86	18	.	.	PUNCT
sc-1149	87	1	in	in	ADP
sc-1149	87	2	trbac	trbac	PROPN
sc-1149	87	3	,	,	PUNCT
sc-1149	87	4	the	the	DET
sc-1149	87	5	user	user	NOUN
sc-1149	87	6	has	have	VERB
sc-1149	87	7	a	a	DET
sc-1149	87	8	relationship	relationship	NOUN
sc-1149	87	9	with	with	ADP
sc-1149	87	10	permission	permission	NOUN
sc-1149	87	11	through	through	ADP
sc-1149	87	12	role	role	NOUN
sc-1149	87	13	and	and	CCONJ
sc-1149	87	14	task	task	NOUN
sc-1149	87	15	.	.	PUNCT
sc-1149	88	1	on	on	ADP
sc-1149	88	2	the	the	DET
sc-1149	88	3	other	other	ADJ
sc-1149	88	4	hand	hand	NOUN
sc-1149	88	5	,	,	PUNCT
sc-1149	88	6	in	in	ADP
sc-1149	88	7	the	the	DET
sc-1149	88	8	team	team	NOUN
sc-1149	88	9	access	access	NOUN
sc-1149	88	10	control	control	NOUN
sc-1149	88	11	model	model	NOUN
sc-1149	88	12	(	(	PUNCT
sc-1149	88	13	tmac	tmac	PROPN
sc-1149	88	14	)	)	PUNCT
sc-1149	89	1	[	[	X
sc-1149	89	2	6	6	NUM
sc-1149	89	3	]	]	PUNCT
sc-1149	89	4	,	,	PUNCT
sc-1149	89	5	the	the	DET
sc-1149	89	6	permissions	permission	NOUN
sc-1149	89	7	are	be	AUX
sc-1149	89	8	granted	grant	VERB
sc-1149	89	9	to	to	ADP
sc-1149	89	10	each	each	DET
sc-1149	89	11	user	user	NOUN
sc-1149	89	12	through	through	ADP
sc-1149	89	13	its	its	PRON
sc-1149	89	14	role	role	NOUN
sc-1149	89	15	and	and	CCONJ
sc-1149	89	16	the	the	DET
sc-1149	89	17	current	current	ADJ
sc-1149	89	18	activities	activity	NOUN
sc-1149	89	19	of	of	ADP
sc-1149	89	20	the	the	DET
sc-1149	89	21	team	team	NOUN
sc-1149	89	22	.	.	PUNCT
sc-1149	90	1	these	these	DET
sc-1149	90	2	models	model	NOUN
sc-1149	90	3	enable	enable	VERB
sc-1149	90	4	fine	fine	ADV
sc-1149	90	5	-	-	PUNCT
sc-1149	90	6	grained	grain	VERB
sc-1149	90	7	access	access	NOUN
sc-1149	90	8	control	control	NOUN
sc-1149	90	9	but	but	CCONJ
sc-1149	90	10	they	they	PRON
sc-1149	90	11	do	do	AUX
sc-1149	90	12	not	not	PART
sc-1149	90	13	incorporate	incorporate	VERB
sc-1149	90	14	contextual	contextual	ADJ
sc-1149	90	15	parameters	parameter	NOUN
sc-1149	90	16	into	into	ADP
sc-1149	90	17	security	security	NOUN
sc-1149	90	18	considerations	consideration	NOUN
sc-1149	90	19	and	and	CCONJ
sc-1149	90	20	do	do	AUX
sc-1149	90	21	not	not	PART
sc-1149	90	22	support	support	VERB
sc-1149	90	23	collaboration	collaboration	NOUN
sc-1149	90	24	in	in	ADP
sc-1149	90	25	multi	multi	ADJ
sc-1149	90	26	-	-	ADJ
sc-1149	90	27	tenants	tenant	NOUN
sc-1149	90	28	environments	environment	NOUN
sc-1149	90	29	.	.	PUNCT
sc-1149	91	1	moreover	moreover	ADV
sc-1149	91	2	,	,	PUNCT
sc-1149	91	3	the	the	DET
sc-1149	91	4	notion	notion	NOUN
sc-1149	91	5	of	of	ADP
sc-1149	91	6	"	"	PUNCT
sc-1149	91	7	team	team	NOUN
sc-1149	91	8	"	"	PUNCT
sc-1149	91	9	used	use	VERB
sc-1149	91	10	in	in	ADP
sc-1149	91	11	tmac	tmac	PROPN
sc-1149	91	12	model	model	NOUN
sc-1149	91	13	is	be	AUX
sc-1149	91	14	static	static	ADJ
sc-1149	91	15	.	.	PUNCT
sc-1149	92	1	therefore	therefore	ADV
sc-1149	92	2	,	,	PUNCT
sc-1149	92	3	this	this	DET
sc-1149	92	4	model	model	NOUN
sc-1149	92	5	does	do	AUX
sc-1149	92	6	not	not	PART
sc-1149	92	7	support	support	VERB
sc-1149	92	8	dynamic	dynamic	ADJ
sc-1149	92	9	collaboration	collaboration	NOUN
sc-1149	92	10	.	.	PUNCT
sc-1149	93	1	other	other	ADJ
sc-1149	93	2	access	access	NOUN
sc-1149	93	3	control	control	NOUN
sc-1149	93	4	approaches	approach	NOUN
sc-1149	93	5	have	have	AUX
sc-1149	93	6	been	be	AUX
sc-1149	93	7	suggested	suggest	VERB
sc-1149	93	8	to	to	PART
sc-1149	93	9	secure	secure	VERB
sc-1149	93	10	resources	resource	NOUN
sc-1149	93	11	in	in	ADP
sc-1149	93	12	cloud	cloud	ADJ
sc-1149	93	13	environments	environment	NOUN
sc-1149	94	1	[	[	X
sc-1149	94	2	2	2	NUM
sc-1149	94	3	,	,	PUNCT
sc-1149	94	4	3	3	NUM
sc-1149	94	5	,	,	PUNCT
sc-1149	94	6	19	19	NUM
sc-1149	94	7	–	–	PUNCT
sc-1149	94	8	21	21	NUM
sc-1149	94	9	]	]	PUNCT
sc-1149	94	10	.	.	PUNCT
sc-1149	95	1	calero	calero	PROPN
sc-1149	96	1	[	[	X
sc-1149	96	2	2	2	X
sc-1149	96	3	]	]	PUNCT
sc-1149	96	4	suggests	suggest	VERB
sc-1149	96	5	a	a	DET
sc-1149	96	6	multi	multi	ADJ
sc-1149	96	7	-	-	ADJ
sc-1149	96	8	tenancy	tenancy	ADJ
sc-1149	96	9	authorization	authorization	NOUN
sc-1149	96	10	system	system	NOUN
sc-1149	96	11	.	.	PUNCT
sc-1149	97	1	this	this	DET
sc-1149	97	2	work	work	NOUN
sc-1149	97	3	is	be	AUX
sc-1149	97	4	based	base	VERB
sc-1149	97	5	on	on	ADP
sc-1149	97	6	hierarchical	hierarchical	ADJ
sc-1149	97	7	role	role	NOUN
sc-1149	97	8	-	-	PUNCT
sc-1149	97	9	base	base	NOUN
sc-1149	97	10	access	access	NOUN
sc-1149	97	11	control	control	NOUN
sc-1149	97	12	with	with	ADP
sc-1149	97	13	a	a	DET
sc-1149	97	14	coarse	coarse	ADV
sc-1149	97	15	-	-	PUNCT
sc-1149	97	16	grained	grain	VERB
sc-1149	97	17	trust	trust	NOUN
sc-1149	97	18	relation	relation	NOUN
sc-1149	97	19	and	and	CCONJ
sc-1149	97	20	path	path	NOUN
sc-1149	97	21	-	-	PUNCT
sc-1149	97	22	based	base	VERB
sc-1149	97	23	object	object	NOUN
sc-1149	97	24	hierarchies	hierarchy	NOUN
sc-1149	97	25	.	.	PUNCT
sc-1149	98	1	calero	calero	VERB
sc-1149	98	2	et	et	PROPN
sc-1149	98	3	al	al	PROPN
sc-1149	99	1	[	[	X
sc-1149	99	2	2	2	NUM
sc-1149	99	3	]	]	PUNCT
sc-1149	99	4	assumes	assume	VERB
sc-1149	99	5	that	that	SCONJ
sc-1149	99	6	each	each	DET
sc-1149	99	7	issuer	issuer	NOUN
sc-1149	99	8	may	may	AUX
sc-1149	99	9	use	use	VERB
sc-1149	99	10	several	several	ADJ
sc-1149	99	11	cloud	cloud	NOUN
sc-1149	99	12	services	service	NOUN
sc-1149	99	13	and	and	CCONJ
sc-1149	99	14	could	could	AUX
sc-1149	99	15	collaborate	collaborate	VERB
sc-1149	99	16	with	with	ADP
sc-1149	99	17	other	other	ADJ
sc-1149	99	18	issuers	issuer	NOUN
sc-1149	99	19	.	.	PUNCT
sc-1149	100	1	tang	tang	PROPN
sc-1149	101	1	[	[	X
sc-1149	101	2	20	20	NUM
sc-1149	101	3	]	]	PUNCT
sc-1149	101	4	proposes	propose	VERB
sc-1149	101	5	a	a	DET
sc-1149	101	6	multi	multi	ADJ
sc-1149	101	7	-	-	ADJ
sc-1149	101	8	tenancy	tenancy	ADJ
sc-1149	101	9	authorization	authorization	NOUN
sc-1149	101	10	system	system	NOUN
sc-1149	101	11	(	(	PUNCT
sc-1149	101	12	mtas	mtas	NOUN
sc-1149	101	13	)	)	PUNCT
sc-1149	101	14	model	model	NOUN
sc-1149	101	15	.	.	PUNCT
sc-1149	102	1	this	this	DET
sc-1149	102	2	model	model	NOUN
sc-1149	102	3	is	be	AUX
sc-1149	102	4	based	base	VERB
sc-1149	102	5	on	on	ADP
sc-1149	102	6	the	the	DET
sc-1149	102	7	rbac	rbac	PROPN
sc-1149	102	8	model	model	NOUN
sc-1149	102	9	and	and	CCONJ
sc-1149	102	10	the	the	DET
sc-1149	102	11	trust	trust	NOUN
sc-1149	102	12	relations	relation	NOUN
sc-1149	102	13	established	establish	VERB
sc-1149	102	14	between	between	ADP
sc-1149	102	15	the	the	DET
sc-1149	102	16	cloud	cloud	NOUN
sc-1149	102	17	issuers	issuer	NOUN
sc-1149	102	18	in	in	ADP
sc-1149	102	19	order	order	NOUN
sc-1149	102	20	to	to	PART
sc-1149	102	21	support	support	VERB
sc-1149	102	22	collaboration	collaboration	NOUN
sc-1149	102	23	between	between	ADP
sc-1149	102	24	these	these	DET
sc-1149	102	25	issuers	issuer	NOUN
sc-1149	102	26	.	.	PUNCT
sc-1149	103	1	the	the	DET
sc-1149	103	2	issuer	issuer	NOUN
sc-1149	103	3	that	that	PRON
sc-1149	103	4	establishes	establish	VERB
sc-1149	103	5	the	the	DET
sc-1149	103	6	trust	trust	NOUN
sc-1149	103	7	is	be	AUX
sc-1149	103	8	called	call	VERB
sc-1149	103	9	the	the	DET
sc-1149	103	10	truster	truster	NOUN
sc-1149	103	11	and	and	CCONJ
sc-1149	103	12	the	the	DET
sc-1149	103	13	one	one	NOUN
sc-1149	103	14	being	be	AUX
sc-1149	103	15	trusted	trust	VERB
sc-1149	103	16	is	be	AUX
sc-1149	103	17	called	call	VERB
sc-1149	103	18	the	the	DET
sc-1149	103	19	trustee	trustee	NOUN
sc-1149	103	20	.	.	PUNCT
sc-1149	104	1	the	the	DET
sc-1149	104	2	trustee	trustee	NOUN
sc-1149	104	3	3	3	NUM
sc-1149	104	4	eai	eai	NOUN
sc-1149	104	5	endorsed	endorse	VERB
sc-1149	104	6	transactions	transaction	NOUN
sc-1149	104	7	on	on	ADP
sc-1149	104	8	smart	smart	ADJ
sc-1149	104	9	cities	city	NOUN
sc-1149	104	10	02	02	NUM
sc-1149	104	11	2018	2018	NUM
sc-1149	104	12	06	06	NUM
sc-1149	104	13	2018	2018	NUM
sc-1149	104	14	|	|	ADV
sc-1149	104	15	volume	volume	NOUN
sc-1149	104	16	2	2	NUM
sc-1149	104	17	|	|	ADV
sc-1149	104	18	issue	issue	VERB
sc-1149	104	19	8	8	NUM
sc-1149	104	20	|	|	NOUN
sc-1149	104	21	e3	e3	VERB
sc-1149	104	22	m.	m.	NOUN
sc-1149	104	23	madani	madani	PROPN
sc-1149	104	24	,	,	PUNCT
sc-1149	104	25	m.	m.	NOUN
sc-1149	104	26	erradi	erradi	PROPN
sc-1149	104	27	,	,	PUNCT
sc-1149	104	28	y.	y.	PROPN
sc-1149	104	29	benkaouz	benkaouz	PROPN
sc-1149	104	30	can	can	AUX
sc-1149	104	31	authorize	authorize	VERB
sc-1149	104	32	one	one	NUM
sc-1149	104	33	of	of	ADP
sc-1149	104	34	the	the	DET
sc-1149	104	35	trusters	truster	NOUN
sc-1149	104	36	roles	role	VERB
sc-1149	104	37	to	to	ADP
sc-1149	104	38	access	access	NOUN
sc-1149	104	39	to	to	ADP
sc-1149	104	40	a	a	DET
sc-1149	104	41	trustee	trustee	NOUN
sc-1149	104	42	resource	resource	NOUN
sc-1149	104	43	.	.	PUNCT
sc-1149	105	1	the	the	DET
sc-1149	105	2	multi	multi	ADJ
sc-1149	105	3	-	-	ADJ
sc-1149	105	4	tenant	tenant	ADJ
sc-1149	105	5	role	role	NOUN
sc-1149	105	6	-	-	PUNCT
sc-1149	105	7	based	base	VERB
sc-1149	105	8	access	access	NOUN
sc-1149	105	9	control	control	NOUN
sc-1149	105	10	(	(	PUNCT
sc-1149	105	11	mtrbac	mtrbac	PROPN
sc-1149	105	12	)	)	PUNCT
sc-1149	105	13	proposed	propose	VERB
sc-1149	105	14	by	by	ADP
sc-1149	105	15	tang	tang	PROPN
sc-1149	105	16	et	et	PROPN
sc-1149	105	17	al	al	PROPN
sc-1149	105	18	in	in	ADP
sc-1149	105	19	[	[	X
sc-1149	105	20	3	3	NUM
sc-1149	105	21	]	]	PUNCT
sc-1149	105	22	is	be	AUX
sc-1149	105	23	a	a	DET
sc-1149	105	24	model	model	NOUN
sc-1149	105	25	that	that	PRON
sc-1149	105	26	provides	provide	VERB
sc-1149	105	27	fine	fine	ADV
sc-1149	105	28	-	-	PUNCT
sc-1149	105	29	grained	grain	VERB
sc-1149	105	30	access	access	NOUN
sc-1149	105	31	control	control	NOUN
sc-1149	105	32	in	in	ADP
sc-1149	105	33	collaborative	collaborative	ADJ
sc-1149	105	34	cloud	cloud	NOUN
sc-1149	105	35	environments	environment	NOUN
sc-1149	105	36	by	by	ADP
sc-1149	105	37	using	use	VERB
sc-1149	105	38	trust	trust	NOUN
sc-1149	105	39	relations	relation	NOUN
sc-1149	105	40	among	among	ADP
sc-1149	105	41	tenants	tenant	NOUN
sc-1149	105	42	.	.	PUNCT
sc-1149	106	1	in	in	ADP
sc-1149	106	2	this	this	DET
sc-1149	106	3	work	work	NOUN
sc-1149	106	4	,	,	PUNCT
sc-1149	106	5	trust	trust	NOUN
sc-1149	106	6	relations	relation	NOUN
sc-1149	106	7	among	among	ADP
sc-1149	106	8	issuers	issuer	NOUN
sc-1149	106	9	were	be	AUX
sc-1149	106	10	not	not	PART
sc-1149	106	11	considered	consider	VERB
sc-1149	106	12	(	(	PUNCT
sc-1149	106	13	i.e.	i.e.	X
sc-1149	106	14	they	they	PRON
sc-1149	106	15	distinguish	distinguish	VERB
sc-1149	106	16	between	between	ADP
sc-1149	106	17	issuers	issuer	NOUN
sc-1149	106	18	and	and	CCONJ
sc-1149	106	19	tenants	tenant	NOUN
sc-1149	106	20	)	)	PUNCT
sc-1149	106	21	.	.	PUNCT
sc-1149	107	1	in	in	ADP
sc-1149	107	2	mt	mt	PROPN
sc-1149	107	3	-	-	PUNCT
sc-1149	107	4	rbac	rbac	PROPN
sc-1149	107	5	model	model	PROPN
sc-1149	107	6	,	,	PUNCT
sc-1149	107	7	the	the	DET
sc-1149	107	8	truster	truster	NOUN
sc-1149	107	9	exposes	expose	VERB
sc-1149	107	10	some	some	DET
sc-1149	107	11	trusters	truster	NOUN
sc-1149	107	12	roles	role	NOUN
sc-1149	107	13	to	to	ADP
sc-1149	107	14	the	the	DET
sc-1149	107	15	trustee	trustee	NOUN
sc-1149	107	16	.	.	PUNCT
sc-1149	108	1	this	this	DET
sc-1149	108	2	trustee	trustee	NOUN
sc-1149	108	3	assigns	assign	VERB
sc-1149	108	4	their	their	PRON
sc-1149	108	5	users	user	NOUN
sc-1149	108	6	to	to	ADP
sc-1149	108	7	the	the	DET
sc-1149	108	8	trusters	truster	NOUN
sc-1149	108	9	roles	role	NOUN
sc-1149	108	10	.	.	PUNCT
sc-1149	109	1	thus	thus	ADV
sc-1149	109	2	,	,	PUNCT
sc-1149	109	3	the	the	DET
sc-1149	109	4	users	user	NOUN
sc-1149	109	5	can	can	AUX
sc-1149	109	6	access	access	VERB
sc-1149	109	7	to	to	ADP
sc-1149	109	8	the	the	DET
sc-1149	109	9	trusters	truster	NOUN
sc-1149	109	10	resources	resource	NOUN
sc-1149	109	11	by	by	ADP
sc-1149	109	12	activating	activate	VERB
sc-1149	109	13	the	the	DET
sc-1149	109	14	trusters	truster	NOUN
sc-1149	109	15	roles	role	NOUN
sc-1149	109	16	.	.	PUNCT
sc-1149	110	1	in	in	ADP
sc-1149	110	2	collaborative	collaborative	ADJ
sc-1149	110	3	task	task	NOUN
sc-1149	110	4	role	role	NOUN
sc-1149	110	5	-	-	PUNCT
sc-1149	110	6	based	base	VERB
sc-1149	110	7	access	access	NOUN
sc-1149	110	8	control	control	PROPN
sc-1149	110	9	ctrbac	ctrbac	PROPN
sc-1149	110	10	model	model	NOUN
sc-1149	110	11	[	[	X
sc-1149	110	12	21	21	NUM
sc-1149	110	13	]	]	PUNCT
sc-1149	110	14	,	,	PUNCT
sc-1149	110	15	authors	author	NOUN
sc-1149	110	16	propose	propose	VERB
sc-1149	110	17	an	an	DET
sc-1149	110	18	approach	approach	NOUN
sc-1149	110	19	to	to	PART
sc-1149	110	20	ensure	ensure	VERB
sc-1149	110	21	access	access	NOUN
sc-1149	110	22	control	control	NOUN
sc-1149	110	23	to	to	ADP
sc-1149	110	24	the	the	DET
sc-1149	110	25	shared	share	VERB
sc-1149	110	26	resources	resource	NOUN
sc-1149	110	27	in	in	ADP
sc-1149	110	28	a	a	DET
sc-1149	110	29	collaborative	collaborative	ADJ
sc-1149	110	30	session	session	NOUN
sc-1149	110	31	in	in	ADP
sc-1149	110	32	multi	multi	ADJ
sc-1149	110	33	-	-	ADJ
sc-1149	110	34	tenants	tenant	NOUN
sc-1149	110	35	environments	environment	NOUN
sc-1149	110	36	.	.	PUNCT
sc-1149	111	1	the	the	DET
sc-1149	111	2	suggested	suggest	VERB
sc-1149	111	3	ctrbac	ctrbac	PROPN
sc-1149	111	4	model	model	NOUN
sc-1149	111	5	is	be	AUX
sc-1149	111	6	an	an	DET
sc-1149	111	7	extended	extended	ADJ
sc-1149	111	8	version	version	NOUN
sc-1149	111	9	of	of	ADP
sc-1149	111	10	rbac	rbac	PROPN
sc-1149	111	11	in	in	ADP
sc-1149	111	12	which	which	PRON
sc-1149	111	13	new	new	ADJ
sc-1149	111	14	entities	entity	NOUN
sc-1149	111	15	were	be	AUX
sc-1149	111	16	added	add	VERB
sc-1149	111	17	in	in	ADP
sc-1149	111	18	order	order	NOUN
sc-1149	111	19	to	to	PART
sc-1149	111	20	support	support	VERB
sc-1149	111	21	together	together	ADV
sc-1149	111	22	the	the	DET
sc-1149	111	23	cross	cross	ADJ
sc-1149	111	24	tenants	tenant	NOUN
sc-1149	111	25	access	access	NOUN
sc-1149	111	26	and	and	CCONJ
sc-1149	111	27	the	the	DET
sc-1149	111	28	task	task	NOUN
sc-1149	111	29	concept	concept	NOUN
sc-1149	111	30	.	.	PUNCT
sc-1149	112	1	nonetheless	nonetheless	ADV
sc-1149	112	2	,	,	PUNCT
sc-1149	112	3	in	in	ADP
sc-1149	112	4	this	this	DET
sc-1149	112	5	model	model	NOUN
sc-1149	112	6	,	,	PUNCT
sc-1149	112	7	a	a	DET
sc-1149	112	8	given	give	VERB
sc-1149	112	9	tenant	tenant	NOUN
sc-1149	112	10	may	may	AUX
sc-1149	112	11	use	use	VERB
sc-1149	112	12	some	some	DET
sc-1149	112	13	roles	role	NOUN
sc-1149	112	14	owned	own	VERB
sc-1149	112	15	by	by	ADP
sc-1149	112	16	other	other	ADJ
sc-1149	112	17	tenants	tenant	NOUN
sc-1149	112	18	which	which	PRON
sc-1149	112	19	will	will	AUX
sc-1149	112	20	compromise	compromise	VERB
sc-1149	112	21	the	the	DET
sc-1149	112	22	confidentiality	confidentiality	NOUN
sc-1149	112	23	requirement	requirement	NOUN
sc-1149	112	24	.	.	PUNCT
sc-1149	113	1	furthermore	furthermore	ADV
sc-1149	113	2	,	,	PUNCT
sc-1149	113	3	this	this	DET
sc-1149	113	4	model	model	NOUN
sc-1149	113	5	is	be	AUX
sc-1149	113	6	based	base	VERB
sc-1149	113	7	on	on	ADP
sc-1149	113	8	rbac	rbac	PROPN
sc-1149	113	9	model	model	NOUN
sc-1149	113	10	which	which	PRON
sc-1149	113	11	is	be	AUX
sc-1149	113	12	not	not	PART
sc-1149	113	13	flexible	flexible	ADJ
sc-1149	113	14	enough	enough	ADV
sc-1149	113	15	to	to	PART
sc-1149	113	16	support	support	VERB
sc-1149	113	17	a	a	DET
sc-1149	113	18	complex	complex	ADJ
sc-1149	113	19	policy	policy	NOUN
sc-1149	113	20	rules	rule	NOUN
sc-1149	113	21	.	.	PUNCT
sc-1149	114	1	these	these	DET
sc-1149	114	2	models	model	NOUN
sc-1149	114	3	are	be	AUX
sc-1149	114	4	based	base	VERB
sc-1149	114	5	on	on	ADP
sc-1149	114	6	a	a	DET
sc-1149	114	7	decentralized	decentralized	ADJ
sc-1149	114	8	approach	approach	NOUN
sc-1149	114	9	.	.	PUNCT
sc-1149	115	1	it	it	PRON
sc-1149	115	2	supports	support	VERB
sc-1149	115	3	the	the	DET
sc-1149	115	4	following	follow	VERB
sc-1149	115	5	requirements	requirement	NOUN
sc-1149	115	6	:	:	PUNCT
sc-1149	115	7	(	(	PUNCT
sc-1149	115	8	1	1	X
sc-1149	115	9	)	)	PUNCT
sc-1149	115	10	autonomy	autonomy	NOUN
sc-1149	115	11	and	and	CCONJ
sc-1149	115	12	independence	independence	NOUN
sc-1149	115	13	:	:	PUNCT
sc-1149	115	14	each	each	DET
sc-1149	115	15	local	local	ADJ
sc-1149	115	16	administrator	administrator	NOUN
sc-1149	115	17	maintains	maintain	VERB
sc-1149	115	18	control	control	NOUN
sc-1149	115	19	over	over	ADP
sc-1149	115	20	his	his	PRON
sc-1149	115	21	system	system	NOUN
sc-1149	115	22	.	.	PUNCT
sc-1149	116	1	each	each	DET
sc-1149	116	2	organization	organization	NOUN
sc-1149	116	3	defines	define	VERB
sc-1149	116	4	its	its	PRON
sc-1149	116	5	local	local	ADJ
sc-1149	116	6	access	access	NOUN
sc-1149	116	7	control	control	NOUN
sc-1149	116	8	policy	policy	NOUN
sc-1149	116	9	,	,	PUNCT
sc-1149	116	10	and	and	CCONJ
sc-1149	116	11	respects	respect	VERB
sc-1149	116	12	the	the	DET
sc-1149	116	13	global	global	ADJ
sc-1149	116	14	access	access	NOUN
sc-1149	116	15	control	control	NOUN
sc-1149	116	16	policy	policy	NOUN
sc-1149	116	17	.	.	PUNCT
sc-1149	117	1	(	(	PUNCT
sc-1149	117	2	2	2	X
sc-1149	117	3	)	)	PUNCT
sc-1149	117	4	cross	cross	NOUN
sc-1149	117	5	tenant	tenant	NOUN
sc-1149	117	6	access	access	NOUN
sc-1149	117	7	:	:	PUNCT
sc-1149	117	8	tenant	tenant	NOUN
sc-1149	117	9	uses	use	VERB
sc-1149	117	10	some	some	DET
sc-1149	117	11	resources	resource	NOUN
sc-1149	117	12	shared	share	VERB
sc-1149	117	13	by	by	ADP
sc-1149	117	14	other	other	ADJ
sc-1149	117	15	tenants	tenant	NOUN
sc-1149	117	16	.	.	PUNCT
sc-1149	118	1	however	however	ADV
sc-1149	118	2	,	,	PUNCT
sc-1149	118	3	these	these	DET
sc-1149	118	4	models	model	NOUN
sc-1149	118	5	do	do	AUX
sc-1149	118	6	not	not	PART
sc-1149	118	7	support	support	VERB
sc-1149	118	8	task	task	NOUN
sc-1149	118	9	and	and	CCONJ
sc-1149	118	10	scalability	scalability	NOUN
sc-1149	118	11	requirements	requirement	NOUN
sc-1149	118	12	,	,	PUNCT
sc-1149	118	13	especially	especially	ADV
sc-1149	118	14	if	if	SCONJ
sc-1149	118	15	we	we	PRON
sc-1149	118	16	assume	assume	VERB
sc-1149	118	17	that	that	SCONJ
sc-1149	118	18	the	the	DET
sc-1149	118	19	collaboration	collaboration	NOUN
sc-1149	118	20	is	be	AUX
sc-1149	118	21	a	a	DET
sc-1149	118	22	workflow	workflow	NOUN
sc-1149	118	23	composed	compose	VERB
sc-1149	118	24	of	of	ADP
sc-1149	118	25	a	a	DET
sc-1149	118	26	set	set	NOUN
sc-1149	118	27	of	of	ADP
sc-1149	118	28	tasks	task	NOUN
sc-1149	118	29	.	.	PUNCT
sc-1149	119	1	moreover	moreover	ADV
sc-1149	119	2	,	,	PUNCT
sc-1149	119	3	these	these	DET
sc-1149	119	4	approaches	approach	NOUN
sc-1149	119	5	are	be	AUX
sc-1149	119	6	based	base	VERB
sc-1149	119	7	on	on	ADP
sc-1149	119	8	role	role	NOUN
sc-1149	119	9	based	base	VERB
sc-1149	119	10	access	access	NOUN
sc-1149	119	11	control	control	NOUN
sc-1149	119	12	(	(	PUNCT
sc-1149	119	13	rbac	rbac	PROPN
sc-1149	119	14	)	)	PUNCT
sc-1149	119	15	model	model	NOUN
sc-1149	119	16	.	.	PUNCT
sc-1149	120	1	nevertheless	nevertheless	ADV
sc-1149	120	2	,	,	PUNCT
sc-1149	120	3	various	various	ADJ
sc-1149	120	4	limitations	limitation	NOUN
sc-1149	120	5	of	of	ADP
sc-1149	120	6	rbac	rbac	PROPN
sc-1149	120	7	have	have	AUX
sc-1149	120	8	been	be	AUX
sc-1149	120	9	recognized	recognize	VERB
sc-1149	120	10	such	such	ADJ
sc-1149	120	11	as	as	ADP
sc-1149	120	12	:	:	PUNCT
sc-1149	120	13	flexibility	flexibility	NOUN
sc-1149	120	14	and	and	CCONJ
sc-1149	120	15	scalability	scalability	NOUN
sc-1149	120	16	.	.	PUNCT
sc-1149	121	1	in	in	ADP
sc-1149	121	2	this	this	DET
sc-1149	121	3	direction	direction	NOUN
sc-1149	121	4	,	,	PUNCT
sc-1149	121	5	attribute	attribute	NOUN
sc-1149	121	6	based	base	VERB
sc-1149	121	7	access	access	NOUN
sc-1149	121	8	control	control	NOUN
sc-1149	121	9	model	model	NOUN
sc-1149	121	10	(	(	PUNCT
sc-1149	121	11	abac	abac	ADJ
sc-1149	121	12	)	)	PUNCT
sc-1149	121	13	is	be	AUX
sc-1149	121	14	of	of	ADP
sc-1149	121	15	a	a	DET
sc-1149	121	16	great	great	ADJ
sc-1149	121	17	interest	interest	NOUN
sc-1149	121	18	.	.	PUNCT
sc-1149	122	1	abac	abac	ADJ
sc-1149	122	2	model	model	NOUN
sc-1149	123	1	[	[	X
sc-1149	123	2	9	9	NUM
sc-1149	123	3	,	,	PUNCT
sc-1149	123	4	10	10	NUM
sc-1149	123	5	]	]	PUNCT
sc-1149	123	6	overcomes	overcome	VERB
sc-1149	123	7	the	the	DET
sc-1149	123	8	limitations	limitation	NOUN
sc-1149	123	9	of	of	ADP
sc-1149	123	10	the	the	DET
sc-1149	123	11	classical	classical	ADJ
sc-1149	123	12	access	access	NOUN
sc-1149	123	13	control	control	NOUN
sc-1149	123	14	models	model	NOUN
sc-1149	123	15	(	(	PUNCT
sc-1149	123	16	i.e	i.e	X
sc-1149	123	17	,	,	PUNCT
sc-1149	123	18	acl	acl	PROPN
sc-1149	123	19	,	,	PUNCT
sc-1149	123	20	mac	mac	PROPN
sc-1149	123	21	and	and	CCONJ
sc-1149	123	22	rbac	rbac	PROPN
sc-1149	123	23	)	)	PUNCT
sc-1149	123	24	.	.	PUNCT
sc-1149	124	1	this	this	DET
sc-1149	124	2	model	model	NOUN
sc-1149	124	3	is	be	AUX
sc-1149	124	4	adaptive	adaptive	ADJ
sc-1149	124	5	and	and	CCONJ
sc-1149	124	6	flexible	flexible	ADJ
sc-1149	124	7	.	.	PUNCT
sc-1149	125	1	abac	abac	PROPN
sc-1149	125	2	is	be	AUX
sc-1149	125	3	more	more	ADV
sc-1149	125	4	suitable	suitable	ADJ
sc-1149	125	5	to	to	PART
sc-1149	125	6	describe	describe	VERB
sc-1149	125	7	complex	complex	ADJ
sc-1149	125	8	,	,	PUNCT
sc-1149	125	9	fine	fine	ADV
sc-1149	125	10	-	-	PUNCT
sc-1149	125	11	grained	grain	VERB
sc-1149	125	12	access	access	NOUN
sc-1149	125	13	control	control	NOUN
sc-1149	125	14	semantics	semantic	NOUN
sc-1149	125	15	,	,	PUNCT
sc-1149	125	16	which	which	PRON
sc-1149	125	17	is	be	AUX
sc-1149	125	18	especially	especially	ADV
sc-1149	125	19	needed	need	VERB
sc-1149	125	20	for	for	ADP
sc-1149	125	21	collaborative	collaborative	ADJ
sc-1149	125	22	environments	environment	NOUN
sc-1149	125	23	.	.	PUNCT
sc-1149	126	1	there	there	PRON
sc-1149	126	2	have	have	AUX
sc-1149	126	3	been	be	AUX
sc-1149	126	4	few	few	ADJ
sc-1149	126	5	works	work	NOUN
sc-1149	126	6	that	that	PRON
sc-1149	126	7	used	use	VERB
sc-1149	126	8	abac	abac	ADJ
sc-1149	126	9	in	in	ADP
sc-1149	126	10	multitenant	multitenant	ADJ
sc-1149	126	11	environment	environment	NOUN
sc-1149	126	12	.	.	PUNCT
sc-1149	127	1	the	the	DET
sc-1149	127	2	multi	multi	ADJ
sc-1149	127	3	-	-	ADJ
sc-1149	127	4	tenant	tenant	ADJ
sc-1149	127	5	attribute	attribute	NOUN
sc-1149	127	6	-	-	PUNCT
sc-1149	127	7	based	base	VERB
sc-1149	127	8	access	access	NOUN
sc-1149	127	9	control	control	NOUN
sc-1149	127	10	model	model	NOUN
sc-1149	127	11	(	(	PUNCT
sc-1149	127	12	mt	mt	PROPN
sc-1149	127	13	-	-	PUNCT
sc-1149	127	14	abac)[11	abac)[11	PROPN
sc-1149	127	15	]	]	PUNCT
sc-1149	127	16	presents	present	VERB
sc-1149	127	17	model	model	NOUN
sc-1149	127	18	to	to	PART
sc-1149	127	19	enable	enable	VERB
sc-1149	127	20	collaboration	collaboration	NOUN
sc-1149	127	21	between	between	ADP
sc-1149	127	22	tenants	tenant	NOUN
sc-1149	127	23	in	in	ADP
sc-1149	127	24	the	the	DET
sc-1149	127	25	cloud	cloud	NOUN
sc-1149	127	26	.	.	PUNCT
sc-1149	128	1	this	this	DET
sc-1149	128	2	model	model	NOUN
sc-1149	128	3	is	be	AUX
sc-1149	128	4	based	base	VERB
sc-1149	128	5	on	on	ADP
sc-1149	128	6	a	a	DET
sc-1149	128	7	decentralized	decentralized	ADJ
sc-1149	128	8	approach	approach	NOUN
sc-1149	128	9	and	and	CCONJ
sc-1149	128	10	supports	support	VERB
sc-1149	128	11	cross	cross	ADJ
sc-1149	128	12	-	-	ADJ
sc-1149	128	13	tenant	tenant	ADJ
sc-1149	128	14	attribute	attribute	NOUN
sc-1149	128	15	assignment	assignment	NOUN
sc-1149	128	16	.	.	PUNCT
sc-1149	129	1	however	however	ADV
sc-1149	129	2	,	,	PUNCT
sc-1149	129	3	this	this	DET
sc-1149	129	4	model	model	NOUN
sc-1149	129	5	does	do	AUX
sc-1149	129	6	not	not	PART
sc-1149	129	7	support	support	VERB
sc-1149	129	8	the	the	DET
sc-1149	129	9	task	task	NOUN
sc-1149	129	10	concept	concept	NOUN
sc-1149	129	11	.	.	PUNCT
sc-1149	130	1	in	in	ADP
sc-1149	130	2	mt	mt	PROPN
sc-1149	130	3	-	-	PUNCT
sc-1149	130	4	abac	abac	ADJ
sc-1149	130	5	model	model	NOUN
sc-1149	130	6	,	,	PUNCT
sc-1149	130	7	authors	author	NOUN
sc-1149	130	8	defined	define	VERB
sc-1149	130	9	a	a	DET
sc-1149	130	10	trust	trust	NOUN
sc-1149	130	11	relationship	relationship	NOUN
sc-1149	130	12	established	establish	VERB
sc-1149	130	13	between	between	ADP
sc-1149	130	14	the	the	DET
sc-1149	130	15	truster	truster	NOUN
sc-1149	130	16	tenant	tenant	NOUN
sc-1149	130	17	and	and	CCONJ
sc-1149	130	18	the	the	DET
sc-1149	130	19	trustee	trustee	NOUN
sc-1149	130	20	tenant	tenant	NOUN
sc-1149	130	21	in	in	ADP
sc-1149	130	22	order	order	NOUN
sc-1149	130	23	to	to	PART
sc-1149	130	24	support	support	VERB
sc-1149	130	25	cross	cross	VERB
sc-1149	130	26	tenants	tenant	NOUN
sc-1149	130	27	access	access	NOUN
sc-1149	130	28	.	.	PUNCT
sc-1149	131	1	in	in	ADP
sc-1149	131	2	this	this	DET
sc-1149	131	3	relationship	relationship	NOUN
sc-1149	131	4	,	,	PUNCT
sc-1149	131	5	the	the	DET
sc-1149	131	6	trustee	trustee	NOUN
sc-1149	131	7	is	be	AUX
sc-1149	131	8	authorized	authorize	VERB
sc-1149	131	9	to	to	PART
sc-1149	131	10	assign	assign	VERB
sc-1149	131	11	values	value	NOUN
sc-1149	131	12	for	for	ADP
sc-1149	131	13	trustee	trustee	NOUN
sc-1149	131	14	’s	’s	PART
sc-1149	131	15	user	user	NOUN
sc-1149	131	16	attributes	attribute	NOUN
sc-1149	131	17	to	to	ADP
sc-1149	131	18	truster	truster	NOUN
sc-1149	131	19	’s	’s	PART
sc-1149	131	20	users	user	NOUN
sc-1149	131	21	.	.	PUNCT
sc-1149	132	1	however	however	ADV
sc-1149	132	2	,	,	PUNCT
sc-1149	132	3	before	before	ADP
sc-1149	132	4	assigning	assign	VERB
sc-1149	132	5	the	the	DET
sc-1149	132	6	users	user	NOUN
sc-1149	132	7	to	to	ADP
sc-1149	132	8	the	the	DET
sc-1149	132	9	attributes	attribute	NOUN
sc-1149	132	10	,	,	PUNCT
sc-1149	132	11	the	the	DET
sc-1149	132	12	trustee	trustee	NOUN
sc-1149	132	13	should	should	AUX
sc-1149	132	14	know	know	VERB
sc-1149	132	15	some	some	DET
sc-1149	132	16	informations	information	NOUN
sc-1149	132	17	about	about	ADP
sc-1149	132	18	truster	truster	NOUN
sc-1149	132	19	’s	’s	PART
sc-1149	132	20	users	user	NOUN
sc-1149	132	21	such	such	ADJ
sc-1149	132	22	as	as	ADP
sc-1149	132	23	their	their	PRON
sc-1149	132	24	jobs	job	NOUN
sc-1149	132	25	in	in	ADP
sc-1149	132	26	the	the	DET
sc-1149	132	27	organization	organization	NOUN
sc-1149	132	28	which	which	PRON
sc-1149	132	29	will	will	AUX
sc-1149	132	30	compromise	compromise	VERB
sc-1149	132	31	the	the	DET
sc-1149	132	32	confidentiality	confidentiality	NOUN
sc-1149	132	33	requirement	requirement	NOUN
sc-1149	132	34	.	.	PUNCT
sc-1149	133	1	moreover	moreover	ADV
sc-1149	133	2	,	,	PUNCT
sc-1149	133	3	the	the	DET
sc-1149	133	4	trustee	trustee	NOUN
sc-1149	133	5	has	have	VERB
sc-1149	133	6	the	the	DET
sc-1149	133	7	full	full	ADJ
sc-1149	133	8	control	control	NOUN
sc-1149	133	9	to	to	PART
sc-1149	133	10	assign	assign	VERB
sc-1149	133	11	the	the	DET
sc-1149	133	12	truster	truster	NOUN
sc-1149	133	13	’s	’s	PART
sc-1149	133	14	users	user	NOUN
sc-1149	133	15	to	to	ADP
sc-1149	133	16	the	the	DET
sc-1149	133	17	trustee	trustee	NOUN
sc-1149	133	18	’s	’s	PART
sc-1149	133	19	authorizations	authorization	NOUN
sc-1149	133	20	which	which	PRON
sc-1149	133	21	will	will	AUX
sc-1149	133	22	compromise	compromise	VERB
sc-1149	133	23	the	the	DET
sc-1149	133	24	autonomy	autonomy	NOUN
sc-1149	133	25	requirement	requirement	NOUN
sc-1149	133	26	.	.	PUNCT
sc-1149	134	1	therefore	therefore	ADV
sc-1149	134	2	,	,	PUNCT
sc-1149	134	3	in	in	ADP
sc-1149	134	4	this	this	DET
sc-1149	134	5	paper	paper	NOUN
sc-1149	134	6	,	,	PUNCT
sc-1149	134	7	we	we	PRON
sc-1149	134	8	propose	propose	VERB
sc-1149	134	9	c	c	NOUN
sc-1149	134	10	-	-	PUNCT
sc-1149	134	11	abac	abac	ADJ
sc-1149	134	12	,	,	PUNCT
sc-1149	134	13	a	a	DET
sc-1149	134	14	novel	novel	ADJ
sc-1149	134	15	abac	abac	ADJ
sc-1149	134	16	based	base	VERB
sc-1149	134	17	model	model	NOUN
sc-1149	134	18	following	follow	VERB
sc-1149	134	19	a	a	DET
sc-1149	134	20	centralized	centralized	ADJ
sc-1149	134	21	approach	approach	NOUN
sc-1149	134	22	.	.	PUNCT
sc-1149	135	1	c	c	X
sc-1149	135	2	-	-	PUNCT
sc-1149	135	3	abac	abac	ADJ
sc-1149	135	4	allows	allow	VERB
sc-1149	135	5	the	the	DET
sc-1149	135	6	collaborating	collaborate	VERB
sc-1149	135	7	tenants	tenant	NOUN
sc-1149	135	8	to	to	PART
sc-1149	135	9	specify	specify	VERB
sc-1149	135	10	the	the	DET
sc-1149	135	11	global	global	ADJ
sc-1149	135	12	policy	policy	NOUN
sc-1149	135	13	in	in	ADP
sc-1149	135	14	a	a	DET
sc-1149	135	15	specific	specific	ADJ
sc-1149	135	16	central	central	ADJ
sc-1149	135	17	point	point	NOUN
sc-1149	135	18	.	.	PUNCT
sc-1149	136	1	c	c	X
sc-1149	136	2	-	-	PUNCT
sc-1149	136	3	abac	abac	ADJ
sc-1149	136	4	supports	support	VERB
sc-1149	136	5	the	the	DET
sc-1149	136	6	concepts	concept	NOUN
sc-1149	136	7	of	of	ADP
sc-1149	136	8	task	task	NOUN
sc-1149	136	9	and	and	CCONJ
sc-1149	136	10	workflow	workflow	NOUN
sc-1149	136	11	.	.	PUNCT
sc-1149	137	1	it	it	PRON
sc-1149	137	2	ensures	ensure	VERB
sc-1149	137	3	the	the	DET
sc-1149	137	4	tenants	tenant	NOUN
sc-1149	137	5	autonomy	autonomy	NOUN
sc-1149	137	6	and	and	CCONJ
sc-1149	137	7	preserves	preserve	VERB
sc-1149	137	8	the	the	DET
sc-1149	137	9	attributes	attribute	NOUN
sc-1149	137	10	confidentiality	confidentiality	NOUN
sc-1149	137	11	of	of	ADP
sc-1149	137	12	the	the	DET
sc-1149	137	13	tenants	tenant	NOUN
sc-1149	137	14	objects	object	VERB
sc-1149	137	15	.	.	PUNCT
sc-1149	138	1	4	4	X
sc-1149	138	2	.	.	X
sc-1149	138	3	c	c	X
sc-1149	138	4	-	-	PUNCT
sc-1149	138	5	abac	abac	ADJ
sc-1149	138	6	:	:	PUNCT
sc-1149	138	7	the	the	DET
sc-1149	138	8	collaboration	collaboration	NOUN
sc-1149	138	9	abac	abac	ADJ
sc-1149	138	10	model	model	NOUN
sc-1149	138	11	in	in	ADP
sc-1149	138	12	this	this	DET
sc-1149	138	13	section	section	NOUN
sc-1149	138	14	,	,	PUNCT
sc-1149	138	15	we	we	PRON
sc-1149	138	16	present	present	VERB
sc-1149	138	17	the	the	DET
sc-1149	138	18	suggested	suggest	VERB
sc-1149	138	19	collaboration	collaboration	NOUN
sc-1149	138	20	attributes	attribute	NOUN
sc-1149	138	21	based	base	VERB
sc-1149	138	22	access	access	NOUN
sc-1149	138	23	control	control	NOUN
sc-1149	138	24	model	model	NOUN
sc-1149	138	25	:	:	PUNCT
sc-1149	138	26	c	c	X
sc-1149	138	27	-	-	PUNCT
sc-1149	138	28	abac	abac	ADJ
sc-1149	138	29	.	.	PUNCT
sc-1149	139	1	in	in	ADP
sc-1149	139	2	this	this	DET
sc-1149	139	3	section	section	NOUN
sc-1149	139	4	,	,	PUNCT
sc-1149	139	5	we	we	PRON
sc-1149	139	6	first	first	ADV
sc-1149	139	7	define	define	VERB
sc-1149	139	8	the	the	DET
sc-1149	139	9	notion	notion	NOUN
sc-1149	139	10	of	of	ADP
sc-1149	139	11	collaborative	collaborative	ADJ
sc-1149	139	12	tenant	tenant	NOUN
sc-1149	139	13	.	.	PUNCT
sc-1149	140	1	then	then	ADV
sc-1149	140	2	,	,	PUNCT
sc-1149	140	3	we	we	PRON
sc-1149	140	4	describe	describe	VERB
sc-1149	140	5	the	the	DET
sc-1149	140	6	business	business	NOUN
sc-1149	140	7	process	process	NOUN
sc-1149	140	8	for	for	ADP
sc-1149	140	9	the	the	DET
sc-1149	140	10	collaboration	collaboration	NOUN
sc-1149	140	11	.	.	PUNCT
sc-1149	141	1	after	after	ADP
sc-1149	141	2	that	that	PRON
sc-1149	141	3	,	,	PUNCT
sc-1149	141	4	we	we	PRON
sc-1149	141	5	present	present	VERB
sc-1149	141	6	the	the	DET
sc-1149	141	7	c	c	NOUN
sc-1149	141	8	-	-	PUNCT
sc-1149	141	9	abac	abac	ADJ
sc-1149	141	10	model	model	NOUN
sc-1149	141	11	definition	definition	NOUN
sc-1149	141	12	.	.	PUNCT
sc-1149	142	1	finally	finally	ADV
sc-1149	142	2	,	,	PUNCT
sc-1149	142	3	we	we	PRON
sc-1149	142	4	show	show	VERB
sc-1149	142	5	a	a	DET
sc-1149	142	6	use	use	NOUN
sc-1149	142	7	how	how	SCONJ
sc-1149	142	8	c	c	X
sc-1149	142	9	-	-	ADJ
sc-1149	142	10	abac	abac	ADJ
sc-1149	142	11	might	might	AUX
sc-1149	142	12	be	be	AUX
sc-1149	142	13	used	use	VERB
sc-1149	142	14	in	in	ADP
sc-1149	142	15	the	the	DET
sc-1149	142	16	previously	previously	ADV
sc-1149	142	17	described	describe	VERB
sc-1149	142	18	telemedicine	telemedicine	NOUN
sc-1149	142	19	use	use	NOUN
sc-1149	142	20	case	case	NOUN
sc-1149	142	21	.	.	PUNCT
sc-1149	143	1	4.1	4.1	NUM
sc-1149	143	2	.	.	PUNCT
sc-1149	144	1	a	a	DET
sc-1149	144	2	collaborative	collaborative	ADJ
sc-1149	144	3	tenant	tenant	NOUN
sc-1149	144	4	the	the	DET
sc-1149	144	5	collaborative	collaborative	ADJ
sc-1149	144	6	tenant	tenant	NOUN
sc-1149	144	7	is	be	AUX
sc-1149	144	8	the	the	DET
sc-1149	144	9	tenant	tenant	NOUN
sc-1149	144	10	responsible	responsible	ADJ
sc-1149	144	11	for	for	ADP
sc-1149	144	12	ensuring	ensure	VERB
sc-1149	144	13	the	the	DET
sc-1149	144	14	collaboration	collaboration	NOUN
sc-1149	144	15	between	between	ADP
sc-1149	144	16	multi	multi	ADJ
sc-1149	144	17	tenants	tenant	NOUN
sc-1149	144	18	.	.	PUNCT
sc-1149	145	1	it	it	PRON
sc-1149	145	2	provides	provide	VERB
sc-1149	145	3	the	the	DET
sc-1149	145	4	collaboration	collaboration	NOUN
sc-1149	145	5	as	as	ADP
sc-1149	145	6	a	a	DET
sc-1149	145	7	service	service	NOUN
sc-1149	145	8	for	for	ADP
sc-1149	145	9	the	the	DET
sc-1149	145	10	collaborating	collaborate	VERB
sc-1149	145	11	tenants	tenant	NOUN
sc-1149	145	12	.	.	PUNCT
sc-1149	146	1	this	this	DET
sc-1149	146	2	collaborative	collaborative	ADJ
sc-1149	146	3	tenant	tenant	NOUN
sc-1149	146	4	allows	allow	VERB
sc-1149	146	5	a	a	DET
sc-1149	146	6	group	group	NOUN
sc-1149	146	7	of	of	ADP
sc-1149	146	8	users	user	NOUN
sc-1149	146	9	from	from	ADP
sc-1149	146	10	different	different	ADJ
sc-1149	146	11	tenants	tenant	NOUN
sc-1149	146	12	to	to	PART
sc-1149	146	13	collaborate	collaborate	VERB
sc-1149	146	14	through	through	ADP
sc-1149	146	15	distributed	distribute	VERB
sc-1149	146	16	platforms	platform	NOUN
sc-1149	146	17	in	in	ADP
sc-1149	146	18	order	order	NOUN
sc-1149	146	19	to	to	PART
sc-1149	146	20	perform	perform	VERB
sc-1149	146	21	a	a	DET
sc-1149	146	22	common	common	ADJ
sc-1149	146	23	process	process	NOUN
sc-1149	146	24	.	.	PUNCT
sc-1149	147	1	note	note	VERB
sc-1149	147	2	that	that	SCONJ
sc-1149	147	3	each	each	DET
sc-1149	147	4	set	set	NOUN
sc-1149	147	5	of	of	ADP
sc-1149	147	6	tenants	tenant	NOUN
sc-1149	147	7	that	that	PRON
sc-1149	147	8	want	want	VERB
sc-1149	147	9	to	to	PART
sc-1149	147	10	collaborate	collaborate	VERB
sc-1149	147	11	with	with	ADP
sc-1149	147	12	each	each	DET
sc-1149	147	13	other	other	ADJ
sc-1149	147	14	should	should	AUX
sc-1149	147	15	first	first	ADV
sc-1149	147	16	create	create	VERB
sc-1149	147	17	this	this	DET
sc-1149	147	18	collaborative	collaborative	ADJ
sc-1149	147	19	tenant	tenant	NOUN
sc-1149	147	20	.	.	PUNCT
sc-1149	148	1	then	then	ADV
sc-1149	148	2	,	,	PUNCT
sc-1149	148	3	they	they	PRON
sc-1149	148	4	should	should	AUX
sc-1149	148	5	define	define	VERB
sc-1149	148	6	in	in	ADP
sc-1149	148	7	this	this	DET
sc-1149	148	8	collaborative	collaborative	ADJ
sc-1149	148	9	tenant	tenant	NOUN
sc-1149	148	10	the	the	DET
sc-1149	148	11	collaboration	collaboration	NOUN
sc-1149	148	12	process	process	NOUN
sc-1149	148	13	which	which	PRON
sc-1149	148	14	is	be	AUX
sc-1149	148	15	a	a	DET
sc-1149	148	16	workflow	workflow	NOUN
sc-1149	148	17	composed	compose	VERB
sc-1149	148	18	of	of	ADP
sc-1149	148	19	a	a	DET
sc-1149	148	20	set	set	NOUN
sc-1149	148	21	of	of	ADP
sc-1149	148	22	tasks	task	NOUN
sc-1149	148	23	,	,	PUNCT
sc-1149	148	24	each	each	DET
sc-1149	148	25	task	task	NOUN
sc-1149	148	26	will	will	AUX
sc-1149	148	27	be	be	AUX
sc-1149	148	28	performed	perform	VERB
sc-1149	148	29	by	by	ADP
sc-1149	148	30	a	a	DET
sc-1149	148	31	given	give	VERB
sc-1149	148	32	tenant	tenant	NOUN
sc-1149	148	33	and	and	CCONJ
sc-1149	148	34	a	a	DET
sc-1149	148	35	tenant	tenant	NOUN
sc-1149	148	36	may	may	AUX
sc-1149	148	37	achieve	achieve	VERB
sc-1149	148	38	one	one	NUM
sc-1149	148	39	or	or	CCONJ
sc-1149	148	40	more	more	ADJ
sc-1149	148	41	tasks	task	NOUN
sc-1149	148	42	.	.	PUNCT
sc-1149	149	1	for	for	ADP
sc-1149	149	2	instance	instance	NOUN
sc-1149	149	3	as	as	SCONJ
sc-1149	149	4	shown	show	VERB
sc-1149	149	5	in	in	ADP
sc-1149	149	6	figure	figure	NOUN
sc-1149	149	7	2	2	NUM
sc-1149	149	8	,	,	PUNCT
sc-1149	149	9	the	the	DET
sc-1149	149	10	tenants	tenant	NOUN
sc-1149	149	11	sh	sh	INTJ
sc-1149	149	12	,	,	PUNCT
sc-1149	149	13	ems	ems	PROPN
sc-1149	149	14	and	and	CCONJ
sc-1149	149	15	hh	hh	PROPN
sc-1149	149	16	are	be	AUX
sc-1149	149	17	three	three	NUM
sc-1149	149	18	collaborating	collaborate	VERB
sc-1149	149	19	tenants	tenant	NOUN
sc-1149	149	20	using	use	VERB
sc-1149	149	21	the	the	DET
sc-1149	149	22	collaborative	collaborative	ADJ
sc-1149	149	23	tenant	tenant	NOUN
sc-1149	149	24	that	that	PRON
sc-1149	149	25	provides	provide	VERB
sc-1149	149	26	the	the	DET
sc-1149	149	27	collaboration	collaboration	NOUN
sc-1149	149	28	as	as	ADP
sc-1149	149	29	a	a	DET
sc-1149	149	30	service	service	NOUN
sc-1149	149	31	.	.	PUNCT
sc-1149	150	1	figure	figure	NOUN
sc-1149	150	2	2	2	NUM
sc-1149	150	3	.	.	PUNCT
sc-1149	150	4	collaboration	collaboration	NOUN
sc-1149	150	5	as	as	ADP
sc-1149	150	6	a	a	DET
sc-1149	150	7	service	service	NOUN
sc-1149	150	8	(	(	PUNCT
sc-1149	150	9	caas	caas	NOUN
sc-1149	150	10	)	)	PUNCT
sc-1149	150	11	4	4	NUM
sc-1149	150	12	eai	eai	NOUN
sc-1149	150	13	endorsed	endorse	VERB
sc-1149	150	14	transactions	transaction	NOUN
sc-1149	150	15	on	on	ADP
sc-1149	150	16	smart	smart	ADJ
sc-1149	150	17	cities	city	NOUN
sc-1149	150	18	02	02	NUM
sc-1149	150	19	2018	2018	NUM
sc-1149	150	20	06	06	NUM
sc-1149	150	21	2018	2018	NUM
sc-1149	150	22	|	|	ADV
sc-1149	150	23	volume	volume	NOUN
sc-1149	150	24	2	2	NUM
sc-1149	150	25	|	|	ADV
sc-1149	150	26	issue	issue	VERB
sc-1149	150	27	8	8	NUM
sc-1149	150	28	|	|	ADV
sc-1149	150	29	e3	e3	VERB
sc-1149	150	30	c	c	NOUN
sc-1149	150	31	-	-	PUNCT
sc-1149	150	32	abac	abac	ADJ
sc-1149	150	33	:	:	PUNCT
sc-1149	150	34	an	an	DET
sc-1149	150	35	abac	abac	ADJ
sc-1149	150	36	based	base	VERB
sc-1149	150	37	model	model	NOUN
sc-1149	150	38	for	for	ADP
sc-1149	150	39	collaboration	collaboration	NOUN
sc-1149	150	40	in	in	ADP
sc-1149	150	41	multi	multi	ADJ
sc-1149	150	42	-	-	ADJ
sc-1149	150	43	tenant	tenant	ADJ
sc-1149	150	44	environment	environment	NOUN
sc-1149	150	45	figure	figure	NOUN
sc-1149	150	46	3	3	NUM
sc-1149	150	47	.	.	PUNCT
sc-1149	151	1	a	a	DET
sc-1149	151	2	collaboration	collaboration	NOUN
sc-1149	151	3	workflow	workflow	NOUN
sc-1149	151	4	4.2	4.2	NUM
sc-1149	151	5	.	.	PUNCT
sc-1149	152	1	a	a	DET
sc-1149	152	2	business	business	NOUN
sc-1149	152	3	process	process	NOUN
sc-1149	152	4	in	in	ADP
sc-1149	152	5	our	our	PRON
sc-1149	152	6	approach	approach	NOUN
sc-1149	152	7	,	,	PUNCT
sc-1149	152	8	each	each	DET
sc-1149	152	9	collaboration	collaboration	NOUN
sc-1149	152	10	is	be	AUX
sc-1149	152	11	specified	specify	VERB
sc-1149	152	12	as	as	ADP
sc-1149	152	13	a	a	DET
sc-1149	152	14	business	business	NOUN
sc-1149	152	15	process	process	NOUN
sc-1149	152	16	that	that	PRON
sc-1149	152	17	is	be	AUX
sc-1149	152	18	defined	define	VERB
sc-1149	152	19	as	as	ADP
sc-1149	152	20	a	a	DET
sc-1149	152	21	set	set	NOUN
sc-1149	152	22	of	of	ADP
sc-1149	152	23	tasks	task	NOUN
sc-1149	152	24	that	that	PRON
sc-1149	152	25	are	be	AUX
sc-1149	152	26	connected	connect	VERB
sc-1149	152	27	to	to	PART
sc-1149	152	28	achieve	achieve	VERB
sc-1149	152	29	a	a	DET
sc-1149	152	30	common	common	ADJ
sc-1149	152	31	goal	goal	NOUN
sc-1149	152	32	.	.	PUNCT
sc-1149	153	1	for	for	ADP
sc-1149	153	2	example	example	NOUN
sc-1149	153	3	,	,	PUNCT
sc-1149	153	4	figure	figure	NOUN
sc-1149	153	5	3	3	NUM
sc-1149	153	6	shows	show	VERB
sc-1149	153	7	the	the	DET
sc-1149	153	8	diagnosis	diagnosis	NOUN
sc-1149	153	9	process	process	NOUN
sc-1149	153	10	related	relate	VERB
sc-1149	153	11	to	to	ADP
sc-1149	153	12	the	the	DET
sc-1149	153	13	our	our	PRON
sc-1149	153	14	use	use	NOUN
sc-1149	153	15	case	case	NOUN
sc-1149	153	16	.	.	PUNCT
sc-1149	154	1	in	in	ADP
sc-1149	154	2	this	this	DET
sc-1149	154	3	collaboration	collaboration	NOUN
sc-1149	154	4	,	,	PUNCT
sc-1149	154	5	each	each	DET
sc-1149	154	6	task	task	NOUN
sc-1149	154	7	will	will	AUX
sc-1149	154	8	be	be	AUX
sc-1149	154	9	performed	perform	VERB
sc-1149	154	10	by	by	ADP
sc-1149	154	11	a	a	DET
sc-1149	154	12	given	give	VERB
sc-1149	154	13	tenant	tenant	NOUN
sc-1149	154	14	using	use	VERB
sc-1149	154	15	some	some	DET
sc-1149	154	16	resources	resource	NOUN
sc-1149	154	17	shared	share	VERB
sc-1149	154	18	by	by	ADP
sc-1149	154	19	others	other	NOUN
sc-1149	154	20	tenants	tenant	NOUN
sc-1149	154	21	.	.	PUNCT
sc-1149	155	1	as	as	SCONJ
sc-1149	155	2	shown	show	VERB
sc-1149	155	3	in	in	ADP
sc-1149	155	4	the	the	DET
sc-1149	155	5	tasks	task	NOUN
sc-1149	155	6	assignment	assignment	NOUN
sc-1149	155	7	(	(	PUNCT
sc-1149	155	8	figure	figure	NOUN
sc-1149	155	9	4	4	NUM
sc-1149	155	10	)	)	PUNCT
sc-1149	155	11	,	,	PUNCT
sc-1149	155	12	the	the	DET
sc-1149	155	13	tenant	tenant	NOUN
sc-1149	155	14	sh	sh	PROPN
sc-1149	155	15	is	be	AUX
sc-1149	155	16	responsible	responsible	ADJ
sc-1149	155	17	to	to	PART
sc-1149	155	18	achieve	achieve	VERB
sc-1149	155	19	the	the	DET
sc-1149	155	20	task	task	NOUN
sc-1149	155	21	t	t	PROPN
sc-1149	155	22	7	7	NUM
sc-1149	155	23	.	.	PUNCT
sc-1149	156	1	moreover	moreover	ADV
sc-1149	156	2	,	,	PUNCT
sc-1149	156	3	in	in	ADP
sc-1149	156	4	order	order	NOUN
sc-1149	156	5	to	to	PART
sc-1149	156	6	perform	perform	VERB
sc-1149	156	7	this	this	DET
sc-1149	156	8	task	task	NOUN
sc-1149	156	9	,	,	PUNCT
sc-1149	156	10	the	the	DET
sc-1149	156	11	tenant	tenant	NOUN
sc-1149	156	12	sh	sh	PROPN
sc-1149	156	13	needs	need	VERB
sc-1149	156	14	to	to	PART
sc-1149	156	15	access	access	VERB
sc-1149	156	16	to	to	ADP
sc-1149	156	17	the	the	DET
sc-1149	156	18	resources	resource	NOUN
sc-1149	156	19	mr	mr	PROPN
sc-1149	156	20	,	,	PUNCT
sc-1149	156	21	scan	scan	NOUN
sc-1149	156	22	and	and	CCONJ
sc-1149	156	23	video	video	NOUN
sc-1149	156	24	that	that	PRON
sc-1149	156	25	are	be	AUX
sc-1149	156	26	owned	own	VERB
sc-1149	156	27	by	by	ADP
sc-1149	156	28	the	the	DET
sc-1149	156	29	tenant	tenant	NOUN
sc-1149	156	30	hh	hh	VERB
sc-1149	156	31	.	.	PUNCT
sc-1149	157	1	in	in	ADP
sc-1149	157	2	this	this	DET
sc-1149	157	3	section	section	NOUN
sc-1149	157	4	,	,	PUNCT
sc-1149	157	5	we	we	PRON
sc-1149	157	6	present	present	VERB
sc-1149	157	7	our	our	PRON
sc-1149	157	8	core	core	ADJ
sc-1149	157	9	c	c	ADJ
sc-1149	157	10	-	-	PUNCT
sc-1149	157	11	abac	abac	ADJ
sc-1149	157	12	model	model	NOUN
sc-1149	157	13	which	which	PRON
sc-1149	157	14	is	be	AUX
sc-1149	157	15	designed	design	VERB
sc-1149	157	16	to	to	PART
sc-1149	157	17	be	be	AUX
sc-1149	157	18	suitable	suitable	ADJ
sc-1149	157	19	for	for	ADP
sc-1149	157	20	ensuring	ensure	VERB
sc-1149	157	21	access	access	NOUN
sc-1149	157	22	control	control	NOUN
sc-1149	157	23	in	in	ADP
sc-1149	157	24	collaborative	collaborative	ADJ
sc-1149	157	25	multi	multi	ADJ
sc-1149	157	26	-	-	ADJ
sc-1149	157	27	tenants	tenant	NOUN
sc-1149	157	28	environments	environment	NOUN
sc-1149	157	29	.	.	PUNCT
sc-1149	158	1	abac	abac	ADJ
sc-1149	158	2	model	model	NOUN
sc-1149	158	3	has	have	AUX
sc-1149	158	4	been	be	AUX
sc-1149	158	5	defined	define	VERB
sc-1149	158	6	in	in	ADP
sc-1149	158	7	various	various	ADJ
sc-1149	158	8	ways	way	NOUN
sc-1149	158	9	in	in	ADP
sc-1149	158	10	the	the	DET
sc-1149	158	11	literature	literature	NOUN
sc-1149	158	12	,	,	PUNCT
sc-1149	158	13	usually	usually	ADV
sc-1149	158	14	for	for	ADP
sc-1149	158	15	some	some	DET
sc-1149	158	16	specific	specific	ADJ
sc-1149	158	17	goals	goal	NOUN
sc-1149	158	18	.	.	PUNCT
sc-1149	159	1	in	in	ADP
sc-1149	159	2	our	our	PRON
sc-1149	159	3	approach	approach	NOUN
sc-1149	159	4	,	,	PUNCT
sc-1149	159	5	we	we	PRON
sc-1149	159	6	add	add	VERB
sc-1149	159	7	the	the	DET
sc-1149	159	8	tasks	task	NOUN
sc-1149	159	9	(	(	PUNCT
sc-1149	159	10	t	t	NOUN
sc-1149	159	11	)	)	PUNCT
sc-1149	159	12	entity	entity	NOUN
sc-1149	159	13	in	in	ADP
sc-1149	159	14	addition	addition	NOUN
sc-1149	159	15	to	to	ADP
sc-1149	159	16	the	the	DET
sc-1149	159	17	users	user	NOUN
sc-1149	159	18	and	and	CCONJ
sc-1149	159	19	objects	object	NOUN
sc-1149	159	20	of	of	ADP
sc-1149	159	21	core	core	NOUN
sc-1149	159	22	abac0	abac0	PROPN
sc-1149	159	23	.	.	PUNCT
sc-1149	160	1	the	the	DET
sc-1149	160	2	task	task	NOUN
sc-1149	160	3	is	be	AUX
sc-1149	160	4	a	a	DET
sc-1149	160	5	fundamental	fundamental	ADJ
sc-1149	160	6	unit	unit	NOUN
sc-1149	160	7	of	of	ADP
sc-1149	160	8	business	business	NOUN
sc-1149	160	9	work	work	NOUN
sc-1149	160	10	or	or	CCONJ
sc-1149	160	11	business	business	NOUN
sc-1149	160	12	activity	activity	NOUN
sc-1149	160	13	.	.	PUNCT
sc-1149	161	1	tasks	task	NOUN
sc-1149	161	2	are	be	AUX
sc-1149	161	3	assigned	assign	VERB
sc-1149	161	4	to	to	ADP
sc-1149	161	5	tenants	tenant	NOUN
sc-1149	161	6	according	accord	VERB
sc-1149	161	7	to	to	ADP
sc-1149	161	8	their	their	PRON
sc-1149	161	9	roles	role	NOUN
sc-1149	161	10	in	in	ADP
sc-1149	161	11	the	the	DET
sc-1149	161	12	collaboration	collaboration	NOUN
sc-1149	161	13	.	.	PUNCT
sc-1149	162	1	the	the	DET
sc-1149	162	2	task	task	NOUN
sc-1149	162	3	is	be	AUX
sc-1149	162	4	defined	define	VERB
sc-1149	162	5	using	use	VERB
sc-1149	162	6	the	the	DET
sc-1149	162	7	triple	triple	ADJ
sc-1149	162	8	(	(	PUNCT
sc-1149	162	9	task	task	NOUN
sc-1149	162	10	name	name	NOUN
sc-1149	162	11	,	,	PUNCT
sc-1149	162	12	tenant	tenant	NOUN
sc-1149	162	13	that	that	PRON
sc-1149	162	14	is	be	AUX
sc-1149	162	15	responsible	responsible	ADJ
sc-1149	162	16	to	to	PART
sc-1149	162	17	achieve	achieve	VERB
sc-1149	162	18	the	the	DET
sc-1149	162	19	task	task	NOUN
sc-1149	162	20	,	,	PUNCT
sc-1149	162	21	set	set	NOUN
sc-1149	162	22	of	of	ADP
sc-1149	162	23	resources	resource	NOUN
sc-1149	162	24	(	(	PUNCT
sc-1149	162	25	owned	own	VERB
sc-1149	162	26	by	by	ADP
sc-1149	162	27	others	other	NOUN
sc-1149	162	28	)	)	PUNCT
sc-1149	162	29	tenants	tenant	NOUN
sc-1149	162	30	used	use	VERB
sc-1149	162	31	for	for	ADP
sc-1149	162	32	achieving	achieve	VERB
sc-1149	162	33	the	the	DET
sc-1149	162	34	task	task	NOUN
sc-1149	162	35	)	)	PUNCT
sc-1149	162	36	.	.	PUNCT
sc-1149	163	1	for	for	ADP
sc-1149	163	2	example	example	NOUN
sc-1149	163	3	as	as	SCONJ
sc-1149	163	4	shown	show	VERB
sc-1149	163	5	in	in	ADP
sc-1149	163	6	figure	figure	NOUN
sc-1149	163	7	4	4	NUM
sc-1149	163	8	,	,	PUNCT
sc-1149	163	9	the	the	DET
sc-1149	163	10	tenant	tenant	NOUN
sc-1149	163	11	sh	sh	PROPN
sc-1149	163	12	achieves	achieve	VERB
sc-1149	163	13	the	the	DET
sc-1149	163	14	task	task	NOUN
sc-1149	163	15	t	t	PROPN
sc-1149	163	16	7	7	NUM
sc-1149	163	17	by	by	ADP
sc-1149	163	18	using	use	VERB
sc-1149	163	19	some	some	DET
sc-1149	163	20	resources	resource	NOUN
sc-1149	163	21	owned	own	VERB
sc-1149	163	22	by	by	ADP
sc-1149	163	23	the	the	DET
sc-1149	163	24	tenant	tenant	NOUN
sc-1149	163	25	hh	hh	VERB
sc-1149	163	26	.	.	PUNCT
sc-1149	164	1	in	in	ADP
sc-1149	164	2	order	order	NOUN
sc-1149	164	3	to	to	PART
sc-1149	164	4	specify	specify	VERB
sc-1149	164	5	abac	abac	ADJ
sc-1149	164	6	authorization	authorization	NOUN
sc-1149	164	7	while	while	SCONJ
sc-1149	164	8	supporting	support	VERB
sc-1149	164	9	collaboration	collaboration	NOUN
sc-1149	164	10	and	and	CCONJ
sc-1149	164	11	tasks	task	NOUN
sc-1149	164	12	requirements	requirement	NOUN
sc-1149	164	13	related	relate	VERB
sc-1149	164	14	to	to	ADP
sc-1149	164	15	multi	multi	ADJ
sc-1149	164	16	-	-	ADJ
sc-1149	164	17	tenants	tenant	NOUN
sc-1149	164	18	environments	environment	NOUN
sc-1149	164	19	,	,	PUNCT
sc-1149	164	20	we	we	PRON
sc-1149	164	21	should	should	AUX
sc-1149	164	22	use	use	VERB
sc-1149	164	23	the	the	DET
sc-1149	164	24	notation	notation	NOUN
sc-1149	164	25	illustrated	illustrate	VERB
sc-1149	164	26	in	in	ADP
sc-1149	164	27	figure	figure	NOUN
sc-1149	164	28	5	5	NUM
sc-1149	164	29	.	.	PUNCT
sc-1149	164	30	c	c	X
sc-1149	164	31	-	-	PUNCT
sc-1149	164	32	abac	abac	ADJ
sc-1149	164	33	model	model	NOUN
sc-1149	164	34	introduces	introduce	VERB
sc-1149	164	35	the	the	DET
sc-1149	164	36	task	task	NOUN
sc-1149	164	37	entity	entity	NOUN
sc-1149	164	38	to	to	ADP
sc-1149	164	39	the	the	DET
sc-1149	164	40	user	user	NOUN
sc-1149	164	41	and	and	CCONJ
sc-1149	164	42	object	object	VERB
sc-1149	164	43	entities	entity	NOUN
sc-1149	164	44	of	of	ADP
sc-1149	164	45	the	the	DET
sc-1149	164	46	abac	abac	ADJ
sc-1149	164	47	model	model	NOUN
sc-1149	164	48	.	.	PUNCT
sc-1149	165	1	in	in	ADP
sc-1149	165	2	this	this	DET
sc-1149	165	3	model	model	NOUN
sc-1149	165	4	,	,	PUNCT
sc-1149	165	5	each	each	DET
sc-1149	165	6	task	task	NOUN
sc-1149	165	7	is	be	AUX
sc-1149	165	8	defined	define	VERB
sc-1149	165	9	by	by	ADP
sc-1149	165	10	a	a	DET
sc-1149	165	11	set	set	NOUN
sc-1149	165	12	of	of	ADP
sc-1149	165	13	task	task	NOUN
sc-1149	165	14	attributes	attribute	NOUN
sc-1149	165	15	like	like	ADP
sc-1149	165	16	:	:	PUNCT
sc-1149	165	17	the	the	DET
sc-1149	165	18	task	task	NOUN
sc-1149	165	19	name	name	NOUN
sc-1149	165	20	,	,	PUNCT
sc-1149	165	21	the	the	DET
sc-1149	165	22	workflow	workflow	NOUN
sc-1149	165	23	of	of	ADP
sc-1149	165	24	the	the	DET
sc-1149	165	25	task	task	NOUN
sc-1149	165	26	,	,	PUNCT
sc-1149	165	27	previous	previous	ADJ
sc-1149	165	28	tasks	task	NOUN
sc-1149	165	29	and	and	CCONJ
sc-1149	165	30	the	the	DET
sc-1149	165	31	collaborative	collaborative	ADJ
sc-1149	165	32	session	session	NOUN
sc-1149	165	33	of	of	ADP
sc-1149	165	34	the	the	DET
sc-1149	165	35	task	task	NOUN
sc-1149	165	36	.	.	PUNCT
sc-1149	166	1	moreover	moreover	ADV
sc-1149	166	2	,	,	PUNCT
sc-1149	166	3	in	in	ADP
sc-1149	166	4	each	each	DET
sc-1149	166	5	task	task	NOUN
sc-1149	166	6	,	,	PUNCT
sc-1149	166	7	the	the	DET
sc-1149	166	8	responsible	responsible	ADJ
sc-1149	166	9	of	of	ADP
sc-1149	166	10	this	this	DET
sc-1149	166	11	task	task	NOUN
sc-1149	166	12	may	may	AUX
sc-1149	166	13	have	have	VERB
sc-1149	166	14	many	many	ADJ
sc-1149	166	15	authorizations	authorization	NOUN
sc-1149	166	16	.	.	PUNCT
sc-1149	167	1	for	for	ADP
sc-1149	167	2	example	example	NOUN
sc-1149	167	3	in	in	ADP
sc-1149	167	4	the	the	DET
sc-1149	167	5	task	task	NOUN
sc-1149	167	6	t	t	PROPN
sc-1149	167	7	7	7	NUM
sc-1149	167	8	:	:	PUNCT
sc-1149	167	9	t	t	PROPN
sc-1149	167	10	ake_a_decision	ake_a_decision	NOUN
sc-1149	167	11	,	,	PUNCT
sc-1149	167	12	a	a	DET
sc-1149	167	13	user	user	NOUN
sc-1149	167	14	from	from	ADP
sc-1149	167	15	the	the	DET
sc-1149	167	16	tenant	tenant	NOUN
sc-1149	167	17	sh	sh	PROPN
sc-1149	167	18	needs	need	NOUN
sc-1149	167	19	have	have	VERB
sc-1149	167	20	four	four	NUM
sc-1149	167	21	authorizations	authorization	NOUN
sc-1149	167	22	:	:	PUNCT
sc-1149	167	23	(	(	PUNCT
sc-1149	167	24	1	1	X
sc-1149	167	25	)	)	PUNCT
sc-1149	167	26	read	read	VERB
sc-1149	167	27	the	the	DET
sc-1149	167	28	patient	patient	ADJ
sc-1149	167	29	medical	medical	ADJ
sc-1149	167	30	record	record	NOUN
sc-1149	167	31	mr1	mr1	PROPN
sc-1149	167	32	;	;	PUNCT
sc-1149	167	33	(	(	PUNCT
sc-1149	167	34	2	2	X
sc-1149	167	35	)	)	PUNCT
sc-1149	167	36	read	read	VERB
sc-1149	167	37	the	the	DET
sc-1149	167	38	patient	patient	ADJ
sc-1149	167	39	scan	scan	ADJ
sc-1149	167	40	image	image	NOUN
sc-1149	167	41	scan1	scan1	ADV
sc-1149	167	42	;	;	PUNCT
sc-1149	167	43	(	(	PUNCT
sc-1149	167	44	3	3	X
sc-1149	167	45	)	)	PUNCT
sc-1149	167	46	read	read	VERB
sc-1149	167	47	the	the	DET
sc-1149	167	48	patient	patient	ADJ
sc-1149	167	49	video	video	NOUN
sc-1149	167	50	file	file	NOUN
sc-1149	167	51	;	;	PUNCT
sc-1149	167	52	(	(	PUNCT
sc-1149	167	53	4	4	X
sc-1149	167	54	)	)	PUNCT
sc-1149	167	55	write	write	VERB
sc-1149	167	56	the	the	DET
sc-1149	167	57	final	final	ADJ
sc-1149	167	58	decision	decision	NOUN
sc-1149	167	59	.	.	PUNCT
sc-1149	168	1	in	in	ADP
sc-1149	168	2	c	c	NOUN
sc-1149	168	3	-	-	PUNCT
sc-1149	168	4	abac	abac	ADJ
sc-1149	168	5	model	model	NOUN
sc-1149	168	6	,	,	PUNCT
sc-1149	168	7	each	each	DET
sc-1149	168	8	authorization	authorization	NOUN
sc-1149	168	9	related	relate	VERB
sc-1149	168	10	to	to	ADP
sc-1149	168	11	a	a	DET
sc-1149	168	12	given	give	VERB
sc-1149	168	13	task	task	NOUN
sc-1149	168	14	is	be	AUX
sc-1149	168	15	defined	define	VERB
sc-1149	168	16	as	as	SCONJ
sc-1149	168	17	shown	show	VERB
sc-1149	168	18	in	in	ADP
sc-1149	168	19	figure	figure	NOUN
sc-1149	168	20	2	2	NUM
sc-1149	168	21	by	by	ADP
sc-1149	168	22	:	:	PUNCT
sc-1149	168	23	(	(	PUNCT
sc-1149	168	24	1	1	X
sc-1149	168	25	)	)	PUNCT
sc-1149	168	26	set	set	NOUN
sc-1149	168	27	of	of	ADP
sc-1149	168	28	task	task	NOUN
sc-1149	168	29	attributes	attribute	NOUN
sc-1149	168	30	related	relate	VERB
sc-1149	168	31	to	to	ADP
sc-1149	168	32	this	this	DET
sc-1149	168	33	task	task	NOUN
sc-1149	168	34	;	;	PUNCT
sc-1149	168	35	(	(	PUNCT
sc-1149	168	36	2	2	X
sc-1149	168	37	)	)	PUNCT
sc-1149	168	38	set	set	NOUN
sc-1149	168	39	of	of	ADP
sc-1149	168	40	user	user	NOUN
sc-1149	168	41	attributes	attribute	NOUN
sc-1149	168	42	that	that	PRON
sc-1149	168	43	represent	represent	VERB
sc-1149	168	44	the	the	DET
sc-1149	168	45	user	user	NOUN
sc-1149	168	46	who	who	PRON
sc-1149	168	47	is	be	AUX
sc-1149	168	48	responsible	responsible	ADJ
sc-1149	168	49	to	to	PART
sc-1149	168	50	achieve	achieve	VERB
sc-1149	168	51	this	this	DET
sc-1149	168	52	task	task	NOUN
sc-1149	168	53	;	;	PUNCT
sc-1149	168	54	(	(	PUNCT
sc-1149	168	55	3	3	X
sc-1149	168	56	)	)	PUNCT
sc-1149	168	57	set	set	NOUN
sc-1149	168	58	of	of	ADP
sc-1149	168	59	object	object	NOUN
sc-1149	168	60	attributes	attribute	NOUN
sc-1149	168	61	related	relate	VERB
sc-1149	168	62	to	to	ADP
sc-1149	168	63	the	the	DET
sc-1149	168	64	resource	resource	NOUN
sc-1149	168	65	used	use	VERB
sc-1149	168	66	in	in	ADP
sc-1149	168	67	this	this	DET
sc-1149	168	68	task	task	NOUN
sc-1149	168	69	;	;	PUNCT
sc-1149	168	70	(	(	PUNCT
sc-1149	168	71	4	4	X
sc-1149	168	72	)	)	PUNCT
sc-1149	168	73	an	an	DET
sc-1149	168	74	action	action	NOUN
sc-1149	168	75	which	which	PRON
sc-1149	168	76	is	be	AUX
sc-1149	168	77	a	a	DET
sc-1149	168	78	specific	specific	ADJ
sc-1149	168	79	operation	operation	NOUN
sc-1149	168	80	on	on	ADP
sc-1149	168	81	object	object	NOUN
sc-1149	168	82	.	.	PUNCT
sc-1149	169	1	for	for	ADP
sc-1149	169	2	each	each	DET
sc-1149	169	3	task	task	NOUN
sc-1149	169	4	,	,	PUNCT
sc-1149	169	5	the	the	DET
sc-1149	169	6	user	user	NOUN
sc-1149	169	7	that	that	PRON
sc-1149	169	8	is	be	AUX
sc-1149	169	9	responsible	responsible	ADJ
sc-1149	169	10	of	of	ADP
sc-1149	169	11	the	the	DET
sc-1149	169	12	task	task	NOUN
sc-1149	169	13	should	should	AUX
sc-1149	169	14	have	have	VERB
sc-1149	169	15	many	many	ADJ
sc-1149	169	16	permissions	permission	NOUN
sc-1149	169	17	to	to	PART
sc-1149	169	18	accomplish	accomplish	VERB
sc-1149	169	19	this	this	DET
sc-1149	169	20	task	task	NOUN
sc-1149	169	21	.	.	PUNCT
sc-1149	170	1	so	so	ADV
sc-1149	170	2	each	each	DET
sc-1149	170	3	task	task	NOUN
sc-1149	170	4	is	be	AUX
sc-1149	170	5	assigned	assign	VERB
sc-1149	170	6	to	to	ADP
sc-1149	170	7	many	many	ADJ
sc-1149	170	8	permissions	permission	NOUN
sc-1149	170	9	(	(	PUNCT
sc-1149	170	10	abac	abac	ADJ
sc-1149	170	11	authorization	authorization	NOUN
sc-1149	170	12	)	)	PUNCT
sc-1149	170	13	.	.	PUNCT
sc-1149	171	1	a	a	DET
sc-1149	171	2	c	c	NOUN
sc-1149	171	3	-	-	PUNCT
sc-1149	171	4	abac	abac	ADJ
sc-1149	171	5	authorizations	authorization	NOUN
sc-1149	171	6	are	be	AUX
sc-1149	171	7	defined	define	VERB
sc-1149	171	8	using	use	VERB
sc-1149	171	9	task	task	NOUN
sc-1149	171	10	,	,	PUNCT
sc-1149	171	11	user	user	NOUN
sc-1149	171	12	,	,	PUNCT
sc-1149	171	13	and	and	CCONJ
sc-1149	171	14	object	object	VERB
sc-1149	171	15	attributes	attribute	NOUN
sc-1149	171	16	that	that	PRON
sc-1149	171	17	are	be	AUX
sc-1149	171	18	independent	independent	ADJ
sc-1149	171	19	of	of	ADP
sc-1149	171	20	one	one	NUM
sc-1149	171	21	another	another	DET
sc-1149	171	22	.	.	PUNCT
sc-1149	172	1	moreover	moreover	ADV
sc-1149	172	2	,	,	PUNCT
sc-1149	172	3	each	each	DET
sc-1149	172	4	task	task	NOUN
sc-1149	172	5	attributes	attribute	NOUN
sc-1149	172	6	have	have	VERB
sc-1149	172	7	the	the	DET
sc-1149	172	8	same	same	ADJ
sc-1149	172	9	value	value	NOUN
sc-1149	172	10	for	for	ADP
sc-1149	172	11	all	all	DET
sc-1149	172	12	c	c	NOUN
sc-1149	172	13	-	-	PUNCT
sc-1149	172	14	abac	abac	ADJ
sc-1149	172	15	authorizations	authorization	NOUN
sc-1149	172	16	related	relate	VERB
sc-1149	172	17	to	to	ADP
sc-1149	172	18	this	this	DET
sc-1149	172	19	task	task	NOUN
sc-1149	172	20	.	.	PUNCT
sc-1149	173	1	likewise	likewise	ADV
sc-1149	173	2	,	,	PUNCT
sc-1149	173	3	each	each	DET
sc-1149	173	4	user	user	NOUN
sc-1149	173	5	attributes	attribute	VERB
sc-1149	173	6	have	have	VERB
sc-1149	173	7	the	the	DET
sc-1149	173	8	same	same	ADJ
sc-1149	173	9	value	value	NOUN
sc-1149	173	10	for	for	ADP
sc-1149	173	11	all	all	DET
sc-1149	173	12	authorizations	authorization	NOUN
sc-1149	173	13	related	relate	VERB
sc-1149	173	14	to	to	ADP
sc-1149	173	15	one	one	NUM
sc-1149	173	16	task	task	NOUN
sc-1149	173	17	the	the	DET
sc-1149	173	18	fact	fact	NOUN
sc-1149	173	19	that	that	SCONJ
sc-1149	173	20	we	we	PRON
sc-1149	173	21	consider	consider	VERB
sc-1149	173	22	that	that	SCONJ
sc-1149	173	23	the	the	DET
sc-1149	173	24	user	user	NOUN
sc-1149	173	25	who	who	PRON
sc-1149	173	26	is	be	AUX
sc-1149	173	27	responsible	responsible	ADJ
sc-1149	173	28	to	to	PART
sc-1149	173	29	achieve	achieve	VERB
sc-1149	173	30	one	one	NUM
sc-1149	173	31	task	task	NOUN
sc-1149	173	32	is	be	AUX
sc-1149	173	33	authorized	authorize	VERB
sc-1149	173	34	to	to	PART
sc-1149	173	35	perform	perform	VERB
sc-1149	173	36	all	all	DET
sc-1149	173	37	actions	action	NOUN
sc-1149	173	38	related	relate	VERB
sc-1149	173	39	to	to	ADP
sc-1149	173	40	this	this	DET
sc-1149	173	41	task	task	NOUN
sc-1149	173	42	.	.	PUNCT
sc-1149	174	1	a	a	DET
sc-1149	174	2	c	c	NOUN
sc-1149	174	3	-	-	PUNCT
sc-1149	174	4	abac	abac	ADJ
sc-1149	174	5	model	model	NOUN
sc-1149	174	6	is	be	AUX
sc-1149	174	7	composed	compose	VERB
sc-1149	174	8	of	of	ADP
sc-1149	174	9	the	the	DET
sc-1149	174	10	three	three	NUM
sc-1149	174	11	basic	basic	ADJ
sc-1149	174	12	components	component	NOUN
sc-1149	174	13	:	:	PUNCT
sc-1149	174	14	users	user	NOUN
sc-1149	174	15	(	(	PUNCT
sc-1149	174	16	u	u	NOUN
sc-1149	174	17	)	)	PUNCT
sc-1149	174	18	,	,	PUNCT
sc-1149	174	19	objects	object	VERB
sc-1149	174	20	(	(	PUNCT
sc-1149	174	21	o	o	NOUN
sc-1149	174	22	)	)	PUNCT
sc-1149	174	23	,	,	PUNCT
sc-1149	174	24	and	and	CCONJ
sc-1149	174	25	tasks	task	NOUN
sc-1149	174	26	(	(	PUNCT
sc-1149	174	27	t	t	NOUN
sc-1149	174	28	)	)	PUNCT
sc-1149	174	29	.	.	PUNCT
sc-1149	175	1	in	in	ADP
sc-1149	175	2	this	this	DET
sc-1149	175	3	model	model	NOUN
sc-1149	175	4	,	,	PUNCT
sc-1149	175	5	each	each	DET
sc-1149	175	6	user	user	NOUN
sc-1149	175	7	has	have	VERB
sc-1149	175	8	an	an	DET
sc-1149	175	9	attribute	attribute	NOUN
sc-1149	175	10	uowner	uowner	NOUN
sc-1149	175	11	which	which	PRON
sc-1149	175	12	is	be	AUX
sc-1149	175	13	a	a	DET
sc-1149	175	14	many	many	ADJ
sc-1149	175	15	-	-	PUNCT
sc-1149	175	16	to	to	ADP
sc-1149	175	17	-	-	PUNCT
sc-1149	175	18	one	one	NUM
sc-1149	175	19	function	function	NOUN
sc-1149	175	20	from	from	ADP
sc-1149	175	21	users	user	NOUN
sc-1149	175	22	u	u	NOUN
sc-1149	175	23	to	to	ADP
sc-1149	175	24	tenants	tenant	NOUN
sc-1149	175	25	t	t	PROPN
sc-1149	175	26	e.	e.	PROPN
sc-1149	175	27	moreover	moreover	ADV
sc-1149	175	28	,	,	PUNCT
sc-1149	175	29	the	the	DET
sc-1149	175	30	model	model	NOUN
sc-1149	175	31	requires	require	VERB
sc-1149	175	32	each	each	DET
sc-1149	175	33	object	object	NOUN
sc-1149	175	34	to	to	PART
sc-1149	175	35	have	have	VERB
sc-1149	175	36	an	an	DET
sc-1149	175	37	attribute	attribute	NOUN
sc-1149	175	38	oowner	oowner	NOUN
sc-1149	175	39	which	which	PRON
sc-1149	175	40	is	be	AUX
sc-1149	175	41	a	a	DET
sc-1149	175	42	many	many	ADJ
sc-1149	175	43	-	-	PUNCT
sc-1149	175	44	toone	toone	NOUN
sc-1149	175	45	function	function	NOUN
sc-1149	175	46	from	from	ADP
sc-1149	175	47	objects	object	NOUN
sc-1149	175	48	o	o	NOUN
sc-1149	175	49	to	to	ADP
sc-1149	175	50	tenants	tenant	NOUN
sc-1149	175	51	t	t	PROPN
sc-1149	175	52	e.	e.	PROPN
sc-1149	175	53	further	far	ADV
sc-1149	175	54	,	,	PUNCT
sc-1149	175	55	each	each	DET
sc-1149	175	56	user	user	NOUN
sc-1149	175	57	attribute	attribute	NOUN
sc-1149	175	58	,	,	PUNCT
sc-1149	175	59	each	each	DET
sc-1149	175	60	object	object	NOUN
sc-1149	175	61	attribute	attribute	NOUN
sc-1149	175	62	and	and	CCONJ
sc-1149	175	63	each	each	DET
sc-1149	175	64	task	task	NOUN
sc-1149	175	65	attribute	attribute	NOUN
sc-1149	175	66	is	be	AUX
sc-1149	175	67	also	also	ADV
sc-1149	175	68	uniquely	uniquely	ADV
sc-1149	175	69	owned	own	VERB
sc-1149	175	70	by	by	ADP
sc-1149	175	71	a	a	DET
sc-1149	175	72	single	single	ADJ
sc-1149	175	73	tenant	tenant	NOUN
sc-1149	175	74	,	,	PUNCT
sc-1149	175	75	depicted	depict	VERB
sc-1149	175	76	respectively	respectively	ADV
sc-1149	175	77	by	by	ADP
sc-1149	175	78	the	the	DET
sc-1149	175	79	many	many	ADJ
sc-1149	175	80	atomicvalued	atomicvalue	VERB
sc-1149	175	81	functions	function	NOUN
sc-1149	175	82	uaowner	uaowner	NOUN
sc-1149	175	83	,	,	PUNCT
sc-1149	175	84	oaowner	oaowner	NOUN
sc-1149	175	85	and	and	CCONJ
sc-1149	175	86	taowner	taowner	NOUN
sc-1149	175	87	.	.	PUNCT
sc-1149	176	1	the	the	DET
sc-1149	176	2	crucial	crucial	ADJ
sc-1149	176	3	concept	concept	NOUN
sc-1149	176	4	is	be	AUX
sc-1149	176	5	that	that	SCONJ
sc-1149	176	6	each	each	DET
sc-1149	176	7	tenant	tenant	NOUN
sc-1149	176	8	is	be	AUX
sc-1149	176	9	responsible	responsible	ADJ
sc-1149	176	10	for	for	ADP
sc-1149	176	11	assigning	assign	VERB
sc-1149	176	12	values	value	NOUN
sc-1149	176	13	to	to	PART
sc-1149	176	14	attributes	attributes	VERB
sc-1149	176	15	that	that	SCONJ
sc-1149	176	16	it	it	PRON
sc-1149	176	17	owns	own	VERB
sc-1149	176	18	.	.	PUNCT
sc-1149	177	1	with	with	ADP
sc-1149	177	2	isolated	isolated	ADJ
sc-1149	177	3	tenants	tenant	NOUN
sc-1149	177	4	,	,	PUNCT
sc-1149	177	5	a	a	DET
sc-1149	177	6	user	user	NOUN
sc-1149	177	7	can	can	AUX
sc-1149	177	8	have	have	AUX
sc-1149	177	9	assigned	assign	VERB
sc-1149	177	10	values	value	NOUN
sc-1149	177	11	only	only	ADV
sc-1149	177	12	for	for	ADP
sc-1149	177	13	those	those	DET
sc-1149	177	14	attributes	attribute	NOUN
sc-1149	177	15	owned	own	VERB
sc-1149	177	16	by	by	ADP
sc-1149	177	17	the	the	DET
sc-1149	177	18	user	user	NOUN
sc-1149	177	19	’s	’s	PART
sc-1149	177	20	owning	own	VERB
sc-1149	177	21	tenant	tenant	NOUN
sc-1149	177	22	.	.	PUNCT
sc-1149	178	1	actions	action	NOUN
sc-1149	178	2	are	be	AUX
sc-1149	178	3	allowed	allow	VERB
sc-1149	178	4	operations	operation	NOUN
sc-1149	178	5	in	in	ADP
sc-1149	178	6	the	the	DET
sc-1149	178	7	system	system	NOUN
sc-1149	178	8	.	.	PUNCT
sc-1149	179	1	these	these	DET
sc-1149	179	2	operations	operation	NOUN
sc-1149	179	3	typically	typically	ADV
sc-1149	179	4	include	include	VERB
sc-1149	179	5	create	create	NOUN
sc-1149	179	6	,	,	PUNCT
sc-1149	179	7	read	read	VERB
sc-1149	179	8	,	,	PUNCT
sc-1149	179	9	update	update	NOUN
sc-1149	179	10	and	and	CCONJ
sc-1149	179	11	delete	delete	NOUN
sc-1149	179	12	.	.	PUNCT
sc-1149	180	1	we	we	PRON
sc-1149	180	2	use	use	VERB
sc-1149	180	3	the	the	DET
sc-1149	180	4	terms	term	NOUN
sc-1149	180	5	actions	action	NOUN
sc-1149	180	6	and	and	CCONJ
sc-1149	180	7	operations	operation	NOUN
sc-1149	180	8	interchangeably	interchangeably	ADV
sc-1149	180	9	.	.	PUNCT
sc-1149	181	1	an	an	DET
sc-1149	181	2	action	action	NOUN
sc-1149	181	3	is	be	AUX
sc-1149	181	4	applied	apply	VERB
sc-1149	181	5	to	to	ADP
sc-1149	181	6	an	an	DET
sc-1149	181	7	object	object	NOUN
sc-1149	181	8	by	by	ADP
sc-1149	181	9	a	a	DET
sc-1149	181	10	user	user	NOUN
sc-1149	181	11	.	.	PUNCT
sc-1149	182	1	in	in	ADP
sc-1149	182	2	our	our	PRON
sc-1149	182	3	approach	approach	NOUN
sc-1149	182	4	,	,	PUNCT
sc-1149	182	5	a	a	DET
sc-1149	182	6	global	global	ADJ
sc-1149	182	7	c	c	ADJ
sc-1149	182	8	-	-	PUNCT
sc-1149	182	9	abac	abac	ADJ
sc-1149	182	10	authorizations	authorization	NOUN
sc-1149	182	11	for	for	ADP
sc-1149	182	12	a	a	DET
sc-1149	182	13	given	give	VERB
sc-1149	182	14	task	task	NOUN
sc-1149	182	15	of	of	ADP
sc-1149	182	16	the	the	DET
sc-1149	182	17	collaboration	collaboration	NOUN
sc-1149	182	18	includes	include	VERB
sc-1149	182	19	global	global	ADJ
sc-1149	182	20	attributes	attribute	NOUN
sc-1149	182	21	which	which	PRON
sc-1149	182	22	will	will	AUX
sc-1149	182	23	be	be	AUX
sc-1149	182	24	defined	define	VERB
sc-1149	182	25	at	at	ADP
sc-1149	182	26	the	the	DET
sc-1149	182	27	collaborative	collaborative	ADJ
sc-1149	182	28	tenant	tenant	NOUN
sc-1149	182	29	level	level	NOUN
sc-1149	182	30	.	.	PUNCT
sc-1149	183	1	such	such	ADJ
sc-1149	183	2	attributes	attribute	NOUN
sc-1149	183	3	are	be	AUX
sc-1149	183	4	the	the	DET
sc-1149	183	5	task	task	NOUN
sc-1149	183	6	attributes	attribute	NOUN
sc-1149	183	7	,	,	PUNCT
sc-1149	183	8	user	user	NOUN
sc-1149	183	9	and	and	CCONJ
sc-1149	183	10	object	object	VERB
sc-1149	183	11	attributes	attribute	NOUN
sc-1149	183	12	related	relate	VERB
sc-1149	183	13	to	to	ADP
sc-1149	183	14	the	the	DET
sc-1149	183	15	collaboration	collaboration	NOUN
sc-1149	183	16	(	(	PUNCT
sc-1149	183	17	for	for	ADP
sc-1149	183	18	instance	instance	NOUN
sc-1149	183	19	,	,	PUNCT
sc-1149	183	20	membercs(u	membercs(u	PROPN
sc-1149	183	21	):	):	PUNCT
sc-1149	183	22	member	member	NOUN
sc-1149	183	23	of	of	ADP
sc-1149	183	24	the	the	DET
sc-1149	183	25	collaborative	collaborative	ADJ
sc-1149	183	26	session	session	NOUN
sc-1149	183	27	;	;	PUNCT
sc-1149	183	28	sharedcs(o	sharedcs(o	PROPN
sc-1149	183	29	):	):	PUNCT
sc-1149	183	30	shared	share	VERB
sc-1149	183	31	in	in	ADP
sc-1149	183	32	the	the	DET
sc-1149	183	33	collaborative	collaborative	ADJ
sc-1149	183	34	session	session	NOUN
sc-1149	183	35	)	)	PUNCT
sc-1149	183	36	.	.	PUNCT
sc-1149	184	1	on	on	ADP
sc-1149	184	2	the	the	DET
sc-1149	184	3	other	other	ADJ
sc-1149	184	4	hand	hand	NOUN
sc-1149	184	5	,	,	PUNCT
sc-1149	184	6	in	in	ADP
sc-1149	184	7	this	this	DET
sc-1149	184	8	authorization	authorization	NOUN
sc-1149	184	9	,	,	PUNCT
sc-1149	184	10	the	the	DET
sc-1149	184	11	administrateur	administrateur	NOUN
sc-1149	184	12	of	of	ADP
sc-1149	184	13	the	the	DET
sc-1149	184	14	collaborative	collaborative	ADJ
sc-1149	184	15	tenant	tenant	NOUN
sc-1149	184	16	uses	use	VERB
sc-1149	184	17	the	the	DET
sc-1149	184	18	attributes	attribute	NOUN
sc-1149	184	19	related	relate	VERB
sc-1149	184	20	to	to	ADP
sc-1149	184	21	the	the	DET
sc-1149	184	22	user	user	NOUN
sc-1149	184	23	who	who	PRON
sc-1149	184	24	is	be	AUX
sc-1149	184	25	responsible	responsible	ADJ
sc-1149	184	26	5	5	NUM
sc-1149	184	27	eai	eai	NOUN
sc-1149	184	28	endorsed	endorse	VERB
sc-1149	184	29	transactions	transaction	NOUN
sc-1149	184	30	on	on	ADP
sc-1149	184	31	smart	smart	ADJ
sc-1149	184	32	cities	city	NOUN
sc-1149	184	33	02	02	NUM
sc-1149	184	34	2018	2018	NUM
sc-1149	184	35	06	06	NUM
sc-1149	184	36	2018	2018	NUM
sc-1149	184	37	|	|	ADV
sc-1149	184	38	volume	volume	NOUN
sc-1149	184	39	2	2	NUM
sc-1149	184	40	|	|	ADV
sc-1149	184	41	issue	issue	VERB
sc-1149	184	42	8	8	NUM
sc-1149	184	43	|	|	NOUN
sc-1149	184	44	e3	e3	VERB
sc-1149	184	45	m.	m.	NOUN
sc-1149	184	46	madani	madani	PROPN
sc-1149	184	47	,	,	PUNCT
sc-1149	184	48	m.	m.	NOUN
sc-1149	184	49	erradi	erradi	PROPN
sc-1149	184	50	,	,	PUNCT
sc-1149	184	51	y.	y.	PROPN
sc-1149	184	52	benkaouz	benkaouz	PROPN
sc-1149	184	53	figure	figure	VERB
sc-1149	184	54	4	4	NUM
sc-1149	184	55	.	.	PUNCT
sc-1149	185	1	tasks	task	NOUN
sc-1149	185	2	assignment	assignment	NOUN
sc-1149	185	3	figure	figure	NOUN
sc-1149	185	4	5	5	NUM
sc-1149	185	5	.	.	PUNCT
sc-1149	186	1	c	c	X
sc-1149	186	2	-	-	PUNCT
sc-1149	186	3	abac	abac	ADJ
sc-1149	186	4	authorizations	authorization	NOUN
sc-1149	186	5	for	for	ADP
sc-1149	186	6	executing	execute	VERB
sc-1149	186	7	this	this	DET
sc-1149	186	8	task	task	NOUN
sc-1149	186	9	.	.	PUNCT
sc-1149	187	1	these	these	DET
sc-1149	187	2	user	user	NOUN
sc-1149	187	3	attributes	attribute	NOUN
sc-1149	187	4	will	will	AUX
sc-1149	187	5	be	be	AUX
sc-1149	187	6	defined	define	VERB
sc-1149	187	7	by	by	ADP
sc-1149	187	8	the	the	DET
sc-1149	187	9	task	task	NOUN
sc-1149	187	10	executor	executor	NOUN
sc-1149	187	11	(	(	PUNCT
sc-1149	187	12	the	the	DET
sc-1149	187	13	tenant	tenant	NOUN
sc-1149	187	14	assigned	assign	VERB
sc-1149	187	15	for	for	ADP
sc-1149	187	16	executing	execute	VERB
sc-1149	187	17	this	this	DET
sc-1149	187	18	task	task	NOUN
sc-1149	187	19	)	)	PUNCT
sc-1149	187	20	in	in	ADP
sc-1149	187	21	a	a	DET
sc-1149	187	22	confidential	confidential	ADJ
sc-1149	187	23	,	,	PUNCT
sc-1149	187	24	autonomous	autonomous	ADJ
sc-1149	187	25	and	and	CCONJ
sc-1149	187	26	independent	independent	ADJ
sc-1149	187	27	way	way	NOUN
sc-1149	187	28	from	from	ADP
sc-1149	187	29	other	other	ADJ
sc-1149	187	30	collaborating	collaborate	VERB
sc-1149	187	31	tenants	tenant	NOUN
sc-1149	187	32	and	and	CCONJ
sc-1149	187	33	the	the	DET
sc-1149	187	34	collaborative	collaborative	ADJ
sc-1149	187	35	tenant	tenant	NOUN
sc-1149	187	36	.	.	PUNCT
sc-1149	188	1	for	for	ADP
sc-1149	188	2	this	this	DET
sc-1149	188	3	purpose	purpose	NOUN
sc-1149	188	4	,	,	PUNCT
sc-1149	188	5	we	we	PRON
sc-1149	188	6	propose	propose	VERB
sc-1149	188	7	a	a	DET
sc-1149	188	8	new	new	ADJ
sc-1149	188	9	attribute	attribute	NOUN
sc-1149	188	10	function	function	NOUN
sc-1149	188	11	assignuser	assignuser	NOUN
sc-1149	188	12	(	(	PUNCT
sc-1149	188	13	)	)	PUNCT
sc-1149	188	14	which	which	PRON
sc-1149	188	15	will	will	AUX
sc-1149	188	16	be	be	AUX
sc-1149	188	17	defined	define	VERB
sc-1149	188	18	at	at	ADP
sc-1149	188	19	the	the	DET
sc-1149	188	20	level	level	NOUN
sc-1149	188	21	of	of	ADP
sc-1149	188	22	the	the	DET
sc-1149	188	23	local	local	ADJ
sc-1149	188	24	tenant	tenant	NOUN
sc-1149	188	25	.	.	PUNCT
sc-1149	189	1	this	this	DET
sc-1149	189	2	attribute	attribute	NOUN
sc-1149	189	3	function	function	NOUN
sc-1149	189	4	is	be	AUX
sc-1149	189	5	responsible	responsible	ADJ
sc-1149	189	6	on	on	ADP
sc-1149	189	7	executing	execute	VERB
sc-1149	189	8	the	the	DET
sc-1149	189	9	task	task	NOUN
sc-1149	189	10	and	and	CCONJ
sc-1149	189	11	will	will	AUX
sc-1149	189	12	be	be	AUX
sc-1149	189	13	used	use	VERB
sc-1149	189	14	by	by	ADP
sc-1149	189	15	the	the	DET
sc-1149	189	16	collaborative	collaborative	ADJ
sc-1149	189	17	tenant	tenant	NOUN
sc-1149	189	18	at	at	ADP
sc-1149	189	19	the	the	DET
sc-1149	189	20	level	level	NOUN
sc-1149	189	21	of	of	ADP
sc-1149	189	22	the	the	DET
sc-1149	189	23	global	global	ADJ
sc-1149	189	24	autorization	autorization	NOUN
sc-1149	189	25	.	.	PUNCT
sc-1149	190	1	moreover	moreover	ADV
sc-1149	190	2	,	,	PUNCT
sc-1149	190	3	in	in	ADP
sc-1149	190	4	this	this	DET
sc-1149	190	5	authorization	authorization	NOUN
sc-1149	190	6	the	the	DET
sc-1149	190	7	administrator	administrator	NOUN
sc-1149	190	8	uses	use	VERB
sc-1149	190	9	the	the	DET
sc-1149	190	10	attributes	attribute	NOUN
sc-1149	190	11	related	relate	VERB
sc-1149	190	12	to	to	ADP
sc-1149	190	13	the	the	DET
sc-1149	190	14	object	object	NOUN
sc-1149	190	15	shared	share	VERB
sc-1149	190	16	within	within	ADP
sc-1149	190	17	the	the	DET
sc-1149	190	18	task	task	NOUN
sc-1149	190	19	.	.	PUNCT
sc-1149	191	1	similarly	similarly	ADV
sc-1149	191	2	,	,	PUNCT
sc-1149	191	3	these	these	DET
sc-1149	191	4	object	object	NOUN
sc-1149	191	5	attributes	attribute	NOUN
sc-1149	191	6	will	will	AUX
sc-1149	191	7	be	be	AUX
sc-1149	191	8	defined	define	VERB
sc-1149	191	9	by	by	ADP
sc-1149	191	10	the	the	DET
sc-1149	191	11	object	object	NOUN
sc-1149	191	12	owner	owner	NOUN
sc-1149	191	13	in	in	ADP
sc-1149	191	14	a	a	DET
sc-1149	191	15	confidential	confidential	ADJ
sc-1149	191	16	and	and	CCONJ
sc-1149	191	17	independent	independent	ADJ
sc-1149	191	18	way	way	NOUN
sc-1149	191	19	from	from	ADP
sc-1149	191	20	the	the	DET
sc-1149	191	21	other	other	ADJ
sc-1149	191	22	collaborating	collaborate	VERB
sc-1149	191	23	tenants	tenant	NOUN
sc-1149	191	24	.	.	PUNCT
sc-1149	192	1	for	for	ADP
sc-1149	192	2	this	this	DET
sc-1149	192	3	purpose	purpose	NOUN
sc-1149	192	4	,	,	PUNCT
sc-1149	192	5	we	we	PRON
sc-1149	192	6	propose	propose	VERB
sc-1149	192	7	a	a	DET
sc-1149	192	8	new	new	ADJ
sc-1149	192	9	attribute	attribute	NOUN
sc-1149	192	10	function	function	NOUN
sc-1149	192	11	usedobject	usedobject	VERB
sc-1149	192	12	(	(	PUNCT
sc-1149	192	13	)	)	PUNCT
sc-1149	192	14	which	which	PRON
sc-1149	192	15	will	will	AUX
sc-1149	192	16	be	be	AUX
sc-1149	192	17	defined	define	VERB
sc-1149	192	18	by	by	ADP
sc-1149	192	19	the	the	DET
sc-1149	192	20	object	object	NOUN
sc-1149	192	21	owner	owner	NOUN
sc-1149	192	22	and	and	CCONJ
sc-1149	192	23	will	will	AUX
sc-1149	192	24	be	be	AUX
sc-1149	192	25	used	use	VERB
sc-1149	192	26	by	by	ADP
sc-1149	192	27	the	the	DET
sc-1149	192	28	collaborative	collaborative	ADJ
sc-1149	192	29	tenant	tenant	NOUN
sc-1149	192	30	to	to	PART
sc-1149	192	31	define	define	VERB
sc-1149	192	32	the	the	DET
sc-1149	192	33	global	global	ADJ
sc-1149	192	34	autorization	autorization	NOUN
sc-1149	192	35	.	.	PUNCT
sc-1149	193	1	4.3	4.3	NUM
sc-1149	193	2	.	.	PUNCT
sc-1149	193	3	assignuser	assignuser	PROPN
sc-1149	193	4	function	function	VERB
sc-1149	193	5	assigneduser(ta	assigneduser(ta	ADV
sc-1149	193	6	:	:	PUNCT
sc-1149	193	7	ta;te	ta;te	PROPN
sc-1149	193	8	:	:	PUNCT
sc-1149	193	9	t	t	PROPN
sc-1149	193	10	e)(u	e)(u	PUNCT
sc-1149	193	11	:	:	PUNCT
sc-1149	193	12	u	u	NOUN
sc-1149	193	13	)	)	PUNCT
sc-1149	193	14	→	→	SYM
sc-1149	193	15	{	{	PUNCT
sc-1149	193	16	t	t	NOUN
sc-1149	193	17	rue;false	rue;false	PROPN
sc-1149	193	18	}	}	PUNCT
sc-1149	193	19	,	,	PUNCT
sc-1149	193	20	a	a	DET
sc-1149	193	21	boolean	boolean	ADJ
sc-1149	193	22	attribute	attribute	NOUN
sc-1149	193	23	function	function	NOUN
sc-1149	193	24	,	,	PUNCT
sc-1149	193	25	mapping	mapping	NOUN
sc-1149	193	26	user	user	NOUN
sc-1149	193	27	to	to	ADP
sc-1149	193	28	true	true	ADJ
sc-1149	193	29	or	or	CCONJ
sc-1149	193	30	false	false	ADJ
sc-1149	193	31	,	,	PUNCT
sc-1149	193	32	which	which	PRON
sc-1149	193	33	means	mean	VERB
sc-1149	193	34	that	that	SCONJ
sc-1149	193	35	the	the	DET
sc-1149	193	36	user	user	NOUN
sc-1149	193	37	attributes	attribute	VERB
sc-1149	193	38	that	that	PRON
sc-1149	193	39	represent	represent	VERB
sc-1149	193	40	the	the	DET
sc-1149	193	41	user	user	NOUN
sc-1149	193	42	who	who	PRON
sc-1149	193	43	is	be	AUX
sc-1149	193	44	responsible	responsible	ADJ
sc-1149	193	45	to	to	PART
sc-1149	193	46	achieve	achieve	VERB
sc-1149	193	47	this	this	DET
sc-1149	193	48	task	task	NOUN
sc-1149	193	49	t	t	PROPN
sc-1149	193	50	will	will	AUX
sc-1149	193	51	be	be	AUX
sc-1149	193	52	defined	define	VERB
sc-1149	193	53	by	by	ADP
sc-1149	193	54	the	the	DET
sc-1149	193	55	tenant	tenant	NOUN
sc-1149	194	1	te	te	PROPN
sc-1149	194	2	in	in	ADP
sc-1149	194	3	a	a	DET
sc-1149	194	4	confidential	confidential	ADJ
sc-1149	194	5	way	way	NOUN
sc-1149	194	6	.	.	PUNCT
sc-1149	195	1	this	this	DET
sc-1149	195	2	compound	compound	NOUN
sc-1149	195	3	attribute	attribute	NOUN
sc-1149	195	4	is	be	AUX
sc-1149	195	5	used	use	VERB
sc-1149	195	6	by	by	ADP
sc-1149	195	7	the	the	DET
sc-1149	195	8	tenant	tenant	NOUN
sc-1149	195	9	responsible	responsible	ADJ
sc-1149	195	10	of	of	ADP
sc-1149	195	11	the	the	DET
sc-1149	195	12	task	task	NOUN
sc-1149	195	13	to	to	PART
sc-1149	195	14	define	define	VERB
sc-1149	195	15	the	the	DET
sc-1149	195	16	user	user	NOUN
sc-1149	195	17	attributes	attribute	NOUN
sc-1149	195	18	of	of	ADP
sc-1149	195	19	the	the	DET
sc-1149	195	20	user	user	NOUN
sc-1149	195	21	who	who	PRON
sc-1149	195	22	will	will	AUX
sc-1149	195	23	perform	perform	VERB
sc-1149	195	24	this	this	DET
sc-1149	195	25	task	task	NOUN
sc-1149	195	26	in	in	ADP
sc-1149	195	27	the	the	DET
sc-1149	195	28	local	local	ADJ
sc-1149	195	29	policy	policy	NOUN
sc-1149	195	30	with	with	ADP
sc-1149	195	31	a	a	DET
sc-1149	195	32	confidential	confidential	ADJ
sc-1149	195	33	and	and	CCONJ
sc-1149	195	34	an	an	DET
sc-1149	195	35	autonomy	autonomy	NOUN
sc-1149	195	36	way	way	NOUN
sc-1149	195	37	.	.	PUNCT
sc-1149	196	1	for	for	ADP
sc-1149	196	2	instance	instance	NOUN
sc-1149	196	3	,	,	PUNCT
sc-1149	196	4	the	the	DET
sc-1149	196	5	compound	compound	NOUN
sc-1149	196	6	attribute	attribute	NOUN
sc-1149	196	7	assigneduser(t	assigneduser(t	NOUN
sc-1149	196	8	7;sh)(u	7;sh)(u	NUM
sc-1149	196	9	)	)	PUNCT
sc-1149	196	10	will	will	AUX
sc-1149	196	11	be	be	AUX
sc-1149	196	12	defined	define	VERB
sc-1149	196	13	by	by	ADP
sc-1149	196	14	the	the	DET
sc-1149	196	15	tenant	tenant	NOUN
sc-1149	196	16	sh	sh	INTJ
sc-1149	196	17	to	to	PART
sc-1149	196	18	specify	specify	VERB
sc-1149	196	19	the	the	DET
sc-1149	196	20	user	user	NOUN
sc-1149	196	21	attributes	attribute	NOUN
sc-1149	196	22	of	of	ADP
sc-1149	196	23	the	the	DET
sc-1149	196	24	user	user	NOUN
sc-1149	196	25	responsible	responsible	ADJ
sc-1149	196	26	of	of	ADP
sc-1149	196	27	the	the	DET
sc-1149	196	28	task	task	NOUN
sc-1149	196	29	t	t	PROPN
sc-1149	196	30	7	7	NUM
sc-1149	196	31	.	.	PUNCT
sc-1149	197	1	the	the	DET
sc-1149	197	2	indices	index	NOUN
sc-1149	197	3	used	use	VERB
sc-1149	197	4	in	in	ADP
sc-1149	197	5	this	this	DET
sc-1149	197	6	function	function	NOUN
sc-1149	197	7	are	be	AUX
sc-1149	197	8	:	:	PUNCT
sc-1149	197	9	•	•	INTJ
sc-1149	197	10	(	(	PUNCT
sc-1149	197	11	ta	ta	X
sc-1149	197	12	:	:	PUNCT
sc-1149	197	13	ta	ta	X
sc-1149	197	14	):	):	PUNCT
sc-1149	197	15	the	the	DET
sc-1149	197	16	current	current	ADJ
sc-1149	197	17	task	task	NOUN
sc-1149	197	18	(	(	PUNCT
sc-1149	197	19	the	the	DET
sc-1149	197	20	active	active	ADJ
sc-1149	197	21	task	task	NOUN
sc-1149	197	22	)	)	PUNCT
sc-1149	197	23	of	of	ADP
sc-1149	197	24	the	the	DET
sc-1149	197	25	workflow	workflow	NOUN
sc-1149	197	26	collaboration	collaboration	NOUN
sc-1149	197	27	.	.	PUNCT
sc-1149	198	1	•	•	NUM
sc-1149	198	2	(	(	PUNCT
sc-1149	198	3	te	te	PROPN
sc-1149	198	4	:	:	PUNCT
sc-1149	198	5	t	t	PROPN
sc-1149	198	6	e	e	PROPN
sc-1149	198	7	):	):	PUNCT
sc-1149	198	8	the	the	DET
sc-1149	198	9	tenant	tenant	NOUN
sc-1149	198	10	that	that	PRON
sc-1149	198	11	will	will	AUX
sc-1149	198	12	perform	perform	VERB
sc-1149	198	13	the	the	DET
sc-1149	198	14	this	this	DET
sc-1149	198	15	task	task	NOUN
sc-1149	198	16	ta	ta	PROPN
sc-1149	198	17	(	(	PUNCT
sc-1149	198	18	the	the	DET
sc-1149	198	19	task	task	NOUN
sc-1149	198	20	executor	executor	NOUN
sc-1149	198	21	)	)	PUNCT
sc-1149	198	22	.	.	PUNCT
sc-1149	199	1	•	•	NOUN
sc-1149	199	2	the	the	DET
sc-1149	199	3	couple	couple	NOUN
sc-1149	199	4	(	(	PUNCT
sc-1149	199	5	ta	ta	X
sc-1149	199	6	:	:	PUNCT
sc-1149	200	1	ta	ta	X
sc-1149	200	2	,	,	PUNCT
sc-1149	200	3	te	te	PROPN
sc-1149	200	4	:	:	PUNCT
sc-1149	200	5	t	t	PROPN
sc-1149	200	6	e	e	PROPN
sc-1149	200	7	)	)	PUNCT
sc-1149	200	8	,	,	PUNCT
sc-1149	200	9	means	mean	VERB
sc-1149	200	10	that	that	SCONJ
sc-1149	200	11	the	the	DET
sc-1149	200	12	tenant	tenant	NOUN
sc-1149	200	13	te	te	PROPN
sc-1149	200	14	is	be	AUX
sc-1149	200	15	responsible	responsible	ADJ
sc-1149	200	16	to	to	PART
sc-1149	200	17	accomplish	accomplish	VERB
sc-1149	200	18	the	the	DET
sc-1149	200	19	task	task	NOUN
sc-1149	200	20	ta	ta	PROPN
sc-1149	200	21	.	.	PROPN
sc-1149	200	22	4.4	4.4	NUM
sc-1149	200	23	.	.	PUNCT
sc-1149	201	1	usedobject	usedobject	PROPN
sc-1149	201	2	function	function	NOUN
sc-1149	201	3	usedobject(objt	usedobject(objt	PROPN
sc-1149	201	4	ype;a	ype;a	NOUN
sc-1149	201	5	:	:	PUNCT
sc-1149	201	6	a;te	a;te	NOUN
sc-1149	201	7	:	:	PUNCT
sc-1149	201	8	t	t	PROPN
sc-1149	201	9	e)(o	e)(o	PROPN
sc-1149	201	10	:	:	PUNCT
sc-1149	201	11	o)→	o)→	NOUN
sc-1149	201	12	{	{	PUNCT
sc-1149	201	13	t	t	NOUN
sc-1149	201	14	rue;false	rue;false	PROPN
sc-1149	201	15	}	}	PUNCT
sc-1149	201	16	,	,	PUNCT
sc-1149	201	17	a	a	DET
sc-1149	201	18	boolean	boolean	ADJ
sc-1149	201	19	attribute	attribute	NOUN
sc-1149	201	20	function	function	NOUN
sc-1149	201	21	,	,	PUNCT
sc-1149	201	22	mapping	mapping	NOUN
sc-1149	201	23	object	object	NOUN
sc-1149	201	24	to	to	ADP
sc-1149	201	25	boolean	boolean	ADJ
sc-1149	201	26	true	true	ADJ
sc-1149	201	27	or	or	CCONJ
sc-1149	201	28	f	f	PROPN
sc-1149	201	29	alse	alse	PROPN
sc-1149	201	30	,	,	PUNCT
sc-1149	201	31	which	which	PRON
sc-1149	201	32	means	mean	VERB
sc-1149	201	33	that	that	SCONJ
sc-1149	201	34	the	the	DET
sc-1149	201	35	object	object	NOUN
sc-1149	201	36	attributes	attribute	VERB
sc-1149	201	37	related	relate	VERB
sc-1149	201	38	to	to	ADP
sc-1149	201	39	the	the	DET
sc-1149	201	40	object	object	NOUN
sc-1149	201	41	of	of	ADP
sc-1149	201	42	the	the	DET
sc-1149	201	43	type	type	NOUN
sc-1149	201	44	objtype	objtype	NOUN
sc-1149	201	45	will	will	AUX
sc-1149	201	46	be	be	AUX
sc-1149	201	47	defined	define	VERB
sc-1149	201	48	by	by	ADP
sc-1149	201	49	the	the	DET
sc-1149	201	50	tenant	tenant	NOUN
sc-1149	201	51	te	te	PROPN
sc-1149	201	52	in	in	ADP
sc-1149	201	53	a	a	DET
sc-1149	201	54	confidential	confidential	ADJ
sc-1149	201	55	way	way	NOUN
sc-1149	201	56	.	.	PUNCT
sc-1149	202	1	this	this	DET
sc-1149	202	2	compound	compound	NOUN
sc-1149	202	3	attribute	attribute	NOUN
sc-1149	202	4	is	be	AUX
sc-1149	202	5	used	use	VERB
sc-1149	202	6	by	by	ADP
sc-1149	202	7	the	the	DET
sc-1149	202	8	tenant	tenant	NOUN
sc-1149	202	9	provider	provider	NOUN
sc-1149	202	10	of	of	ADP
sc-1149	202	11	the	the	DET
sc-1149	202	12	resource	resource	NOUN
sc-1149	202	13	to	to	PART
sc-1149	202	14	define	define	VERB
sc-1149	202	15	the	the	DET
sc-1149	202	16	object	object	NOUN
sc-1149	202	17	attributes	attribute	NOUN
sc-1149	202	18	of	of	ADP
sc-1149	202	19	this	this	DET
sc-1149	202	20	resource	resource	NOUN
sc-1149	202	21	and	and	CCONJ
sc-1149	202	22	the	the	DET
sc-1149	202	23	allowed	allow	VERB
sc-1149	202	24	action	action	NOUN
sc-1149	202	25	in	in	ADP
sc-1149	202	26	the	the	DET
sc-1149	202	27	local	local	ADJ
sc-1149	202	28	policy	policy	NOUN
sc-1149	202	29	with	with	ADP
sc-1149	202	30	a	a	DET
sc-1149	202	31	confidential	confidential	ADJ
sc-1149	202	32	and	and	CCONJ
sc-1149	202	33	an	an	DET
sc-1149	202	34	autonomy	autonomy	NOUN
sc-1149	202	35	way	way	NOUN
sc-1149	202	36	.	.	PUNCT
sc-1149	203	1	for	for	ADP
sc-1149	203	2	instance	instance	NOUN
sc-1149	203	3	,	,	PUNCT
sc-1149	203	4	the	the	DET
sc-1149	203	5	compound	compound	NOUN
sc-1149	203	6	attribute	attribute	NOUN
sc-1149	203	7	usedobject(mr;read;hh)(u	usedobject(mr;read;hh)(u	NOUN
sc-1149	203	8	)	)	PUNCT
sc-1149	203	9	will	will	AUX
sc-1149	203	10	be	be	AUX
sc-1149	203	11	defined	define	VERB
sc-1149	203	12	by	by	ADP
sc-1149	203	13	the	the	DET
sc-1149	203	14	tenant	tenant	NOUN
sc-1149	203	15	hh	hh	VERB
sc-1149	203	16	to	to	PART
sc-1149	203	17	specify	specify	VERB
sc-1149	203	18	the	the	DET
sc-1149	203	19	object	object	NOUN
sc-1149	203	20	attributes	attribute	NOUN
sc-1149	203	21	of	of	ADP
sc-1149	203	22	the	the	DET
sc-1149	203	23	object	object	NOUN
sc-1149	203	24	(	(	PUNCT
sc-1149	203	25	of	of	ADP
sc-1149	203	26	the	the	DET
sc-1149	203	27	type	type	NOUN
sc-1149	203	28	mr	mr	PROPN
sc-1149	203	29	)	)	PUNCT
sc-1149	203	30	used	use	VERB
sc-1149	203	31	in	in	ADP
sc-1149	203	32	the	the	DET
sc-1149	203	33	collaboration	collaboration	NOUN
sc-1149	203	34	.	.	PUNCT
sc-1149	204	1	the	the	DET
sc-1149	204	2	indices	index	NOUN
sc-1149	204	3	used	use	VERB
sc-1149	204	4	in	in	ADP
sc-1149	204	5	this	this	DET
sc-1149	204	6	function	function	NOUN
sc-1149	204	7	are	be	AUX
sc-1149	204	8	:	:	PUNCT
sc-1149	204	9	•	•	NUM
sc-1149	204	10	objt	objt	PROPN
sc-1149	204	11	ype	ype	PROPN
sc-1149	204	12	:	:	PUNCT
sc-1149	204	13	set	set	NOUN
sc-1149	204	14	of	of	ADP
sc-1149	204	15	objects	object	NOUN
sc-1149	204	16	that	that	PRON
sc-1149	204	17	satisfy	satisfy	VERB
sc-1149	204	18	a	a	DET
sc-1149	204	19	common	common	ADJ
sc-1149	204	20	property	property	NOUN
sc-1149	204	21	are	be	AUX
sc-1149	204	22	classified	classify	VERB
sc-1149	204	23	into	into	ADP
sc-1149	204	24	an	an	DET
sc-1149	204	25	object	object	NOUN
sc-1149	204	26	type	type	NOUN
sc-1149	204	27	.	.	PUNCT
sc-1149	205	1	•	•	NUM
sc-1149	205	2	(	(	PUNCT
sc-1149	205	3	a	a	DET
sc-1149	205	4	:	:	PUNCT
sc-1149	205	5	a	a	X
sc-1149	205	6	):	):	PUNCT
sc-1149	205	7	the	the	DET
sc-1149	205	8	action	action	NOUN
sc-1149	205	9	related	relate	VERB
sc-1149	205	10	to	to	ADP
sc-1149	205	11	the	the	DET
sc-1149	205	12	authorization	authorization	NOUN
sc-1149	205	13	.	.	PUNCT
sc-1149	206	1	•	•	NUM
sc-1149	206	2	(	(	PUNCT
sc-1149	206	3	te	te	PROPN
sc-1149	206	4	:	:	PUNCT
sc-1149	206	5	t	t	PROPN
sc-1149	206	6	e	e	PROPN
sc-1149	206	7	):	):	PUNCT
sc-1149	206	8	the	the	DET
sc-1149	206	9	tenant	tenant	NOUN
sc-1149	206	10	that	that	PRON
sc-1149	206	11	will	will	AUX
sc-1149	206	12	share	share	VERB
sc-1149	206	13	the	the	DET
sc-1149	206	14	object	object	NOUN
sc-1149	206	15	o	o	NOUN
sc-1149	206	16	in	in	ADP
sc-1149	206	17	the	the	DET
sc-1149	206	18	collaboration	collaboration	NOUN
sc-1149	206	19	.	.	PUNCT
sc-1149	207	1	6	6	NUM
sc-1149	207	2	eai	eai	PROPN
sc-1149	207	3	endorsed	endorse	VERB
sc-1149	207	4	transactions	transaction	NOUN
sc-1149	207	5	on	on	ADP
sc-1149	207	6	smart	smart	ADJ
sc-1149	207	7	cities	city	NOUN
sc-1149	207	8	02	02	NUM
sc-1149	207	9	2018	2018	NUM
sc-1149	207	10	06	06	NUM
sc-1149	207	11	2018	2018	NUM
sc-1149	207	12	|	|	ADV
sc-1149	207	13	volume	volume	NOUN
sc-1149	207	14	2	2	NUM
sc-1149	207	15	|	|	ADV
sc-1149	207	16	issue	issue	VERB
sc-1149	207	17	8	8	NUM
sc-1149	207	18	|	|	ADV
sc-1149	207	19	e3	e3	VERB
sc-1149	207	20	c	c	NOUN
sc-1149	207	21	-	-	PUNCT
sc-1149	207	22	abac	abac	ADJ
sc-1149	207	23	:	:	PUNCT
sc-1149	207	24	an	an	DET
sc-1149	207	25	abac	abac	ADJ
sc-1149	207	26	based	base	VERB
sc-1149	207	27	model	model	NOUN
sc-1149	207	28	for	for	ADP
sc-1149	207	29	collaboration	collaboration	NOUN
sc-1149	207	30	in	in	ADP
sc-1149	207	31	multi	multi	ADJ
sc-1149	207	32	-	-	ADJ
sc-1149	207	33	tenant	tenant	ADJ
sc-1149	207	34	environment	environment	NOUN
sc-1149	207	35	figure	figure	NOUN
sc-1149	207	36	6	6	NUM
sc-1149	207	37	.	.	PUNCT
sc-1149	207	38	example	example	NOUN
sc-1149	207	39	:	:	PUNCT
sc-1149	207	40	tasks	task	NOUN
sc-1149	207	41	definitions	definition	VERB
sc-1149	207	42	4.5	4.5	NUM
sc-1149	207	43	.	.	PUNCT
sc-1149	208	1	a	a	DET
sc-1149	208	2	collaboration	collaboration	NOUN
sc-1149	208	3	attributes	attribute	VERB
sc-1149	208	4	based	base	VERB
sc-1149	208	5	access	access	NOUN
sc-1149	208	6	control	control	NOUN
sc-1149	208	7	:	:	PUNCT
sc-1149	208	8	c	c	X
sc-1149	208	9	-	-	PUNCT
sc-1149	208	10	abac	abac	ADJ
sc-1149	208	11	model	model	NOUN
sc-1149	208	12	core	core	PROPN
sc-1149	208	13	c	c	NOUN
sc-1149	208	14	-	-	PUNCT
sc-1149	208	15	abac	abac	ADJ
sc-1149	208	16	is	be	AUX
sc-1149	208	17	defined	define	VERB
sc-1149	208	18	by	by	ADP
sc-1149	208	19	the	the	DET
sc-1149	208	20	basic	basic	ADJ
sc-1149	208	21	component	component	NOUN
sc-1149	208	22	sets	set	NOUN
sc-1149	208	23	,	,	PUNCT
sc-1149	208	24	functions	function	NOUN
sc-1149	208	25	and	and	CCONJ
sc-1149	208	26	authorization	authorization	NOUN
sc-1149	208	27	policy	policy	NOUN
sc-1149	208	28	language	language	NOUN
sc-1149	208	29	given	give	VERB
sc-1149	208	30	below	below	ADP
sc-1149	208	31	:	:	PUNCT
sc-1149	208	32	•	•	NUM
sc-1149	208	33	u	u	NOUN
sc-1149	208	34	,	,	PUNCT
sc-1149	208	35	o	o	PROPN
sc-1149	208	36	,	,	PUNCT
sc-1149	208	37	t	t	PROPN
sc-1149	208	38	and	and	CCONJ
sc-1149	208	39	t	t	PROPN
sc-1149	208	40	e	e	PROPN
sc-1149	208	41	represent	represent	VERB
sc-1149	208	42	finite	finite	ADJ
sc-1149	208	43	sets	set	NOUN
sc-1149	208	44	of	of	ADP
sc-1149	208	45	existing	exist	VERB
sc-1149	208	46	users	user	NOUN
sc-1149	208	47	,	,	PUNCT
sc-1149	208	48	objects	object	NOUN
sc-1149	208	49	,	,	PUNCT
sc-1149	208	50	tasks	task	NOUN
sc-1149	208	51	and	and	CCONJ
sc-1149	208	52	tenants	tenant	NOUN
sc-1149	208	53	respectively	respectively	ADV
sc-1149	208	54	.	.	PUNCT
sc-1149	209	1	•	•	NUM
sc-1149	209	2	a	a	PRON
sc-1149	209	3	represents	represent	VERB
sc-1149	209	4	a	a	DET
sc-1149	209	5	finite	finite	ADJ
sc-1149	209	6	set	set	NOUN
sc-1149	209	7	of	of	ADP
sc-1149	209	8	actions	action	NOUN
sc-1149	209	9	available	available	ADJ
sc-1149	209	10	on	on	ADP
sc-1149	209	11	objects	object	NOUN
sc-1149	209	12	.	.	PUNCT
sc-1149	210	1	typically	typically	ADV
sc-1149	210	2	a	a	PRON
sc-1149	210	3	=	=	NOUN
sc-1149	210	4	{	{	PUNCT
sc-1149	210	5	create	create	NOUN
sc-1149	210	6	;	;	PUNCT
sc-1149	210	7	read;update	read;update	NOUN
sc-1149	210	8	;	;	PUNCT
sc-1149	210	9	delete	delete	NOUN
sc-1149	210	10	}	}	PUNCT
sc-1149	210	11	.	.	PUNCT
sc-1149	211	1	•	•	NUM
sc-1149	211	2	cte	cte	NOUN
sc-1149	211	3	represents	represent	VERB
sc-1149	211	4	finete	finete	ADJ
sc-1149	211	5	set	set	NOUN
sc-1149	211	6	of	of	ADP
sc-1149	211	7	collaborative	collaborative	ADJ
sc-1149	211	8	tenants	tenant	NOUN
sc-1149	211	9	(	(	PUNCT
sc-1149	211	10	cte	cte	NOUN
sc-1149	211	11	⊆	⊆	NUM
sc-1149	211	12	t	t	NOUN
sc-1149	211	13	e	e	PROPN
sc-1149	211	14	)	)	PUNCT
sc-1149	211	15	.	.	PUNCT
sc-1149	212	1	•	•	NUM
sc-1149	212	2	ua	ua	PROPN
sc-1149	212	3	,	,	PUNCT
sc-1149	212	4	oa	oa	PROPN
sc-1149	212	5	and	and	CCONJ
sc-1149	212	6	ta	ta	PART
sc-1149	212	7	represent	represent	VERB
sc-1149	212	8	finite	finite	ADJ
sc-1149	212	9	sets	set	NOUN
sc-1149	212	10	of	of	ADP
sc-1149	212	11	user	user	NOUN
sc-1149	212	12	,	,	PUNCT
sc-1149	212	13	object	object	NOUN
sc-1149	212	14	and	and	CCONJ
sc-1149	212	15	task	task	NOUN
sc-1149	212	16	attribute	attribute	NOUN
sc-1149	212	17	functions	function	NOUN
sc-1149	212	18	respectively	respectively	ADV
sc-1149	212	19	.	.	PUNCT
sc-1149	213	1	•	•	NUM
sc-1149	213	2	for	for	SCONJ
sc-1149	213	3	each	each	DET
sc-1149	213	4	att	att	PROPN
sc-1149	213	5	∈	∈	PROPN
sc-1149	213	6	ua	ua	PROPN
sc-1149	213	7	∪oa	∪oa	NOUN
sc-1149	213	8	∪	∪	ADJ
sc-1149	213	9	ta	ta	ADP
sc-1149	213	10	,	,	PUNCT
sc-1149	213	11	range(att	range(att	NOUN
sc-1149	213	12	)	)	PUNCT
sc-1149	213	13	represents	represent	VERB
sc-1149	213	14	the	the	DET
sc-1149	213	15	attribute	attribute	NOUN
sc-1149	213	16	’s	’s	PART
sc-1149	213	17	range	range	NOUN
sc-1149	213	18	,	,	PUNCT
sc-1149	213	19	which	which	PRON
sc-1149	213	20	is	be	AUX
sc-1149	213	21	a	a	DET
sc-1149	213	22	finite	finite	ADJ
sc-1149	213	23	set	set	NOUN
sc-1149	213	24	of	of	ADP
sc-1149	213	25	atomic	atomic	ADJ
sc-1149	213	26	values	value	NOUN
sc-1149	213	27	.	.	PUNCT
sc-1149	214	1	•	•	NUM
sc-1149	214	2	attt	attt	PROPN
sc-1149	214	3	ype	ype	PROPN
sc-1149	214	4	:	:	PUNCT
sc-1149	214	5	ua	ua	PROPN
sc-1149	214	6	∪oa	∪oa	NOUN
sc-1149	214	7	∪	∪	AUX
sc-1149	214	8	ta→	ta→	PROPN
sc-1149	214	9	{	{	PUNCT
sc-1149	214	10	set	set	NOUN
sc-1149	214	11	;	;	PUNCT
sc-1149	214	12	atomic	atomic	ADJ
sc-1149	214	13	}	}	PUNCT
sc-1149	214	14	,	,	PUNCT
sc-1149	214	15	specifies	specifie	NOUN
sc-1149	214	16	attributes	attribute	VERB
sc-1149	214	17	as	as	ADP
sc-1149	214	18	set	set	NOUN
sc-1149	214	19	or	or	CCONJ
sc-1149	214	20	atomic	atomic	ADJ
sc-1149	214	21	values	value	NOUN
sc-1149	214	22	.	.	PUNCT
sc-1149	215	1	•	•	NUM
sc-1149	215	2	collabors	collabor	NOUN
sc-1149	215	3	:	:	PUNCT
sc-1149	215	4	(	(	PUNCT
sc-1149	215	5	cte	cte	NOUN
sc-1149	215	6	:	:	PUNCT
sc-1149	215	7	cte)→	cte)→	PROPN
sc-1149	215	8	t	t	PROPN
sc-1149	215	9	e	e	PROPN
sc-1149	215	10	,	,	PUNCT
sc-1149	215	11	specifies	specify	VERB
sc-1149	215	12	the	the	DET
sc-1149	215	13	tenants	tenant	NOUN
sc-1149	215	14	that	that	PRON
sc-1149	215	15	will	will	AUX
sc-1149	215	16	use	use	VERB
sc-1149	215	17	this	this	DET
sc-1149	215	18	collaborative	collaborative	ADJ
sc-1149	215	19	tenant	tenant	NOUN
sc-1149	215	20	cte	cte	PROPN
sc-1149	215	21	.	.	PROPN
sc-1149	216	1	•	•	NUM
sc-1149	216	2	each	each	DET
sc-1149	216	3	attribute	attribute	NOUN
sc-1149	216	4	function	function	NOUN
sc-1149	216	5	maps	map	VERB
sc-1149	216	6	elements	element	NOUN
sc-1149	216	7	in	in	ADP
sc-1149	216	8	u	u	NOUN
sc-1149	216	9	to	to	ADP
sc-1149	216	10	an	an	DET
sc-1149	216	11	atomic	atomic	ADJ
sc-1149	216	12	value	value	NOUN
sc-1149	216	13	or	or	CCONJ
sc-1149	216	14	a	a	DET
sc-1149	216	15	set	set	NOUN
sc-1149	216	16	–	–	PUNCT
sc-1149	217	1	∀ua	∀ua	PROPN
sc-1149	217	2	∈	∈	PROPN
sc-1149	217	3	ua	ua	PROPN
sc-1149	217	4	.	.	PROPN
sc-1149	217	5	ua	ua	PROPN
sc-1149	217	6	:	:	PUNCT
sc-1149	217	7	u	u	PROPN
sc-1149	217	8	→	→	SYM
sc-1149	217	9	range(ua	range(ua	PROPN
sc-1149	217	10	)	)	PUNCT
sc-1149	217	11	if	if	SCONJ
sc-1149	217	12	attt	attt	PROPN
sc-1149	217	13	ype(ua	ype(ua	PROPN
sc-1149	217	14	)	)	PUNCT
sc-1149	218	1	=	=	SYM
sc-1149	218	2	atomic	atomic	ADJ
sc-1149	218	3	–	–	PUNCT
sc-1149	218	4	∀ua	∀ua	PROPN
sc-1149	218	5	∈	∈	PROPN
sc-1149	218	6	ua	ua	PROPN
sc-1149	218	7	.	.	PROPN
sc-1149	218	8	ua	ua	PROPN
sc-1149	218	9	:	:	PUNCT
sc-1149	218	10	u	u	X
sc-1149	218	11	→	→	SYM
sc-1149	218	12	2range(ua	2range(ua	NUM
sc-1149	218	13	)	)	PUNCT
sc-1149	218	14	if	if	SCONJ
sc-1149	218	15	attt	attt	PROPN
sc-1149	218	16	ype(ua	ype(ua	PROPN
sc-1149	218	17	)	)	PUNCT
sc-1149	219	1	=	=	PRON
sc-1149	219	2	set	set	VERB
sc-1149	219	3	•	•	NOUN
sc-1149	219	4	each	each	DET
sc-1149	219	5	attribute	attribute	NOUN
sc-1149	219	6	function	function	NOUN
sc-1149	219	7	maps	map	VERB
sc-1149	219	8	elements	element	NOUN
sc-1149	219	9	in	in	ADP
sc-1149	219	10	o	o	NOUN
sc-1149	219	11	to	to	ADP
sc-1149	219	12	an	an	DET
sc-1149	219	13	atomic	atomic	ADJ
sc-1149	219	14	value	value	NOUN
sc-1149	219	15	or	or	CCONJ
sc-1149	219	16	a	a	DET
sc-1149	219	17	set	set	NOUN
sc-1149	219	18	–	–	PUNCT
sc-1149	219	19	∀oa	∀oa	PROPN
sc-1149	219	20	∈	∈	PROPN
sc-1149	220	1	oa	oa	INTJ
sc-1149	220	2	.	.	PUNCT
sc-1149	221	1	oa	oa	X
sc-1149	221	2	:	:	PUNCT
sc-1149	221	3	o→	o→	NUM
sc-1149	221	4	range(oa	range(oa	NOUN
sc-1149	221	5	)	)	PUNCT
sc-1149	221	6	if	if	SCONJ
sc-1149	221	7	attt	attt	PROPN
sc-1149	221	8	ype(oa	ype(oa	NOUN
sc-1149	221	9	)	)	PUNCT
sc-1149	222	1	=	=	SYM
sc-1149	222	2	atomic	atomic	ADJ
sc-1149	222	3	–	–	PUNCT
sc-1149	222	4	∀oa	∀oa	PROPN
sc-1149	222	5	∈	∈	PROPN
sc-1149	223	1	oa	oa	INTJ
sc-1149	223	2	.	.	PUNCT
sc-1149	224	1	oa	oa	PROPN
sc-1149	224	2	:	:	PUNCT
sc-1149	224	3	o→	o→	NUM
sc-1149	225	1	2range(oa	2range(oa	X
sc-1149	225	2	)	)	PUNCT
sc-1149	225	3	if	if	SCONJ
sc-1149	225	4	attt	attt	PROPN
sc-1149	225	5	ype(oa	ype(oa	NOUN
sc-1149	225	6	)	)	PUNCT
sc-1149	225	7	=	=	VERB
sc-1149	225	8	set	set	VERB
sc-1149	225	9	•	•	NOUN
sc-1149	225	10	each	each	DET
sc-1149	225	11	attribute	attribute	NOUN
sc-1149	225	12	function	function	NOUN
sc-1149	225	13	maps	map	VERB
sc-1149	225	14	elements	element	NOUN
sc-1149	225	15	in	in	ADP
sc-1149	225	16	t	t	PROPN
sc-1149	225	17	to	to	ADP
sc-1149	225	18	an	an	DET
sc-1149	225	19	atomic	atomic	ADJ
sc-1149	225	20	value	value	NOUN
sc-1149	225	21	or	or	CCONJ
sc-1149	225	22	a	a	DET
sc-1149	225	23	set	set	NOUN
sc-1149	225	24	–	–	PUNCT
sc-1149	225	25	∀ta	∀ta	PROPN
sc-1149	225	26	∈	∈	PROPN
sc-1149	226	1	ta	ta	PROPN
sc-1149	226	2	.	.	PUNCT
sc-1149	227	1	ta	ta	PROPN
sc-1149	227	2	:	:	PUNCT
sc-1149	228	1	t	t	PROPN
sc-1149	228	2	→	→	SYM
sc-1149	228	3	range(ta	range(ta	PROPN
sc-1149	228	4	)	)	PUNCT
sc-1149	228	5	if	if	SCONJ
sc-1149	228	6	attt	attt	PROPN
sc-1149	228	7	ype(ta	ype(ta	AUX
sc-1149	228	8	)	)	PUNCT
sc-1149	229	1	=	=	SYM
sc-1149	229	2	atomic	atomic	ADJ
sc-1149	229	3	–	–	PUNCT
sc-1149	229	4	∀ta	∀ta	PROPN
sc-1149	229	5	∈	∈	PROPN
sc-1149	229	6	ta	ta	PROPN
sc-1149	229	7	.	.	PUNCT
sc-1149	230	1	ta	ta	PROPN
sc-1149	230	2	:	:	PUNCT
sc-1149	231	1	t	t	PROPN
sc-1149	231	2	→	→	SYM
sc-1149	231	3	2range(ta	2range(ta	NUM
sc-1149	231	4	)	)	PUNCT
sc-1149	231	5	if	if	SCONJ
sc-1149	231	6	attt	attt	PROPN
sc-1149	231	7	ype(ta	ype(ta	AUX
sc-1149	231	8	)	)	PUNCT
sc-1149	231	9	=	=	VERB
sc-1149	231	10	set	set	VERB
sc-1149	231	11	•	•	NOUN
sc-1149	231	12	uowner	uowner	NOUN
sc-1149	231	13	:	:	PUNCT
sc-1149	231	14	(	(	PUNCT
sc-1149	231	15	u	u	NOUN
sc-1149	231	16	:	:	PUNCT
sc-1149	231	17	u	u	NOUN
sc-1149	231	18	)	)	PUNCT
sc-1149	231	19	→	→	SYM
sc-1149	231	20	t	t	PROPN
sc-1149	231	21	e	e	PROPN
sc-1149	231	22	,	,	PUNCT
sc-1149	231	23	required	require	VERB
sc-1149	231	24	attribute	attribute	NOUN
sc-1149	231	25	function	function	NOUN
sc-1149	231	26	mapping	mapping	NOUN
sc-1149	231	27	user	user	NOUN
sc-1149	231	28	u	u	NOUN
sc-1149	231	29	to	to	ADP
sc-1149	231	30	owner	owner	PROPN
sc-1149	231	31	tenant	tenant	PROPN
sc-1149	231	32	te	te	PROPN
sc-1149	231	33	.	.	PROPN
sc-1149	231	34	•	•	NUM
sc-1149	231	35	oowner	oowner	NOUN
sc-1149	231	36	:	:	PUNCT
sc-1149	231	37	(	(	PUNCT
sc-1149	231	38	o	o	NOUN
sc-1149	231	39	:	:	PUNCT
sc-1149	231	40	o)→	o)→	NOUN
sc-1149	231	41	t	t	NOUN
sc-1149	231	42	e	e	NOUN
sc-1149	231	43	,	,	PUNCT
sc-1149	231	44	required	require	VERB
sc-1149	231	45	attribute	attribute	NOUN
sc-1149	231	46	function	function	NOUN
sc-1149	231	47	mapping	mapping	NOUN
sc-1149	231	48	object	object	NOUN
sc-1149	231	49	o	o	NOUN
sc-1149	231	50	to	to	ADP
sc-1149	231	51	owner	owner	PROPN
sc-1149	231	52	tenant	tenant	PROPN
sc-1149	232	1	te	te	PROPN
sc-1149	232	2	.	.	PROPN
sc-1149	232	3	•	•	NUM
sc-1149	232	4	towner	towner	NOUN
sc-1149	232	5	:	:	PUNCT
sc-1149	232	6	(	(	PUNCT
sc-1149	232	7	t	t	NOUN
sc-1149	232	8	:	:	PUNCT
sc-1149	232	9	t	t	NOUN
sc-1149	232	10	)	)	PUNCT
sc-1149	232	11	→	→	SYM
sc-1149	232	12	t	t	PROPN
sc-1149	232	13	e	e	PROPN
sc-1149	232	14	,	,	PUNCT
sc-1149	232	15	required	require	VERB
sc-1149	232	16	attribute	attribute	NOUN
sc-1149	232	17	function	function	NOUN
sc-1149	232	18	mapping	mapping	NOUN
sc-1149	232	19	task	task	PROPN
sc-1149	232	20	t	t	PROPN
sc-1149	232	21	to	to	ADP
sc-1149	232	22	owner	owner	PROPN
sc-1149	232	23	tenant	tenant	PROPN
sc-1149	233	1	te	te	PROPN
sc-1149	233	2	.	.	PROPN
sc-1149	233	3	•	•	NUM
sc-1149	233	4	uaowner	uaowner	NOUN
sc-1149	233	5	:	:	PUNCT
sc-1149	233	6	(	(	PUNCT
sc-1149	233	7	uatt	uatt	INTJ
sc-1149	233	8	:	:	PUNCT
sc-1149	233	9	ua)→	ua)→	PROPN
sc-1149	233	10	t	t	PROPN
sc-1149	233	11	e	e	NOUN
sc-1149	233	12	,	,	PUNCT
sc-1149	233	13	meta	meta	ADJ
sc-1149	233	14	attribute	attribute	NOUN
sc-1149	233	15	function	function	NOUN
sc-1149	233	16	,	,	PUNCT
sc-1149	233	17	mapping	mapping	NOUN
sc-1149	233	18	user	user	NOUN
sc-1149	233	19	attribute	attribute	PROPN
sc-1149	233	20	ua	ua	PROPN
sc-1149	233	21	to	to	PART
sc-1149	233	22	attribute	attribute	VERB
sc-1149	233	23	owner	owner	NOUN
sc-1149	233	24	tenant	tenant	PROPN
sc-1149	233	25	te	te	PROPN
sc-1149	233	26	.	.	PROPN
sc-1149	233	27	•	•	NUM
sc-1149	233	28	oaowner	oaowner	NOUN
sc-1149	233	29	:	:	PUNCT
sc-1149	233	30	(	(	PUNCT
sc-1149	233	31	oa	oa	X
sc-1149	233	32	:	:	PUNCT
sc-1149	233	33	oa)→	oa)→	PROPN
sc-1149	233	34	t	t	PROPN
sc-1149	233	35	e	e	NOUN
sc-1149	233	36	,	,	PUNCT
sc-1149	233	37	meta	meta	ADJ
sc-1149	233	38	attribute	attribute	NOUN
sc-1149	233	39	function	function	NOUN
sc-1149	233	40	,	,	PUNCT
sc-1149	233	41	mapping	mapping	NOUN
sc-1149	233	42	object	object	NOUN
sc-1149	233	43	attribute	attribute	NOUN
sc-1149	233	44	oa	oa	INTJ
sc-1149	233	45	to	to	PART
sc-1149	233	46	attribute	attribute	VERB
sc-1149	233	47	owner	owner	NOUN
sc-1149	233	48	tenant	tenant	PROPN
sc-1149	233	49	te	te	PROPN
sc-1149	233	50	.	.	PROPN
sc-1149	233	51	•	•	NOUN
sc-1149	233	52	taowner	taowner	NOUN
sc-1149	233	53	:	:	PUNCT
sc-1149	233	54	(	(	PUNCT
sc-1149	233	55	ta	ta	X
sc-1149	233	56	:	:	PUNCT
sc-1149	233	57	ta)→	ta)→	PROPN
sc-1149	233	58	t	t	PROPN
sc-1149	233	59	e	e	NOUN
sc-1149	233	60	,	,	PUNCT
sc-1149	233	61	meta	meta	ADJ
sc-1149	233	62	attribute	attribute	NOUN
sc-1149	233	63	function	function	NOUN
sc-1149	233	64	,	,	PUNCT
sc-1149	233	65	mapping	mapping	NOUN
sc-1149	233	66	task	task	NOUN
sc-1149	233	67	attribute	attribute	NOUN
sc-1149	233	68	ta	ta	X
sc-1149	233	69	to	to	PART
sc-1149	233	70	attribute	attribute	VERB
sc-1149	233	71	owner	owner	NOUN
sc-1149	233	72	tenant	tenant	PROPN
sc-1149	233	73	te	te	PROPN
sc-1149	233	74	.	.	PROPN
sc-1149	233	75	7	7	NUM
sc-1149	233	76	eai	eai	PROPN
sc-1149	233	77	endorsed	endorse	VERB
sc-1149	233	78	transactions	transaction	NOUN
sc-1149	233	79	on	on	ADP
sc-1149	233	80	smart	smart	ADJ
sc-1149	233	81	cities	city	NOUN
sc-1149	233	82	02	02	NUM
sc-1149	233	83	2018	2018	NUM
sc-1149	233	84	06	06	NUM
sc-1149	233	85	2018	2018	NUM
sc-1149	233	86	|	|	ADV
sc-1149	233	87	volume	volume	NOUN
sc-1149	233	88	2	2	NUM
sc-1149	233	89	|	|	ADV
sc-1149	233	90	issue	issue	VERB
sc-1149	233	91	8	8	NUM
sc-1149	233	92	|	|	NOUN
sc-1149	233	93	e3	e3	VERB
sc-1149	233	94	m.	m.	NOUN
sc-1149	233	95	madani	madani	PROPN
sc-1149	233	96	,	,	PUNCT
sc-1149	233	97	m.	m.	NOUN
sc-1149	233	98	erradi	erradi	PROPN
sc-1149	233	99	,	,	PUNCT
sc-1149	233	100	y.	y.	PROPN
sc-1149	233	101	benkaouz	benkaouz	VERB
sc-1149	233	102	•	•	ADV
sc-1149	233	103	ua(u	ua(u	PUNCT
sc-1149	233	104	:	:	PUNCT
sc-1149	233	105	u	u	NOUN
sc-1149	233	106	)	)	PUNCT
sc-1149	233	107	is	be	AUX
sc-1149	233	108	defined	define	VERB
sc-1149	233	109	only	only	ADV
sc-1149	233	110	if	if	SCONJ
sc-1149	233	111	(	(	PUNCT
sc-1149	233	112	uaowner(ua	uaowner(ua	NOUN
sc-1149	233	113	)	)	PUNCT
sc-1149	233	114	=	=	SYM
sc-1149	233	115	uowner(u	uowner(u	PROPN
sc-1149	233	116	)	)	PUNCT
sc-1149	233	117	)	)	PUNCT
sc-1149	233	118	∪	∪	NOUN
sc-1149	233	119	(	(	PUNCT
sc-1149	233	120	uowner(u	uowner(u	PROPN
sc-1149	233	121	)	)	PUNCT
sc-1149	233	122	∈	∈	PROPN
sc-1149	233	123	collaborators(uaowner(ua	collaborators(uaowner(ua	PROPN
sc-1149	233	124	)	)	PUNCT
sc-1149	233	125	)	)	PUNCT
sc-1149	233	126	)	)	PUNCT
sc-1149	233	127	.	.	PUNCT
sc-1149	234	1	•	•	NUM
sc-1149	234	2	oa(o	oa(o	NUM
sc-1149	234	3	:	:	PUNCT
sc-1149	234	4	o	o	X
sc-1149	234	5	)	)	PUNCT
sc-1149	234	6	is	be	AUX
sc-1149	234	7	defined	define	VERB
sc-1149	234	8	only	only	ADV
sc-1149	234	9	if	if	SCONJ
sc-1149	234	10	(	(	PUNCT
sc-1149	234	11	oaowner(oa	oaowner(oa	NOUN
sc-1149	234	12	)	)	PUNCT
sc-1149	234	13	=	=	SYM
sc-1149	234	14	oowner(o	oowner(o	NOUN
sc-1149	234	15	)	)	PUNCT
sc-1149	234	16	)	)	PUNCT
sc-1149	234	17	∪	∪	NOUN
sc-1149	234	18	(	(	PUNCT
sc-1149	234	19	oowner(u	oowner(u	X
sc-1149	234	20	)	)	PUNCT
sc-1149	234	21	∈	∈	PROPN
sc-1149	234	22	collaborators(oaowner(oa	collaborators(oaowner(oa	PROPN
sc-1149	234	23	)	)	PUNCT
sc-1149	234	24	)	)	PUNCT
sc-1149	234	25	)	)	PUNCT
sc-1149	234	26	.	.	PUNCT
sc-1149	235	1	•	•	NUM
sc-1149	235	2	ta(t	ta(t	PUNCT
sc-1149	235	3	:	:	PUNCT
sc-1149	235	4	t	t	X
sc-1149	235	5	)	)	PUNCT
sc-1149	235	6	is	be	AUX
sc-1149	235	7	defined	define	VERB
sc-1149	235	8	only	only	ADV
sc-1149	235	9	if	if	SCONJ
sc-1149	235	10	(	(	PUNCT
sc-1149	235	11	taowner(ta	taowner(ta	NOUN
sc-1149	235	12	)	)	PUNCT
sc-1149	235	13	=	=	SYM
sc-1149	235	14	towner(o	towner(o	PROPN
sc-1149	235	15	)	)	PUNCT
sc-1149	235	16	)	)	PUNCT
sc-1149	235	17	.	.	PUNCT
sc-1149	236	1	•	•	NUM
sc-1149	236	2	assigneduser(ta	assigneduser(ta	ADV
sc-1149	236	3	:	:	PUNCT
sc-1149	236	4	ta;te	ta;te	PROPN
sc-1149	236	5	:	:	PUNCT
sc-1149	236	6	t	t	PROPN
sc-1149	236	7	e)(u	e)(u	PUNCT
sc-1149	236	8	:	:	PUNCT
sc-1149	236	9	u	u	NOUN
sc-1149	236	10	)	)	PUNCT
sc-1149	236	11	→	→	SYM
sc-1149	236	12	{	{	PUNCT
sc-1149	236	13	t	t	NOUN
sc-1149	236	14	rue;false	rue;false	PROPN
sc-1149	236	15	}	}	PUNCT
sc-1149	236	16	,	,	PUNCT
sc-1149	236	17	a	a	DET
sc-1149	236	18	boolean	boolean	ADJ
sc-1149	236	19	attribute	attribute	NOUN
sc-1149	236	20	function	function	NOUN
sc-1149	236	21	,	,	PUNCT
sc-1149	236	22	mapping	mapping	NOUN
sc-1149	236	23	user	user	NOUN
sc-1149	236	24	u	u	NOUN
sc-1149	236	25	to	to	ADP
sc-1149	236	26	true	true	ADJ
sc-1149	236	27	or	or	CCONJ
sc-1149	236	28	f	f	PROPN
sc-1149	236	29	alse	alse	PROPN
sc-1149	236	30	,	,	PUNCT
sc-1149	236	31	which	which	PRON
sc-1149	236	32	means	mean	VERB
sc-1149	236	33	that	that	SCONJ
sc-1149	236	34	the	the	DET
sc-1149	236	35	user	user	NOUN
sc-1149	236	36	attributes	attribute	VERB
sc-1149	236	37	that	that	PRON
sc-1149	236	38	represent	represent	VERB
sc-1149	236	39	the	the	DET
sc-1149	236	40	user	user	NOUN
sc-1149	236	41	who	who	PRON
sc-1149	236	42	is	be	AUX
sc-1149	236	43	responsible	responsible	ADJ
sc-1149	236	44	to	to	PART
sc-1149	236	45	achieve	achieve	VERB
sc-1149	236	46	this	this	DET
sc-1149	236	47	task	task	NOUN
sc-1149	236	48	ta	ta	PROPN
sc-1149	236	49	will	will	AUX
sc-1149	236	50	be	be	AUX
sc-1149	236	51	defined	define	VERB
sc-1149	236	52	by	by	ADP
sc-1149	236	53	the	the	DET
sc-1149	236	54	tenant	tenant	NOUN
sc-1149	236	55	te	te	PROPN
sc-1149	236	56	in	in	ADP
sc-1149	236	57	a	a	DET
sc-1149	236	58	confidential	confidential	ADJ
sc-1149	236	59	way	way	NOUN
sc-1149	236	60	.	.	PUNCT
sc-1149	237	1	•	•	NUM
sc-1149	237	2	usedobject(objt	usedobject(objt	PROPN
sc-1149	237	3	ype;a	ype;a	NOUN
sc-1149	237	4	:	:	PUNCT
sc-1149	237	5	a;te	a;te	NOUN
sc-1149	237	6	:	:	PUNCT
sc-1149	237	7	t	t	PROPN
sc-1149	237	8	e)(o	e)(o	PROPN
sc-1149	237	9	:	:	PUNCT
sc-1149	237	10	o)→	o)→	NOUN
sc-1149	237	11	{	{	PUNCT
sc-1149	237	12	t	t	NOUN
sc-1149	237	13	rue;false	rue;false	PROPN
sc-1149	237	14	}	}	PUNCT
sc-1149	237	15	,	,	PUNCT
sc-1149	237	16	a	a	DET
sc-1149	237	17	boolean	boolean	ADJ
sc-1149	237	18	attribute	attribute	NOUN
sc-1149	237	19	function	function	NOUN
sc-1149	237	20	,	,	PUNCT
sc-1149	237	21	mapping	mapping	NOUN
sc-1149	237	22	object	object	NOUN
sc-1149	237	23	o	o	NOUN
sc-1149	237	24	to	to	ADP
sc-1149	237	25	true	true	ADJ
sc-1149	237	26	or	or	CCONJ
sc-1149	237	27	f	f	PROPN
sc-1149	237	28	alse	alse	PROPN
sc-1149	237	29	,	,	PUNCT
sc-1149	237	30	which	which	PRON
sc-1149	237	31	means	mean	VERB
sc-1149	237	32	that	that	SCONJ
sc-1149	237	33	the	the	DET
sc-1149	237	34	object	object	NOUN
sc-1149	237	35	attributes	attribute	VERB
sc-1149	237	36	related	relate	VERB
sc-1149	237	37	to	to	ADP
sc-1149	237	38	the	the	DET
sc-1149	237	39	object	object	NOUN
sc-1149	237	40	of	of	ADP
sc-1149	237	41	the	the	DET
sc-1149	237	42	type	type	NOUN
sc-1149	237	43	objt	objt	NOUN
sc-1149	237	44	ype	ype	NOUN
sc-1149	237	45	will	will	AUX
sc-1149	237	46	be	be	AUX
sc-1149	237	47	defined	define	VERB
sc-1149	237	48	by	by	ADP
sc-1149	237	49	the	the	DET
sc-1149	237	50	tenant	tenant	NOUN
sc-1149	237	51	te	te	PROPN
sc-1149	237	52	in	in	ADP
sc-1149	237	53	a	a	DET
sc-1149	237	54	confidential	confidential	ADJ
sc-1149	237	55	way	way	NOUN
sc-1149	237	56	.	.	PUNCT
sc-1149	238	1	•	•	NOUN
sc-1149	238	2	an	an	DET
sc-1149	238	3	authorization	authorization	NOUN
sc-1149	238	4	that	that	PRON
sc-1149	238	5	decides	decide	VERB
sc-1149	238	6	on	on	ADP
sc-1149	238	7	whether	whether	SCONJ
sc-1149	238	8	a	a	DET
sc-1149	238	9	user	user	NOUN
sc-1149	238	10	u	u	NOUN
sc-1149	238	11	can	can	AUX
sc-1149	238	12	access	access	VERB
sc-1149	238	13	an	an	DET
sc-1149	238	14	object	object	NOUN
sc-1149	238	15	o	o	NOUN
sc-1149	238	16	in	in	ADP
sc-1149	238	17	a	a	DET
sc-1149	238	18	particular	particular	ADJ
sc-1149	238	19	task	task	NOUN
sc-1149	238	20	t	t	PROPN
sc-1149	238	21	for	for	ADP
sc-1149	238	22	the	the	DET
sc-1149	238	23	action	action	NOUN
sc-1149	238	24	a	a	PRON
sc-1149	238	25	,	,	PUNCT
sc-1149	238	26	is	be	AUX
sc-1149	238	27	a	a	DET
sc-1149	238	28	boolean	boolean	ADJ
sc-1149	238	29	function	function	NOUN
sc-1149	238	30	of	of	ADP
sc-1149	238	31	u	u	NOUN
sc-1149	238	32	,	,	PUNCT
sc-1149	238	33	o	o	NOUN
sc-1149	238	34	,	,	PUNCT
sc-1149	238	35	and	and	CCONJ
sc-1149	238	36	t	t	PROPN
sc-1149	238	37	attributes	attribute	VERB
sc-1149	238	38	:	:	PUNCT
sc-1149	238	39	rule	rule	NOUN
sc-1149	238	40	:	:	PUNCT
sc-1149	238	41	authorizationa(u	authorizationa(u	X
sc-1149	238	42	;	;	PUNCT
sc-1149	238	43	o	o	NOUN
sc-1149	238	44	;	;	PUNCT
sc-1149	238	45	t)→	t)→	PROPN
sc-1149	238	46	f	f	X
sc-1149	238	47	(	(	PUNCT
sc-1149	238	48	ua(u);oa(o	ua(u);oa(o	PROPN
sc-1149	238	49	)	)	PUNCT
sc-1149	238	50	;	;	PUNCT
sc-1149	238	51	ta(t	ta(t	X
sc-1149	238	52	)	)	PUNCT
sc-1149	238	53	)	)	PUNCT
sc-1149	238	54	,	,	PUNCT
sc-1149	238	55	with	with	ADP
sc-1149	238	56	the	the	DET
sc-1149	238	57	additional	additional	ADJ
sc-1149	238	58	required	required	ADJ
sc-1149	238	59	condition	condition	NOUN
sc-1149	238	60	that	that	SCONJ
sc-1149	238	61	(	(	PUNCT
sc-1149	238	62	uowner(u	uowner(u	PROPN
sc-1149	238	63	)	)	PUNCT
sc-1149	238	64	=	=	SYM
sc-1149	238	65	oowner(o	oowner(o	NOUN
sc-1149	238	66	)	)	PUNCT
sc-1149	238	67	=	=	SYM
sc-1149	238	68	towner(t	towner(t	NOUN
sc-1149	238	69	)	)	PUNCT
sc-1149	238	70	)	)	PUNCT
sc-1149	238	71	∪	∪	NOUN
sc-1149	238	72	(	(	PUNCT
sc-1149	238	73	uowner(u	uowner(u	ADJ
sc-1149	238	74	)	)	PUNCT
sc-1149	238	75	∈	∈	PROPN
sc-1149	238	76	collaborators(towner(t	collaborators(towner(t	NOUN
sc-1149	238	77	)	)	PUNCT
sc-1149	238	78	)	)	PUNCT
sc-1149	239	1	∩oowner(o	∩oowner(o	PROPN
sc-1149	239	2	)	)	PUNCT
sc-1149	239	3	∈	∈	PROPN
sc-1149	239	4	collaborators(towner(t	collaborators(towner(t	NOUN
sc-1149	239	5	)	)	PUNCT
sc-1149	239	6	)	)	PUNCT
sc-1149	239	7	)	)	PUNCT
sc-1149	239	8	.	.	PUNCT
sc-1149	240	1	4.6	4.6	NUM
sc-1149	240	2	.	.	PUNCT
sc-1149	240	3	example	example	NOUN
sc-1149	240	4	:	:	PUNCT
sc-1149	240	5	c	c	X
sc-1149	240	6	-	-	PUNCT
sc-1149	240	7	abac	abac	ADJ
sc-1149	240	8	authorizations	authorization	NOUN
sc-1149	240	9	let	let	VERB
sc-1149	240	10	us	we	PRON
sc-1149	240	11	consider	consider	VERB
sc-1149	240	12	a	a	DET
sc-1149	240	13	telemedicine	telemedicine	NOUN
sc-1149	240	14	scenario	scenario	NOUN
sc-1149	240	15	where	where	SCONJ
sc-1149	240	16	the	the	DET
sc-1149	240	17	school	school	NOUN
sc-1149	240	18	hospital	hospital	NOUN
sc-1149	240	19	(	(	PUNCT
sc-1149	240	20	sh	sh	PROPN
sc-1149	240	21	)	)	PUNCT
sc-1149	240	22	,	,	PUNCT
sc-1149	240	23	the	the	DET
sc-1149	240	24	emergency	emergency	NOUN
sc-1149	240	25	medical	medical	ADJ
sc-1149	240	26	services	service	NOUN
sc-1149	240	27	(	(	PUNCT
sc-1149	240	28	ems	ems	PROPN
sc-1149	240	29	)	)	PUNCT
sc-1149	240	30	,	,	PUNCT
sc-1149	240	31	and	and	CCONJ
sc-1149	240	32	the	the	DET
sc-1149	240	33	home	home	NOUN
sc-1149	240	34	hospital	hospital	NOUN
sc-1149	240	35	(	(	PUNCT
sc-1149	240	36	hh	hh	PROPN
sc-1149	240	37	)	)	PUNCT
sc-1149	240	38	are	be	AUX
sc-1149	240	39	three	three	NUM
sc-1149	240	40	collaborating	collaborate	VERB
sc-1149	240	41	organizations	organization	NOUN
sc-1149	240	42	.	.	PUNCT
sc-1149	241	1	in	in	ADP
sc-1149	241	2	this	this	DET
sc-1149	241	3	example	example	NOUN
sc-1149	241	4	,	,	PUNCT
sc-1149	241	5	we	we	PRON
sc-1149	241	6	apply	apply	VERB
sc-1149	241	7	the	the	DET
sc-1149	241	8	c	c	NOUN
sc-1149	241	9	-	-	PUNCT
sc-1149	241	10	abac	abac	ADJ
sc-1149	241	11	model	model	NOUN
sc-1149	241	12	on	on	ADP
sc-1149	241	13	the	the	DET
sc-1149	241	14	telemedicine	telemedicine	NOUN
sc-1149	241	15	use	use	NOUN
sc-1149	241	16	case	case	NOUN
sc-1149	241	17	a	a	DET
sc-1149	241	18	telemedicine	telemedicine	NOUN
sc-1149	241	19	previously	previously	ADV
sc-1149	241	20	depicted	depict	VERB
sc-1149	241	21	by	by	ADP
sc-1149	241	22	specifying	specify	VERB
sc-1149	241	23	authorizations	authorization	NOUN
sc-1149	241	24	for	for	ADP
sc-1149	241	25	the	the	DET
sc-1149	241	26	tasks	task	NOUN
sc-1149	241	27	interpret_scan	interpret_scan	NOUN
sc-1149	241	28	and	and	CCONJ
sc-1149	241	29	take_a_decision	take_a_decision	NOUN
sc-1149	241	30	as	as	SCONJ
sc-1149	241	31	shown	show	VERB
sc-1149	241	32	in	in	ADP
sc-1149	241	33	figure	figure	NOUN
sc-1149	241	34	7	7	NUM
sc-1149	241	35	.	.	PUNCT
sc-1149	241	36	first	first	ADV
sc-1149	241	37	,	,	PUNCT
sc-1149	241	38	for	for	ADP
sc-1149	241	39	each	each	DET
sc-1149	241	40	task	task	NOUN
sc-1149	241	41	we	we	PRON
sc-1149	241	42	define	define	VERB
sc-1149	241	43	a	a	DET
sc-1149	241	44	set	set	NOUN
sc-1149	241	45	of	of	ADP
sc-1149	241	46	task	task	NOUN
sc-1149	241	47	attributes	attribute	NOUN
sc-1149	241	48	,	,	PUNCT
sc-1149	241	49	set	set	NOUN
sc-1149	241	50	of	of	ADP
sc-1149	241	51	user	user	NOUN
sc-1149	241	52	attributes	attribute	NOUN
sc-1149	241	53	that	that	PRON
sc-1149	241	54	represent	represent	VERB
sc-1149	241	55	the	the	DET
sc-1149	241	56	user	user	NOUN
sc-1149	241	57	who	who	PRON
sc-1149	241	58	is	be	AUX
sc-1149	241	59	supposed	suppose	VERB
sc-1149	241	60	to	to	PART
sc-1149	241	61	achieve	achieve	VERB
sc-1149	241	62	this	this	DET
sc-1149	241	63	task	task	NOUN
sc-1149	241	64	and	and	CCONJ
sc-1149	241	65	set	set	NOUN
sc-1149	241	66	of	of	ADP
sc-1149	241	67	access	access	NOUN
sc-1149	241	68	permissions	permission	NOUN
sc-1149	241	69	related	relate	VERB
sc-1149	241	70	to	to	ADP
sc-1149	241	71	this	this	DET
sc-1149	241	72	task	task	NOUN
sc-1149	241	73	.	.	PUNCT
sc-1149	242	1	a	a	DET
sc-1149	242	2	permission	permission	NOUN
sc-1149	242	3	is	be	AUX
sc-1149	242	4	an	an	DET
sc-1149	242	5	action	action	NOUN
sc-1149	242	6	on	on	ADP
sc-1149	242	7	object	object	NOUN
sc-1149	242	8	.	.	PUNCT
sc-1149	243	1	an	an	DET
sc-1149	243	2	object	object	NOUN
sc-1149	243	3	is	be	AUX
sc-1149	243	4	defined	define	VERB
sc-1149	243	5	by	by	ADP
sc-1149	243	6	a	a	DET
sc-1149	243	7	set	set	NOUN
sc-1149	243	8	of	of	ADP
sc-1149	243	9	object	object	NOUN
sc-1149	243	10	attributes	attribute	NOUN
sc-1149	243	11	.	.	PUNCT
sc-1149	244	1	for	for	ADP
sc-1149	244	2	instance	instance	NOUN
sc-1149	244	3	(	(	PUNCT
sc-1149	244	4	write	write	VERB
sc-1149	244	5	,	,	PUNCT
sc-1149	244	6	mr	mr	PROPN
sc-1149	244	7	)	)	PUNCT
sc-1149	244	8	,	,	PUNCT
sc-1149	244	9	(	(	PUNCT
sc-1149	244	10	read	read	VERB
sc-1149	244	11	,	,	PUNCT
sc-1149	244	12	scan	scan	ADJ
sc-1149	244	13	)	)	PUNCT
sc-1149	244	14	and	and	CCONJ
sc-1149	244	15	(	(	PUNCT
sc-1149	244	16	read	read	VERB
sc-1149	244	17	,	,	PUNCT
sc-1149	244	18	video	video	NOUN
sc-1149	244	19	)	)	PUNCT
sc-1149	244	20	are	be	AUX
sc-1149	244	21	three	three	NUM
sc-1149	244	22	permissions	permission	NOUN
sc-1149	244	23	related	relate	VERB
sc-1149	244	24	to	to	ADP
sc-1149	244	25	the	the	DET
sc-1149	244	26	task	task	NOUN
sc-1149	244	27	take_a_decision	take_a_decision	NOUN
sc-1149	244	28	.	.	PUNCT
sc-1149	245	1	access	access	NOUN
sc-1149	245	2	control	control	NOUN
sc-1149	245	3	authorizations	authorization	NOUN
sc-1149	245	4	in	in	ADP
sc-1149	245	5	c	c	NOUN
sc-1149	245	6	-	-	PUNCT
sc-1149	245	7	abac	abac	ADJ
sc-1149	245	8	model	model	NOUN
sc-1149	245	9	are	be	AUX
sc-1149	245	10	defined	define	VERB
sc-1149	245	11	by	by	ADP
sc-1149	245	12	the	the	DET
sc-1149	245	13	following	follow	VERB
sc-1149	245	14	the	the	DET
sc-1149	245	15	formalism	formalism	NOUN
sc-1149	245	16	shown	show	VERB
sc-1149	245	17	in	in	ADP
sc-1149	245	18	the	the	DET
sc-1149	245	19	figure	figure	NOUN
sc-1149	245	20	7	7	NUM
sc-1149	245	21	:	:	PUNCT
sc-1149	245	22	the	the	DET
sc-1149	245	23	authorization	authorization	NOUN
sc-1149	245	24	authorizationwrite(ti;u	authorizationwrite(ti;u	NUM
sc-1149	245	25	;	;	PUNCT
sc-1149	245	26	o	o	X
sc-1149	245	27	)	)	PUNCT
sc-1149	245	28	that	that	PRON
sc-1149	245	29	is	be	AUX
sc-1149	245	30	shown	show	VERB
sc-1149	245	31	in	in	ADP
sc-1149	245	32	the	the	DET
sc-1149	245	33	figure	figure	NOUN
sc-1149	245	34	7	7	NUM
sc-1149	245	35	matches	match	NOUN
sc-1149	245	36	to	to	ADP
sc-1149	245	37	’	'	PUNCT
sc-1149	245	38	the	the	DET
sc-1149	245	39	rule	rule	NOUN
sc-1149	245	40	the	the	DET
sc-1149	245	41	radiologist	radiologist	NOUN
sc-1149	245	42	interprets	interpret	VERB
sc-1149	245	43	the	the	DET
sc-1149	245	44	scan	scan	ADJ
sc-1149	245	45	images	image	NOUN
sc-1149	245	46	’	'	PUNCT
sc-1149	245	47	as	as	SCONJ
sc-1149	245	48	specified	specify	VERB
sc-1149	245	49	at	at	ADP
sc-1149	245	50	the	the	DET
sc-1149	245	51	first	first	ADJ
sc-1149	245	52	line	line	NOUN
sc-1149	245	53	in	in	ADP
sc-1149	245	54	figure	figure	NOUN
sc-1149	245	55	6	6	NUM
sc-1149	245	56	.	.	PUNCT
sc-1149	246	1	this	this	DET
sc-1149	246	2	authorization	authorization	NOUN
sc-1149	246	3	is	be	AUX
sc-1149	246	4	defined	define	VERB
sc-1149	246	5	in	in	ADP
sc-1149	246	6	the	the	DET
sc-1149	246	7	collaborative	collaborative	ADJ
sc-1149	246	8	tenant	tenant	NOUN
sc-1149	246	9	ct	ct	NOUN
sc-1149	246	10	1	1	NUM
sc-1149	246	11	and	and	CCONJ
sc-1149	246	12	is	be	AUX
sc-1149	246	13	composed	compose	VERB
sc-1149	246	14	of	of	ADP
sc-1149	246	15	a	a	DET
sc-1149	246	16	set	set	NOUN
sc-1149	246	17	of	of	ADP
sc-1149	246	18	task	task	NOUN
sc-1149	246	19	attributes	attribute	NOUN
sc-1149	246	20	,	,	PUNCT
sc-1149	246	21	user	user	NOUN
sc-1149	246	22	attributes	attribute	NOUN
sc-1149	246	23	and	and	CCONJ
sc-1149	246	24	objects	object	VERB
sc-1149	246	25	attributes	attribute	NOUN
sc-1149	246	26	.	.	PUNCT
sc-1149	247	1	this	this	DET
sc-1149	247	2	authorization	authorization	NOUN
sc-1149	247	3	is	be	AUX
sc-1149	247	4	valid	valid	ADJ
sc-1149	247	5	for	for	SCONJ
sc-1149	247	6	the	the	DET
sc-1149	247	7	action	action	NOUN
sc-1149	247	8	write	write	VERB
sc-1149	247	9	if	if	SCONJ
sc-1149	247	10	only	only	ADV
sc-1149	247	11	if	if	SCONJ
sc-1149	247	12	:	:	PUNCT
sc-1149	247	13	(	(	PUNCT
sc-1149	247	14	1	1	X
sc-1149	247	15	)	)	PUNCT
sc-1149	247	16	the	the	DET
sc-1149	247	17	instance	instance	NOUN
sc-1149	247	18	ti	ti	NOUN
sc-1149	247	19	is	be	AUX
sc-1149	247	20	instantiated	instantiate	VERB
sc-1149	247	21	of	of	ADP
sc-1149	247	22	the	the	DET
sc-1149	247	23	task	task	NOUN
sc-1149	247	24	interpret_scan	interpret_scan	PROPN
sc-1149	247	25	;	;	PUNCT
sc-1149	247	26	(	(	PUNCT
sc-1149	247	27	2	2	X
sc-1149	247	28	)	)	PUNCT
sc-1149	247	29	the	the	DET
sc-1149	247	30	task	task	NOUN
sc-1149	247	31	instance	instance	NOUN
sc-1149	247	32	ti	ti	PROPN
sc-1149	247	33	belongs	belong	VERB
sc-1149	247	34	to	to	ADP
sc-1149	247	35	the	the	DET
sc-1149	247	36	workflow	workflow	NOUN
sc-1149	247	37	tenemo	tenemo	NOUN
sc-1149	247	38	;	;	PUNCT
sc-1149	247	39	(	(	PUNCT
sc-1149	247	40	3	3	X
sc-1149	247	41	)	)	PUNCT
sc-1149	247	42	the	the	DET
sc-1149	247	43	previous	previous	ADJ
sc-1149	247	44	task	task	NOUN
sc-1149	247	45	instances	instance	NOUN
sc-1149	247	46	of	of	ADP
sc-1149	247	47	the	the	DET
sc-1149	247	48	ti	ti	NOUN
sc-1149	247	49	are	be	AUX
sc-1149	247	50	accomplished	accomplish	VERB
sc-1149	247	51	;	;	PUNCT
sc-1149	247	52	(	(	PUNCT
sc-1149	247	53	4	4	X
sc-1149	247	54	)	)	PUNCT
sc-1149	247	55	there	there	PRON
sc-1149	247	56	is	be	VERB
sc-1149	247	57	a	a	DET
sc-1149	247	58	collaborative	collaborative	ADJ
sc-1149	247	59	session	session	NOUN
sc-1149	247	60	in	in	ADP
sc-1149	247	61	which	which	PRON
sc-1149	247	62	the	the	DET
sc-1149	247	63	task	task	NOUN
sc-1149	247	64	runs	run	VERB
sc-1149	247	65	;	;	PUNCT
sc-1149	247	66	(	(	PUNCT
sc-1149	247	67	5	5	X
sc-1149	247	68	)	)	PUNCT
sc-1149	247	69	the	the	DET
sc-1149	247	70	user	user	NOUN
sc-1149	247	71	u	u	PROPN
sc-1149	247	72	is	be	AUX
sc-1149	247	73	member	member	NOUN
sc-1149	247	74	of	of	ADP
sc-1149	247	75	the	the	DET
sc-1149	247	76	collaborative	collaborative	ADJ
sc-1149	247	77	session	session	NOUN
sc-1149	247	78	cs	cs	X
sc-1149	247	79	;	;	PUNCT
sc-1149	247	80	(	(	PUNCT
sc-1149	247	81	6	6	X
sc-1149	247	82	)	)	PUNCT
sc-1149	247	83	the	the	DET
sc-1149	247	84	object	object	NOUN
sc-1149	247	85	o	o	NOUN
sc-1149	247	86	is	be	AUX
sc-1149	247	87	shared	share	VERB
sc-1149	247	88	in	in	ADP
sc-1149	247	89	the	the	DET
sc-1149	247	90	session	session	NOUN
sc-1149	247	91	cs	cs	NOUN
sc-1149	247	92	;	;	PUNCT
sc-1149	247	93	(	(	PUNCT
sc-1149	247	94	7	7	X
sc-1149	247	95	)	)	PUNCT
sc-1149	247	96	the	the	DET
sc-1149	247	97	tenant	tenant	NOUN
sc-1149	247	98	sh	sh	PROPN
sc-1149	247	99	authorizes	authorize	VERB
sc-1149	247	100	his	his	PRON
sc-1149	247	101	user	user	NOUN
sc-1149	247	102	u	u	NOUN
sc-1149	247	103	to	to	PART
sc-1149	247	104	perform	perform	VERB
sc-1149	247	105	the	the	DET
sc-1149	247	106	task	task	NOUN
sc-1149	247	107	t	t	PROPN
sc-1149	247	108	5	5	NUM
sc-1149	247	109	;	;	PUNCT
sc-1149	247	110	(	(	PUNCT
sc-1149	247	111	8)	8)	X
sc-1149	247	112	the	the	DET
sc-1149	247	113	tenant	tenant	NOUN
sc-1149	247	114	hh	hh	VERB
sc-1149	247	115	shares	share	VERB
sc-1149	247	116	the	the	DET
sc-1149	247	117	object	object	NOUN
sc-1149	247	118	o	o	NOUN
sc-1149	247	119	of	of	ADP
sc-1149	247	120	the	the	DET
sc-1149	247	121	type	type	NOUN
sc-1149	247	122	objectt	objectt	ADJ
sc-1149	247	123	ype	ype	NOUN
sc-1149	247	124	with	with	ADP
sc-1149	247	125	others	other	NOUN
sc-1149	247	126	collaborating	collaborate	VERB
sc-1149	247	127	tenants	tenant	NOUN
sc-1149	247	128	for	for	ADP
sc-1149	247	129	the	the	DET
sc-1149	247	130	action	action	NOUN
sc-1149	247	131	write	write	VERB
sc-1149	247	132	.	.	PUNCT
sc-1149	248	1	the	the	DET
sc-1149	248	2	attributes	attribute	NOUN
sc-1149	248	3	assigneduser	assigneduser	NOUN
sc-1149	248	4	and	and	CCONJ
sc-1149	248	5	usedobject	usedobject	PROPN
sc-1149	248	6	are	be	AUX
sc-1149	248	7	defined	define	VERB
sc-1149	248	8	and	and	CCONJ
sc-1149	248	9	evaluated	evaluate	VERB
sc-1149	248	10	in	in	ADP
sc-1149	248	11	the	the	DET
sc-1149	248	12	tenant	tenant	NOUN
sc-1149	248	13	sh	sh	PROPN
sc-1149	248	14	and	and	CCONJ
sc-1149	248	15	hh	hh	VERB
sc-1149	248	16	respectively	respectively	ADV
sc-1149	248	17	.	.	PUNCT
sc-1149	249	1	this	this	DET
sc-1149	249	2	attribue	attribue	NOUN
sc-1149	249	3	assigneduser(t	assigneduser(t	NOUN
sc-1149	249	4	5;sh)(u	5;sh)(u	NUM
sc-1149	249	5	)	)	PUNCT
sc-1149	249	6	=	=	SYM
sc-1149	249	7	t	t	NOUN
sc-1149	249	8	rue	rue	NOUN
sc-1149	249	9	if	if	SCONJ
sc-1149	249	10	only	only	ADV
sc-1149	249	11	if	if	SCONJ
sc-1149	249	12	:	:	PUNCT
sc-1149	249	13	(	(	PUNCT
sc-1149	249	14	1	1	X
sc-1149	249	15	)	)	PUNCT
sc-1149	249	16	the	the	DET
sc-1149	249	17	user	user	NOUN
sc-1149	249	18	u	u	PROPN
sc-1149	249	19	plays	play	VERB
sc-1149	249	20	the	the	DET
sc-1149	249	21	role	role	NOUN
sc-1149	249	22	radiologist	radiologist	NOUN
sc-1149	249	23	;	;	PUNCT
sc-1149	249	24	(	(	PUNCT
sc-1149	249	25	2	2	X
sc-1149	249	26	)	)	PUNCT
sc-1149	249	27	u	u	NOUN
sc-1149	249	28	is	be	AUX
sc-1149	249	29	at	at	ADV
sc-1149	249	30	least	least	ADJ
sc-1149	249	31	level	level	NOUN
sc-1149	249	32	1	1	NUM
sc-1149	249	33	of	of	ADP
sc-1149	249	34	the	the	DET
sc-1149	249	35	neurology	neurology	NOUN
sc-1149	249	36	expertise	expertise	NOUN
sc-1149	249	37	;	;	PUNCT
sc-1149	249	38	(	(	PUNCT
sc-1149	249	39	3	3	X
sc-1149	249	40	)	)	PUNCT
sc-1149	249	41	u	u	NOUN
sc-1149	249	42	is	be	AUX
sc-1149	249	43	at	at	ADV
sc-1149	249	44	least	least	ADJ
sc-1149	249	45	level	level	NOUN
sc-1149	249	46	2	2	NUM
sc-1149	249	47	of	of	ADP
sc-1149	249	48	the	the	DET
sc-1149	249	49	radiology	radiology	NOUN
sc-1149	249	50	expertise	expertise	NOUN
sc-1149	249	51	;	;	PUNCT
sc-1149	249	52	(	(	PUNCT
sc-1149	249	53	4	4	X
sc-1149	249	54	)	)	PUNCT
sc-1149	249	55	u	u	NOUN
sc-1149	249	56	is	be	AUX
sc-1149	249	57	at	at	ADP
sc-1149	249	58	least	least	ADJ
sc-1149	249	59	level	level	NOUN
sc-1149	249	60	0	0	NUM
sc-1149	249	61	of	of	ADP
sc-1149	249	62	the	the	DET
sc-1149	249	63	cardiology	cardiology	NOUN
sc-1149	249	64	expertise	expertise	NOUN
sc-1149	249	65	.	.	PUNCT
sc-1149	250	1	the	the	DET
sc-1149	250	2	attribute	attribute	NOUN
sc-1149	250	3	usedobject(scan	usedobject(scan	PROPN
sc-1149	250	4	;	;	PUNCT
sc-1149	250	5	write;hh)(o	write;hh)(o	X
sc-1149	250	6	)	)	PUNCT
sc-1149	250	7	=	=	SYM
sc-1149	250	8	t	t	NOUN
sc-1149	250	9	rue	rue	NOUN
sc-1149	250	10	if	if	SCONJ
sc-1149	250	11	only	only	ADV
sc-1149	250	12	if	if	SCONJ
sc-1149	250	13	:	:	PUNCT
sc-1149	250	14	(	(	PUNCT
sc-1149	250	15	1	1	X
sc-1149	250	16	)	)	PUNCT
sc-1149	250	17	the	the	DET
sc-1149	250	18	object	object	NOUN
sc-1149	250	19	o	o	NOUN
sc-1149	250	20	of	of	ADP
sc-1149	250	21	the	the	DET
sc-1149	250	22	type	type	NOUN
sc-1149	250	23	scan	scan	NOUN
sc-1149	250	24	;	;	PUNCT
sc-1149	250	25	the	the	DET
sc-1149	250	26	sensitivity	sensitivity	NOUN
sc-1149	250	27	class	class	NOUN
sc-1149	250	28	of	of	ADP
sc-1149	250	29	object	object	NOUN
sc-1149	250	30	o	o	NOUN
sc-1149	250	31	is	be	AUX
sc-1149	250	32	less	less	ADJ
sc-1149	250	33	than	than	ADP
sc-1149	250	34	or	or	CCONJ
sc-1149	250	35	equal	equal	ADJ
sc-1149	250	36	to	to	ADP
sc-1149	250	37	class2	class2	PROPN
sc-1149	250	38	.	.	PROPN
sc-1149	250	39	5	5	NUM
sc-1149	250	40	.	.	X
sc-1149	250	41	implementation	implementation	NOUN
sc-1149	250	42	5.1	5.1	NUM
sc-1149	250	43	.	.	PUNCT
sc-1149	251	1	system	system	NOUN
sc-1149	251	2	architecture	architecture	NOUN
sc-1149	251	3	openstack	openstack	PROPN
sc-1149	251	4	is	be	AUX
sc-1149	251	5	a	a	DET
sc-1149	251	6	robust	robust	ADJ
sc-1149	251	7	open	open	ADJ
sc-1149	251	8	-	-	PUNCT
sc-1149	251	9	source	source	NOUN
sc-1149	251	10	iaas	iaas	NOUN
sc-1149	251	11	software	software	NOUN
sc-1149	251	12	for	for	ADP
sc-1149	251	13	building	build	VERB
sc-1149	251	14	public	public	ADJ
sc-1149	251	15	,	,	PUNCT
sc-1149	251	16	private	private	ADJ
sc-1149	251	17	,	,	PUNCT
sc-1149	251	18	community	community	NOUN
sc-1149	251	19	or	or	CCONJ
sc-1149	251	20	hybrid	hybrid	ADJ
sc-1149	251	21	clouds	cloud	NOUN
sc-1149	251	22	.	.	PUNCT
sc-1149	252	1	opensteck	opensteck	NOUN
sc-1149	252	2	is	be	AUX
sc-1149	252	3	adopted	adopt	VERB
sc-1149	252	4	by	by	ADP
sc-1149	252	5	many	many	ADJ
sc-1149	252	6	cloud	cloud	NOUN
sc-1149	252	7	providers	provider	NOUN
sc-1149	252	8	such	such	ADJ
sc-1149	252	9	as	as	ADP
sc-1149	252	10	rackspace	rackspace	PROPN
sc-1149	252	11	,	,	PUNCT
sc-1149	252	12	ibm	ibm	PROPN
sc-1149	252	13	and	and	CCONJ
sc-1149	252	14	redhat	redhat	NOUN
sc-1149	252	15	.	.	PUNCT
sc-1149	253	1	openstack	openstack	PROPN
sc-1149	253	2	contains	contain	VERB
sc-1149	253	3	the	the	DET
sc-1149	253	4	following	follow	VERB
sc-1149	253	5	components	component	NOUN
sc-1149	253	6	:	:	PUNCT
sc-1149	253	7	nova	nova	PROPN
sc-1149	253	8	,	,	PUNCT
sc-1149	253	9	swift	swift	ADJ
sc-1149	253	10	,	,	PUNCT
sc-1149	253	11	glance	glance	NOUN
sc-1149	253	12	,	,	PUNCT
sc-1149	253	13	cinder	cinder	NOUN
sc-1149	253	14	,	,	PUNCT
sc-1149	253	15	keystone	keystone	PROPN
sc-1149	253	16	,	,	PUNCT
sc-1149	253	17	and	and	CCONJ
sc-1149	253	18	horizon	horizon	NOUN
sc-1149	253	19	.	.	PUNCT
sc-1149	254	1	each	each	DET
sc-1149	254	2	component	component	NOUN
sc-1149	254	3	acts	act	VERB
sc-1149	254	4	as	as	ADP
sc-1149	254	5	a	a	DET
sc-1149	254	6	service	service	NOUN
sc-1149	254	7	which	which	PRON
sc-1149	254	8	communicates	communicate	VERB
sc-1149	254	9	with	with	ADP
sc-1149	254	10	other	other	ADJ
sc-1149	254	11	services	service	NOUN
sc-1149	254	12	via	via	ADP
sc-1149	254	13	message	message	NOUN
sc-1149	254	14	queues	queue	NOUN
sc-1149	254	15	.	.	PUNCT
sc-1149	255	1	keystone	keystone	PROPN
sc-1149	255	2	provides	provide	VERB
sc-1149	255	3	authentication	authentication	NOUN
sc-1149	255	4	and	and	CCONJ
sc-1149	255	5	authorization	authorization	NOUN
sc-1149	255	6	for	for	ADP
sc-1149	255	7	all	all	DET
sc-1149	255	8	openstack	openstack	PROPN
sc-1149	255	9	services	service	NOUN
sc-1149	255	10	.	.	PUNCT
sc-1149	256	1	in	in	ADP
sc-1149	256	2	our	our	PRON
sc-1149	256	3	work	work	NOUN
sc-1149	256	4	,	,	PUNCT
sc-1149	256	5	we	we	PRON
sc-1149	256	6	focus	focus	VERB
sc-1149	256	7	on	on	ADP
sc-1149	256	8	the	the	DET
sc-1149	256	9	swift	swift	ADJ
sc-1149	256	10	object	object	NOUN
sc-1149	256	11	storage	storage	NOUN
sc-1149	256	12	.	.	PUNCT
sc-1149	257	1	swift	swift	NOUN
sc-1149	257	2	is	be	AUX
sc-1149	257	3	a	a	DET
sc-1149	257	4	multitenant	multitenant	ADJ
sc-1149	257	5	,	,	PUNCT
sc-1149	257	6	highly	highly	ADV
sc-1149	257	7	scalable	scalable	ADJ
sc-1149	257	8	and	and	CCONJ
sc-1149	257	9	durable	durable	ADJ
sc-1149	257	10	software	software	NOUN
sc-1149	257	11	defined	define	VERB
sc-1149	257	12	storage	storage	NOUN
sc-1149	257	13	system	system	NOUN
sc-1149	257	14	designed	design	VERB
sc-1149	257	15	to	to	PART
sc-1149	257	16	store	store	VERB
sc-1149	257	17	files	file	NOUN
sc-1149	257	18	,	,	PUNCT
sc-1149	257	19	videos	video	NOUN
sc-1149	257	20	,	,	PUNCT
sc-1149	257	21	virtual	virtual	ADJ
sc-1149	257	22	machine	machine	NOUN
sc-1149	257	23	snapshots	snapshot	NOUN
sc-1149	257	24	and	and	CCONJ
sc-1149	257	25	other	other	ADJ
sc-1149	257	26	unstructured	unstructured	ADJ
sc-1149	257	27	data	datum	NOUN
sc-1149	257	28	[	[	X
sc-1149	257	29	7	7	NUM
sc-1149	257	30	]	]	PUNCT
sc-1149	257	31	.	.	PUNCT
sc-1149	258	1	it	it	PRON
sc-1149	258	2	allows	allow	VERB
sc-1149	258	3	building	building	NOUN
sc-1149	258	4	,	,	PUNCT
sc-1149	258	5	operating	operating	NOUN
sc-1149	258	6	,	,	PUNCT
sc-1149	258	7	monitoring	monitoring	NOUN
sc-1149	258	8	,	,	PUNCT
sc-1149	258	9	and	and	CCONJ
sc-1149	258	10	managing	manage	VERB
sc-1149	258	11	distributed	distribute	VERB
sc-1149	258	12	object	object	NOUN
sc-1149	258	13	storage	storage	NOUN
sc-1149	258	14	systems	system	NOUN
sc-1149	258	15	that	that	PRON
sc-1149	258	16	can	can	AUX
sc-1149	258	17	scale	scale	VERB
sc-1149	258	18	up	up	ADP
sc-1149	258	19	to	to	PART
sc-1149	258	20	millions	million	NOUN
sc-1149	258	21	of	of	ADP
sc-1149	258	22	users	user	NOUN
sc-1149	258	23	.	.	PUNCT
sc-1149	259	1	the	the	DET
sc-1149	259	2	account	account	NOUN
sc-1149	259	3	server	server	NOUN
sc-1149	259	4	is	be	AUX
sc-1149	259	5	responsible	responsible	ADJ
sc-1149	259	6	for	for	ADP
sc-1149	259	7	listings	listing	NOUN
sc-1149	259	8	of	of	ADP
sc-1149	259	9	containers	container	NOUN
sc-1149	259	10	,	,	PUNCT
sc-1149	259	11	while	while	SCONJ
sc-1149	259	12	container	container	NOUN
sc-1149	259	13	server	server	NOUN
sc-1149	259	14	is	be	AUX
sc-1149	259	15	responsible	responsible	ADJ
sc-1149	259	16	for	for	ADP
sc-1149	259	17	listings	listing	NOUN
sc-1149	259	18	of	of	ADP
sc-1149	259	19	objects	object	NOUN
sc-1149	259	20	.	.	PUNCT
sc-1149	260	1	a	a	DET
sc-1149	260	2	container	container	NOUN
sc-1149	260	3	is	be	AUX
sc-1149	260	4	a	a	DET
sc-1149	260	5	mechanism	mechanism	NOUN
sc-1149	260	6	that	that	PRON
sc-1149	260	7	stores	store	VERB
sc-1149	260	8	data	datum	NOUN
sc-1149	260	9	objects	object	NOUN
sc-1149	260	10	.	.	PUNCT
sc-1149	261	1	an	an	DET
sc-1149	261	2	account	account	NOUN
sc-1149	261	3	might	might	AUX
sc-1149	261	4	have	have	VERB
sc-1149	261	5	many	many	ADJ
sc-1149	261	6	containers	container	NOUN
sc-1149	261	7	,	,	PUNCT
sc-1149	261	8	whereas	whereas	SCONJ
sc-1149	261	9	a	a	DET
sc-1149	261	10	container	container	NOUN
sc-1149	261	11	name	name	NOUN
sc-1149	261	12	is	be	AUX
sc-1149	261	13	unique	unique	ADJ
sc-1149	261	14	.	.	PUNCT
sc-1149	262	1	a	a	DET
sc-1149	262	2	user	user	NOUN
sc-1149	262	3	represents	represent	VERB
sc-1149	262	4	the	the	DET
sc-1149	262	5	entity	entity	NOUN
sc-1149	262	6	that	that	PRON
sc-1149	262	7	can	can	AUX
sc-1149	262	8	perform	perform	VERB
sc-1149	262	9	actions	action	NOUN
sc-1149	262	10	on	on	ADP
sc-1149	262	11	the	the	DET
sc-1149	262	12	object	object	NOUN
sc-1149	262	13	in	in	ADP
sc-1149	262	14	the	the	DET
sc-1149	262	15	account	account	NOUN
sc-1149	262	16	.	.	PUNCT
sc-1149	263	1	each	each	DET
sc-1149	263	2	user	user	NOUN
sc-1149	263	3	has	have	VERB
sc-1149	263	4	its	its	PRON
sc-1149	263	5	own	own	ADJ
sc-1149	263	6	account	account	NOUN
sc-1149	263	7	and	and	CCONJ
sc-1149	263	8	is	be	AUX
sc-1149	263	9	associated	associate	VERB
sc-1149	263	10	to	to	ADP
sc-1149	263	11	a	a	DET
sc-1149	263	12	single	single	ADJ
sc-1149	263	13	tenant	tenant	NOUN
sc-1149	263	14	.	.	PUNCT
sc-1149	264	1	swift	swift	PROPN
sc-1149	264	2	uses	use	VERB
sc-1149	264	3	the	the	DET
sc-1149	264	4	access	access	NOUN
sc-1149	264	5	control	control	NOUN
sc-1149	264	6	lists	list	NOUN
sc-1149	264	7	(	(	PUNCT
sc-1149	264	8	acl	acl	PROPN
sc-1149	264	9	)	)	PUNCT
sc-1149	264	10	to	to	PART
sc-1149	264	11	manage	manage	VERB
sc-1149	264	12	the	the	DET
sc-1149	264	13	access	access	NOUN
sc-1149	264	14	permissions	permission	NOUN
sc-1149	264	15	.	.	PUNCT
sc-1149	265	1	in	in	ADP
sc-1149	265	2	fact	fact	NOUN
sc-1149	265	3	,	,	PUNCT
sc-1149	265	4	the	the	DET
sc-1149	265	5	acl	acl	PROPN
sc-1149	265	6	model	model	NOUN
sc-1149	265	7	defines	define	VERB
sc-1149	265	8	static	static	ADJ
sc-1149	265	9	access	access	NOUN
sc-1149	265	10	rules	rule	NOUN
sc-1149	265	11	.	.	PUNCT
sc-1149	266	1	it	it	PRON
sc-1149	266	2	is	be	AUX
sc-1149	266	3	not	not	PART
sc-1149	266	4	suitable	suitable	ADJ
sc-1149	266	5	for	for	ADP
sc-1149	266	6	collaborative	collaborative	ADJ
sc-1149	266	7	environment	environment	NOUN
sc-1149	266	8	.	.	PUNCT
sc-1149	267	1	in	in	ADP
sc-1149	267	2	this	this	DET
sc-1149	267	3	paper	paper	NOUN
sc-1149	267	4	,	,	PUNCT
sc-1149	267	5	we	we	PRON
sc-1149	267	6	implemented	implement	VERB
sc-1149	267	7	the	the	DET
sc-1149	267	8	c	c	NOUN
sc-1149	267	9	-	-	PUNCT
sc-1149	267	10	abac	abac	ADJ
sc-1149	267	11	model	model	NOUN
sc-1149	267	12	on	on	ADP
sc-1149	267	13	the	the	DET
sc-1149	267	14	swift	swift	ADJ
sc-1149	267	15	storage	storage	NOUN
sc-1149	267	16	8	8	NUM
sc-1149	267	17	eai	eai	NOUN
sc-1149	267	18	endorsed	endorse	VERB
sc-1149	267	19	transactions	transaction	NOUN
sc-1149	267	20	on	on	ADP
sc-1149	267	21	smart	smart	ADJ
sc-1149	267	22	cities	city	NOUN
sc-1149	267	23	02	02	NUM
sc-1149	267	24	2018	2018	NUM
sc-1149	267	25	06	06	NUM
sc-1149	267	26	2018	2018	NUM
sc-1149	267	27	|	|	ADV
sc-1149	267	28	volume	volume	NOUN
sc-1149	267	29	2	2	NUM
sc-1149	267	30	|	|	ADV
sc-1149	267	31	issue	issue	VERB
sc-1149	267	32	8	8	NUM
sc-1149	267	33	|	|	ADV
sc-1149	267	34	e3	e3	VERB
sc-1149	267	35	c	c	NOUN
sc-1149	267	36	-	-	PUNCT
sc-1149	267	37	abac	abac	ADJ
sc-1149	267	38	:	:	PUNCT
sc-1149	267	39	an	an	DET
sc-1149	267	40	abac	abac	ADJ
sc-1149	267	41	based	base	VERB
sc-1149	267	42	model	model	NOUN
sc-1149	267	43	for	for	ADP
sc-1149	267	44	collaboration	collaboration	NOUN
sc-1149	267	45	in	in	ADP
sc-1149	267	46	multi	multi	ADJ
sc-1149	267	47	-	-	ADJ
sc-1149	267	48	tenant	tenant	ADJ
sc-1149	267	49	environment	environment	NOUN
sc-1149	267	50	figure	figure	NOUN
sc-1149	267	51	7	7	NUM
sc-1149	267	52	.	.	PUNCT
sc-1149	267	53	example	example	NOUN
sc-1149	267	54	:	:	PUNCT
sc-1149	267	55	c	c	X
sc-1149	267	56	-	-	PUNCT
sc-1149	267	57	abac	abac	ADJ
sc-1149	267	58	authorizations	authorization	NOUN
sc-1149	267	59	component	component	NOUN
sc-1149	267	60	.	.	PUNCT
sc-1149	268	1	this	this	DET
sc-1149	268	2	component	component	NOUN
sc-1149	268	3	acts	act	VERB
sc-1149	268	4	as	as	ADP
sc-1149	268	5	a	a	DET
sc-1149	268	6	service	service	NOUN
sc-1149	268	7	that	that	PRON
sc-1149	268	8	communicates	communicate	VERB
sc-1149	268	9	with	with	ADP
sc-1149	268	10	other	other	ADJ
sc-1149	268	11	components	component	NOUN
sc-1149	268	12	(	(	PUNCT
sc-1149	268	13	nova	nova	PROPN
sc-1149	268	14	volume	volume	PROPN
sc-1149	268	15	,	,	PUNCT
sc-1149	268	16	nova	nova	PROPN
sc-1149	268	17	compute	compute	PROPN
sc-1149	268	18	,	,	PUNCT
sc-1149	268	19	nova	nova	PROPN
sc-1149	268	20	network	network	PROPN
sc-1149	268	21	,	,	PUNCT
sc-1149	268	22	glance	glance	NOUN
sc-1149	268	23	and	and	CCONJ
sc-1149	268	24	keystone	keystone	PROPN
sc-1149	268	25	)	)	PUNCT
sc-1149	268	26	via	via	ADP
sc-1149	268	27	message	message	NOUN
sc-1149	268	28	queues	queue	NOUN
sc-1149	268	29	.	.	PUNCT
sc-1149	269	1	these	these	DET
sc-1149	269	2	components	component	NOUN
sc-1149	269	3	are	be	AUX
sc-1149	269	4	loosely	loosely	ADV
sc-1149	269	5	coupled	couple	VERB
sc-1149	269	6	.	.	PUNCT
sc-1149	270	1	keystone	keystone	PROPN
sc-1149	270	2	is	be	AUX
sc-1149	270	3	the	the	DET
sc-1149	270	4	identity	identity	NOUN
sc-1149	270	5	service	service	NOUN
sc-1149	270	6	used	use	VERB
sc-1149	270	7	by	by	ADP
sc-1149	270	8	openstack	openstack	PROPN
sc-1149	270	9	for	for	ADP
sc-1149	270	10	authentication	authentication	NOUN
sc-1149	270	11	and	and	CCONJ
sc-1149	270	12	authorization	authorization	NOUN
sc-1149	270	13	.	.	PUNCT
sc-1149	271	1	it	it	PRON
sc-1149	271	2	provides	provide	VERB
sc-1149	271	3	a	a	DET
sc-1149	271	4	token	token	NOUN
sc-1149	271	5	signed	sign	VERB
sc-1149	271	6	by	by	ADP
sc-1149	271	7	each	each	DET
sc-1149	271	8	user	user	NOUN
sc-1149	271	9	’s	’s	PART
sc-1149	271	10	private	private	ADJ
sc-1149	271	11	key	key	NOUN
sc-1149	271	12	.	.	PUNCT
sc-1149	272	1	let	let	VERB
sc-1149	272	2	us	we	PRON
sc-1149	272	3	consider	consider	VERB
sc-1149	272	4	the	the	DET
sc-1149	272	5	telemedicine	telemedicine	NOUN
sc-1149	272	6	scenario	scenario	NOUN
sc-1149	272	7	where	where	SCONJ
sc-1149	272	8	the	the	DET
sc-1149	272	9	school	school	NOUN
sc-1149	272	10	hospital	hospital	NOUN
sc-1149	272	11	(	(	PUNCT
sc-1149	272	12	sh	sh	PROPN
sc-1149	272	13	)	)	PUNCT
sc-1149	272	14	,	,	PUNCT
sc-1149	272	15	the	the	DET
sc-1149	272	16	emergency	emergency	NOUN
sc-1149	272	17	medical	medical	ADJ
sc-1149	272	18	services	service	NOUN
sc-1149	272	19	(	(	PUNCT
sc-1149	272	20	ems	ems	PROPN
sc-1149	272	21	)	)	PUNCT
sc-1149	272	22	,	,	PUNCT
sc-1149	272	23	and	and	CCONJ
sc-1149	272	24	the	the	DET
sc-1149	272	25	home	home	NOUN
sc-1149	272	26	hospital	hospital	NOUN
sc-1149	272	27	(	(	PUNCT
sc-1149	272	28	hh	hh	PROPN
sc-1149	272	29	)	)	PUNCT
sc-1149	272	30	are	be	AUX
sc-1149	272	31	three	three	NUM
sc-1149	272	32	collaborating	collaborate	VERB
sc-1149	272	33	organizations	organization	NOUN
sc-1149	272	34	.	.	PUNCT
sc-1149	273	1	these	these	DET
sc-1149	273	2	organizations	organization	NOUN
sc-1149	273	3	share	share	VERB
sc-1149	273	4	a	a	DET
sc-1149	273	5	common	common	ADJ
sc-1149	273	6	private	private	ADJ
sc-1149	273	7	cloud	cloud	NOUN
sc-1149	273	8	openstack	openstack	PROPN
sc-1149	273	9	.	.	PUNCT
sc-1149	274	1	we	we	PRON
sc-1149	274	2	consider	consider	VERB
sc-1149	274	3	that	that	SCONJ
sc-1149	274	4	these	these	DET
sc-1149	274	5	organizations	organization	NOUN
sc-1149	274	6	use	use	VERB
sc-1149	274	7	the	the	DET
sc-1149	274	8	swift	swift	ADJ
sc-1149	274	9	component	component	NOUN
sc-1149	274	10	for	for	ADP
sc-1149	274	11	the	the	DET
sc-1149	274	12	storage	storage	NOUN
sc-1149	274	13	service	service	NOUN
sc-1149	274	14	.	.	PUNCT
sc-1149	275	1	in	in	ADP
sc-1149	275	2	this	this	DET
sc-1149	275	3	use	use	NOUN
sc-1149	275	4	case	case	NOUN
sc-1149	275	5	,	,	PUNCT
sc-1149	275	6	each	each	DET
sc-1149	275	7	organization	organization	NOUN
sc-1149	275	8	is	be	AUX
sc-1149	275	9	assigned	assign	VERB
sc-1149	275	10	to	to	ADP
sc-1149	275	11	a	a	DET
sc-1149	275	12	swift	swift	ADJ
sc-1149	275	13	account	account	NOUN
sc-1149	275	14	.	.	PUNCT
sc-1149	276	1	(	(	PUNCT
sc-1149	276	2	e.g.	e.g.	ADV
sc-1149	276	3	the	the	DET
sc-1149	276	4	accounts	account	NOUN
sc-1149	276	5	acc_sh	acc_sh	NOUN
sc-1149	276	6	,	,	PUNCT
sc-1149	276	7	acc_ems	acc_em	NOUN
sc-1149	276	8	and	and	CCONJ
sc-1149	276	9	acc_hh	acc_hh	PROPN
sc-1149	276	10	represent	represent	VERB
sc-1149	276	11	the	the	DET
sc-1149	276	12	organizations	organization	NOUN
sc-1149	276	13	sh	sh	INTJ
sc-1149	276	14	,	,	PUNCT
sc-1149	276	15	ems	ems	PROPN
sc-1149	276	16	and	and	CCONJ
sc-1149	276	17	hh	hh	VERB
sc-1149	276	18	respectively	respectively	ADV
sc-1149	276	19	)	)	PUNCT
sc-1149	276	20	.	.	PUNCT
sc-1149	277	1	this	this	DET
sc-1149	277	2	cloud	cloud	NOUN
sc-1149	277	3	provides	provide	VERB
sc-1149	277	4	a	a	DET
sc-1149	277	5	service	service	NOUN
sc-1149	277	6	of	of	ADP
sc-1149	277	7	collaborative	collaborative	ADJ
sc-1149	277	8	sessions	session	NOUN
sc-1149	277	9	for	for	ADP
sc-1149	277	10	these	these	DET
sc-1149	277	11	organisations	organisation	NOUN
sc-1149	277	12	.	.	PUNCT
sc-1149	278	1	this	this	DET
sc-1149	278	2	service	service	NOUN
sc-1149	278	3	allows	allow	VERB
sc-1149	278	4	a	a	DET
sc-1149	278	5	group	group	NOUN
sc-1149	278	6	of	of	ADP
sc-1149	278	7	users	user	NOUN
sc-1149	278	8	,	,	PUNCT
sc-1149	278	9	from	from	ADP
sc-1149	278	10	different	different	ADJ
sc-1149	278	11	tenants	tenant	NOUN
sc-1149	278	12	,	,	PUNCT
sc-1149	278	13	to	to	PART
sc-1149	278	14	collaborate	collaborate	VERB
sc-1149	278	15	in	in	ADP
sc-1149	278	16	order	order	NOUN
sc-1149	278	17	to	to	PART
sc-1149	278	18	observe	observe	VERB
sc-1149	278	19	and	and	CCONJ
sc-1149	278	20	treat	treat	VERB
sc-1149	278	21	a	a	DET
sc-1149	278	22	patient	patient	NOUN
sc-1149	278	23	admitted	admit	VERB
sc-1149	278	24	in	in	ADP
sc-1149	278	25	the	the	DET
sc-1149	278	26	home	home	NOUN
sc-1149	278	27	hospital	hospital	NOUN
sc-1149	278	28	(	(	PUNCT
sc-1149	278	29	hh	hh	NOUN
sc-1149	278	30	)	)	PUNCT
sc-1149	278	31	emergency	emergency	NOUN
sc-1149	278	32	.	.	PUNCT
sc-1149	279	1	in	in	ADP
sc-1149	279	2	this	this	DET
sc-1149	279	3	example	example	NOUN
sc-1149	279	4	,	,	PUNCT
sc-1149	279	5	we	we	PRON
sc-1149	279	6	have	have	VERB
sc-1149	279	7	a	a	DET
sc-1149	279	8	collaborative	collaborative	ADJ
sc-1149	279	9	session	session	NOUN
sc-1149	279	10	cs1	cs1	NOUN
sc-1149	279	11	of	of	ADP
sc-1149	279	12	a	a	DET
sc-1149	279	13	telemedicine	telemedicine	NOUN
sc-1149	279	14	type	type	NOUN
sc-1149	279	15	.	.	PUNCT
sc-1149	280	1	during	during	ADP
sc-1149	280	2	a	a	DET
sc-1149	280	3	collaborative	collaborative	ADJ
sc-1149	280	4	session	session	NOUN
sc-1149	280	5	,	,	PUNCT
sc-1149	280	6	users	user	NOUN
sc-1149	280	7	may	may	AUX
sc-1149	280	8	intervene	intervene	VERB
sc-1149	280	9	dynamically	dynamically	ADV
sc-1149	280	10	without	without	ADP
sc-1149	280	11	a	a	DET
sc-1149	280	12	prior	prior	ADJ
sc-1149	280	13	knowledge	knowledge	NOUN
sc-1149	280	14	of	of	ADP
sc-1149	280	15	which	which	PRON
sc-1149	280	16	user	user	NOUN
sc-1149	280	17	will	will	AUX
sc-1149	280	18	access	access	VERB
sc-1149	280	19	which	which	PRON
sc-1149	280	20	object	object	VERB
sc-1149	280	21	.	.	PUNCT
sc-1149	281	1	in	in	ADP
sc-1149	281	2	order	order	NOUN
sc-1149	281	3	to	to	PART
sc-1149	281	4	support	support	VERB
sc-1149	281	5	c	c	NOUN
sc-1149	281	6	-	-	PUNCT
sc-1149	281	7	abac	abac	ADJ
sc-1149	281	8	model	model	NOUN
sc-1149	281	9	in	in	ADP
sc-1149	281	10	the	the	DET
sc-1149	281	11	openstack	openstack	PROPN
sc-1149	281	12	swift	swift	PROPN
sc-1149	281	13	environment	environment	NOUN
sc-1149	281	14	and	and	CCONJ
sc-1149	281	15	overcome	overcome	VERB
sc-1149	281	16	the	the	DET
sc-1149	281	17	limitations	limitation	NOUN
sc-1149	281	18	of	of	ADP
sc-1149	281	19	swift	swift	ADJ
sc-1149	281	20	acl	acl	PROPN
sc-1149	281	21	,	,	PUNCT
sc-1149	281	22	we	we	PRON
sc-1149	281	23	propose	propose	VERB
sc-1149	281	24	to	to	PART
sc-1149	281	25	extend	extend	VERB
sc-1149	281	26	the	the	DET
sc-1149	281	27	swift	swift	ADJ
sc-1149	281	28	component	component	NOUN
sc-1149	281	29	by	by	ADP
sc-1149	281	30	implementing	implement	VERB
sc-1149	281	31	a	a	DET
sc-1149	281	32	new	new	ADJ
sc-1149	281	33	c	c	ADJ
sc-1149	281	34	-	-	PUNCT
sc-1149	281	35	abac	abac	ADJ
sc-1149	281	36	module	module	NOUN
sc-1149	281	37	(	(	PUNCT
sc-1149	281	38	figure	figure	NOUN
sc-1149	281	39	8)	8)	NUM
sc-1149	281	40	.	.	PUNCT
sc-1149	282	1	the	the	DET
sc-1149	282	2	c	c	NOUN
sc-1149	282	3	-	-	PUNCT
sc-1149	282	4	abac	abac	ADJ
sc-1149	282	5	module	module	NOUN
sc-1149	282	6	is	be	AUX
sc-1149	282	7	composed	compose	VERB
sc-1149	282	8	of	of	ADP
sc-1149	282	9	five	five	NUM
sc-1149	282	10	components	component	NOUN
sc-1149	282	11	:	:	PUNCT
sc-1149	282	12	figure	figure	NOUN
sc-1149	282	13	8	8	NUM
sc-1149	282	14	.	.	PUNCT
sc-1149	283	1	the	the	DET
sc-1149	283	2	system	system	NOUN
sc-1149	283	3	architecture	architecture	NOUN
sc-1149	283	4	user	user	NOUN
sc-1149	283	5	attributes	attribute	VERB
sc-1149	283	6	,	,	PUNCT
sc-1149	283	7	object	object	NOUN
sc-1149	283	8	attributes	attribute	NOUN
sc-1149	283	9	,	,	PUNCT
sc-1149	283	10	task	task	NOUN
sc-1149	283	11	attributes	attribute	NOUN
sc-1149	283	12	,	,	PUNCT
sc-1149	283	13	authorizations	authorization	NOUN
sc-1149	283	14	and	and	CCONJ
sc-1149	283	15	the	the	DET
sc-1149	283	16	policy	policy	NOUN
sc-1149	283	17	decision	decision	NOUN
sc-1149	283	18	component	component	NOUN
sc-1149	283	19	.	.	PUNCT
sc-1149	284	1	in	in	ADP
sc-1149	284	2	the	the	DET
sc-1149	284	3	following	following	NOUN
sc-1149	284	4	,	,	PUNCT
sc-1149	284	5	we	we	PRON
sc-1149	284	6	describe	describe	VERB
sc-1149	284	7	each	each	PRON
sc-1149	284	8	of	of	ADP
sc-1149	284	9	these	these	DET
sc-1149	284	10	components	component	NOUN
sc-1149	284	11	:	:	PUNCT
sc-1149	284	12	9	9	NUM
sc-1149	284	13	eai	eai	NOUN
sc-1149	284	14	endorsed	endorse	VERB
sc-1149	284	15	transactions	transaction	NOUN
sc-1149	284	16	on	on	ADP
sc-1149	284	17	smart	smart	ADJ
sc-1149	284	18	cities	city	NOUN
sc-1149	284	19	02	02	NUM
sc-1149	284	20	2018	2018	NUM
sc-1149	284	21	06	06	NUM
sc-1149	284	22	2018	2018	NUM
sc-1149	284	23	|	|	ADV
sc-1149	284	24	volume	volume	NOUN
sc-1149	284	25	2	2	NUM
sc-1149	284	26	|	|	ADV
sc-1149	284	27	issue	issue	VERB
sc-1149	284	28	8	8	NUM
sc-1149	284	29	|	|	NOUN
sc-1149	284	30	e3	e3	VERB
sc-1149	284	31	m.	m.	NOUN
sc-1149	284	32	madani	madani	PROPN
sc-1149	284	33	,	,	PUNCT
sc-1149	284	34	m.	m.	NOUN
sc-1149	284	35	erradi	erradi	PROPN
sc-1149	284	36	,	,	PUNCT
sc-1149	284	37	y.	y.	PROPN
sc-1149	284	38	benkaouz	benkaouz	VERB
sc-1149	284	39	•	•	NOUN
sc-1149	285	1	user	user	NOUN
sc-1149	285	2	attributes	attribute	VERB
sc-1149	285	3	:	:	PUNCT
sc-1149	285	4	the	the	DET
sc-1149	285	5	security	security	NOUN
sc-1149	285	6	administrator	administrator	NOUN
sc-1149	285	7	defines	define	VERB
sc-1149	285	8	the	the	DET
sc-1149	285	9	user	user	NOUN
sc-1149	285	10	attributes	attribute	VERB
sc-1149	285	11	as	as	ADP
sc-1149	285	12	a	a	DET
sc-1149	285	13	function	function	NOUN
sc-1149	285	14	that	that	PRON
sc-1149	285	15	takes	take	VERB
sc-1149	285	16	user	user	NOUN
sc-1149	285	17	as	as	ADP
sc-1149	285	18	input	input	NOUN
sc-1149	285	19	and	and	CCONJ
sc-1149	285	20	returns	return	VERB
sc-1149	285	21	a	a	DET
sc-1149	285	22	value	value	NOUN
sc-1149	285	23	from	from	ADP
sc-1149	285	24	the	the	DET
sc-1149	285	25	attribute	attribute	NOUN
sc-1149	285	26	’s	’s	PART
sc-1149	285	27	range	range	NOUN
sc-1149	285	28	.	.	PUNCT
sc-1149	286	1	(	(	PUNCT
sc-1149	286	2	user1	user1	NOUN
sc-1149	286	3	:	:	PUNCT
sc-1149	286	4	attr1	attr1	NOUN
sc-1149	286	5	:	:	PUNCT
sc-1149	286	6	val1	val1	PROPN
sc-1149	286	7	)	)	PUNCT
sc-1149	286	8	means	mean	VERB
sc-1149	286	9	that	that	SCONJ
sc-1149	286	10	for	for	ADP
sc-1149	286	11	the	the	DET
sc-1149	286	12	user	user	NOUN
sc-1149	286	13	user1	user1	PROPN
sc-1149	287	1	the	the	DET
sc-1149	287	2	value	value	NOUN
sc-1149	287	3	of	of	ADP
sc-1149	287	4	the	the	DET
sc-1149	287	5	attribute	attribute	NOUN
sc-1149	287	6	attr1	attr1	PROPN
sc-1149	287	7	is	be	AUX
sc-1149	287	8	val1	val1	PROPN
sc-1149	287	9	.	.	PUNCT
sc-1149	288	1	for	for	ADP
sc-1149	288	2	example	example	NOUN
sc-1149	288	3	,	,	PUNCT
sc-1149	288	4	a	a	DET
sc-1149	288	5	user	user	NOUN
sc-1149	288	6	attribute	attribute	NOUN
sc-1149	288	7	function	function	NOUN
sc-1149	288	8	such	such	ADJ
sc-1149	288	9	as	as	ADP
sc-1149	288	10	role	role	NOUN
sc-1149	288	11	∈	∈	PROPN
sc-1149	288	12	uat	uat	PROPN
sc-1149	288	13	t	t	PROPN
sc-1149	288	14	maps	map	VERB
sc-1149	288	15	user1	user1	PROPN
sc-1149	288	16	∈	∈	PROPN
sc-1149	288	17	u	u	NOUN
sc-1149	288	18	to	to	ADP
sc-1149	288	19	a	a	DET
sc-1149	288	20	value	value	NOUN
sc-1149	288	21	neurologist	neurologist	NOUN
sc-1149	288	22	.	.	PUNCT
sc-1149	289	1	furthermore	furthermore	ADV
sc-1149	289	2	,	,	PUNCT
sc-1149	289	3	the	the	DET
sc-1149	289	4	cloud	cloud	NOUN
sc-1149	289	5	administrator	administrator	NOUN
sc-1149	289	6	defines	define	VERB
sc-1149	289	7	the	the	DET
sc-1149	289	8	attribute	attribute	NOUN
sc-1149	289	9	function	function	NOUN
sc-1149	289	10	uowner	uowner	NOUN
sc-1149	289	11	to	to	PART
sc-1149	289	12	specify	specify	VERB
sc-1149	289	13	the	the	DET
sc-1149	289	14	user	user	NOUN
sc-1149	289	15	owner	owner	NOUN
sc-1149	289	16	.	.	PUNCT
sc-1149	290	1	for	for	ADP
sc-1149	290	2	instance	instance	NOUN
sc-1149	290	3	(	(	PUNCT
sc-1149	290	4	user1	user1	PROPN
sc-1149	290	5	:	:	PUNCT
sc-1149	290	6	uowner	uowner	NOUN
sc-1149	290	7	:	:	PUNCT
sc-1149	290	8	acc_sh	acc_sh	X
sc-1149	290	9	)	)	PUNCT
sc-1149	290	10	means	mean	VERB
sc-1149	290	11	that	that	SCONJ
sc-1149	290	12	the	the	DET
sc-1149	290	13	user	user	NOUN
sc-1149	290	14	user1	user1	PROPN
sc-1149	290	15	is	be	AUX
sc-1149	290	16	owned	own	VERB
sc-1149	290	17	by	by	ADP
sc-1149	290	18	the	the	DET
sc-1149	290	19	account	account	NOUN
sc-1149	290	20	acc_sh	acc_sh	NOUN
sc-1149	290	21	.	.	PUNCT
sc-1149	291	1	finally	finally	ADV
sc-1149	291	2	,	,	PUNCT
sc-1149	291	3	the	the	DET
sc-1149	291	4	administrator	administrator	NOUN
sc-1149	291	5	defines	define	VERB
sc-1149	291	6	the	the	DET
sc-1149	291	7	attribute	attribute	NOUN
sc-1149	291	8	function	function	NOUN
sc-1149	291	9	joincs	joinc	NOUN
sc-1149	291	10	to	to	PART
sc-1149	291	11	specify	specify	VERB
sc-1149	291	12	which	which	PRON
sc-1149	291	13	users	user	NOUN
sc-1149	291	14	could	could	AUX
sc-1149	291	15	join	join	VERB
sc-1149	291	16	the	the	DET
sc-1149	291	17	collaborative	collaborative	ADJ
sc-1149	291	18	sessions	session	NOUN
sc-1149	291	19	.	.	PUNCT
sc-1149	292	1	the	the	DET
sc-1149	292	2	value	value	NOUN
sc-1149	292	3	of	of	ADP
sc-1149	292	4	this	this	DET
sc-1149	292	5	attribute	attribute	NOUN
sc-1149	292	6	is	be	AUX
sc-1149	292	7	either	either	CCONJ
sc-1149	292	8	true	true	ADJ
sc-1149	292	9	or	or	CCONJ
sc-1149	292	10	f	f	X
sc-1149	292	11	alse	alse	PROPN
sc-1149	292	12	.	.	PUNCT
sc-1149	293	1	(	(	PUNCT
sc-1149	293	2	user1	user1	NOUN
sc-1149	293	3	:	:	PUNCT
sc-1149	293	4	joincs	joinc	NOUN
sc-1149	293	5	:	:	PUNCT
sc-1149	293	6	true	true	ADJ
sc-1149	293	7	)	)	PUNCT
sc-1149	293	8	means	mean	VERB
sc-1149	293	9	that	that	SCONJ
sc-1149	293	10	the	the	DET
sc-1149	293	11	user	user	NOUN
sc-1149	293	12	user1	user1	PROPN
sc-1149	293	13	could	could	AUX
sc-1149	293	14	participate	participate	VERB
sc-1149	293	15	in	in	ADP
sc-1149	293	16	the	the	DET
sc-1149	293	17	collaboration	collaboration	NOUN
sc-1149	293	18	.	.	PUNCT
sc-1149	294	1	•	•	NUM
sc-1149	294	2	object	object	NOUN
sc-1149	294	3	attributes	attribute	VERB
sc-1149	294	4	:	:	PUNCT
sc-1149	294	5	the	the	DET
sc-1149	294	6	tenant	tenant	NOUN
sc-1149	294	7	administrator	administrator	NOUN
sc-1149	294	8	assigns	assign	VERB
sc-1149	294	9	the	the	DET
sc-1149	294	10	object	object	NOUN
sc-1149	294	11	attributes	attribute	VERB
sc-1149	294	12	as	as	ADP
sc-1149	294	13	a	a	DET
sc-1149	294	14	function	function	NOUN
sc-1149	294	15	that	that	PRON
sc-1149	294	16	takes	take	VERB
sc-1149	294	17	object	object	NOUN
sc-1149	294	18	as	as	ADP
sc-1149	294	19	input	input	NOUN
sc-1149	294	20	and	and	CCONJ
sc-1149	294	21	returns	return	VERB
sc-1149	294	22	a	a	DET
sc-1149	294	23	value	value	NOUN
sc-1149	294	24	from	from	ADP
sc-1149	294	25	the	the	DET
sc-1149	294	26	attribute	attribute	NOUN
sc-1149	294	27	’s	’s	PART
sc-1149	294	28	range	range	NOUN
sc-1149	294	29	.	.	PUNCT
sc-1149	295	1	(	(	PUNCT
sc-1149	295	2	obj1	obj1	PROPN
sc-1149	295	3	:	:	PUNCT
sc-1149	295	4	attr1	attr1	NOUN
sc-1149	295	5	:	:	PUNCT
sc-1149	295	6	val1	val1	PROPN
sc-1149	295	7	)	)	PUNCT
sc-1149	295	8	means	mean	VERB
sc-1149	295	9	that	that	SCONJ
sc-1149	295	10	for	for	ADP
sc-1149	295	11	the	the	DET
sc-1149	295	12	object	object	NOUN
sc-1149	295	13	obj1	obj1	ADV
sc-1149	295	14	the	the	DET
sc-1149	295	15	value	value	NOUN
sc-1149	295	16	of	of	ADP
sc-1149	295	17	the	the	DET
sc-1149	295	18	attribute	attribute	NOUN
sc-1149	295	19	attr1	attr1	PROPN
sc-1149	295	20	is	be	AUX
sc-1149	295	21	val1	val1	PROPN
sc-1149	295	22	.	.	PUNCT
sc-1149	296	1	furthermore	furthermore	ADV
sc-1149	296	2	,	,	PUNCT
sc-1149	296	3	the	the	DET
sc-1149	296	4	cloud	cloud	NOUN
sc-1149	296	5	administrator	administrator	NOUN
sc-1149	296	6	defines	define	VERB
sc-1149	296	7	the	the	DET
sc-1149	296	8	attribute	attribute	NOUN
sc-1149	296	9	function	function	VERB
sc-1149	296	10	oowner	oowner	NOUN
sc-1149	296	11	to	to	PART
sc-1149	296	12	specify	specify	VERB
sc-1149	296	13	the	the	DET
sc-1149	296	14	object	object	NOUN
sc-1149	296	15	owner	owner	NOUN
sc-1149	296	16	.	.	PUNCT
sc-1149	297	1	for	for	ADP
sc-1149	297	2	instance	instance	NOUN
sc-1149	297	3	(	(	PUNCT
sc-1149	297	4	mr1	mr1	PROPN
sc-1149	297	5	:	:	PUNCT
sc-1149	297	6	uowner	uowner	NOUN
sc-1149	297	7	:	:	PUNCT
sc-1149	297	8	acc_hh	acc_hh	NUM
sc-1149	297	9	)	)	PUNCT
sc-1149	297	10	means	mean	VERB
sc-1149	297	11	that	that	SCONJ
sc-1149	297	12	the	the	DET
sc-1149	297	13	object	object	NOUN
sc-1149	297	14	mr1	mr1	NOUN
sc-1149	297	15	is	be	AUX
sc-1149	297	16	owned	own	VERB
sc-1149	297	17	by	by	ADP
sc-1149	297	18	the	the	DET
sc-1149	297	19	account	account	NOUN
sc-1149	297	20	acc_hh	acc_hh	PROPN
sc-1149	297	21	.	.	PUNCT
sc-1149	298	1	finally	finally	ADV
sc-1149	298	2	,	,	PUNCT
sc-1149	298	3	the	the	DET
sc-1149	298	4	administrator	administrator	NOUN
sc-1149	298	5	defines	define	VERB
sc-1149	298	6	the	the	DET
sc-1149	298	7	attribute	attribute	NOUN
sc-1149	298	8	function	function	NOUN
sc-1149	298	9	sharedcs	sharedc	NOUN
sc-1149	298	10	to	to	PART
sc-1149	298	11	specify	specify	VERB
sc-1149	298	12	which	which	DET
sc-1149	298	13	objects	object	NOUN
sc-1149	298	14	could	could	AUX
sc-1149	298	15	be	be	AUX
sc-1149	298	16	shared	share	VERB
sc-1149	298	17	in	in	ADP
sc-1149	298	18	the	the	DET
sc-1149	298	19	collaborative	collaborative	ADJ
sc-1149	298	20	session	session	NOUN
sc-1149	298	21	.	.	PUNCT
sc-1149	299	1	for	for	ADP
sc-1149	299	2	example	example	NOUN
sc-1149	299	3	,	,	PUNCT
sc-1149	299	4	(	(	PUNCT
sc-1149	299	5	p	p	PRON
sc-1149	299	6	er_inf	er_inf	PROPN
sc-1149	299	7	o1	o1	NOUN
sc-1149	299	8	:	:	PUNCT
sc-1149	299	9	sharedcs	sharedc	NOUN
sc-1149	299	10	:	:	PUNCT
sc-1149	299	11	f	f	PROPN
sc-1149	299	12	alse	alse	PROPN
sc-1149	299	13	)	)	PUNCT
sc-1149	299	14	means	mean	VERB
sc-1149	299	15	that	that	SCONJ
sc-1149	299	16	the	the	DET
sc-1149	299	17	object	object	NOUN
sc-1149	299	18	p	p	PROPN
sc-1149	299	19	er_inf	er_inf	PROPN
sc-1149	299	20	o1	o1	NOUN
sc-1149	299	21	(	(	PUNCT
sc-1149	299	22	personal	personal	ADJ
sc-1149	299	23	information	information	NOUN
sc-1149	299	24	)	)	PUNCT
sc-1149	299	25	could	could	AUX
sc-1149	299	26	not	not	PART
sc-1149	299	27	be	be	AUX
sc-1149	299	28	shared	share	VERB
sc-1149	299	29	in	in	ADP
sc-1149	299	30	the	the	DET
sc-1149	299	31	collaborative	collaborative	ADJ
sc-1149	299	32	session	session	NOUN
sc-1149	299	33	.	.	PUNCT
sc-1149	300	1	•	•	NUM
sc-1149	300	2	task	task	NOUN
sc-1149	300	3	attributes	attribute	VERB
sc-1149	300	4	:	:	PUNCT
sc-1149	300	5	the	the	DET
sc-1149	300	6	administrator	administrator	NOUN
sc-1149	300	7	assigns	assign	VERB
sc-1149	300	8	the	the	DET
sc-1149	300	9	task	task	NOUN
sc-1149	300	10	attributes	attribute	VERB
sc-1149	300	11	as	as	ADP
sc-1149	300	12	a	a	DET
sc-1149	300	13	function	function	NOUN
sc-1149	300	14	that	that	PRON
sc-1149	300	15	takes	take	VERB
sc-1149	300	16	task	task	NOUN
sc-1149	300	17	instance	instance	NOUN
sc-1149	300	18	as	as	ADP
sc-1149	300	19	input	input	NOUN
sc-1149	300	20	and	and	CCONJ
sc-1149	300	21	returns	return	VERB
sc-1149	300	22	a	a	DET
sc-1149	300	23	value	value	NOUN
sc-1149	300	24	from	from	ADP
sc-1149	300	25	the	the	DET
sc-1149	300	26	attribute	attribute	NOUN
sc-1149	300	27	’s	’s	PART
sc-1149	300	28	range	range	NOUN
sc-1149	300	29	.	.	PUNCT
sc-1149	301	1	(	(	PUNCT
sc-1149	301	2	ti1	ti1	PROPN
sc-1149	301	3	:	:	PUNCT
sc-1149	301	4	attr1	attr1	NOUN
sc-1149	301	5	:	:	PUNCT
sc-1149	301	6	val1	val1	PROPN
sc-1149	301	7	)	)	PUNCT
sc-1149	301	8	means	mean	VERB
sc-1149	301	9	that	that	SCONJ
sc-1149	301	10	for	for	SCONJ
sc-1149	301	11	the	the	DET
sc-1149	301	12	task	task	PROPN
sc-1149	301	13	instance	instance	PROPN
sc-1149	301	14	ti1	ti1	PROPN
sc-1149	301	15	the	the	DET
sc-1149	301	16	value	value	NOUN
sc-1149	301	17	of	of	ADP
sc-1149	301	18	the	the	DET
sc-1149	301	19	attribute	attribute	NOUN
sc-1149	301	20	attr1	attr1	PROPN
sc-1149	301	21	is	be	AUX
sc-1149	301	22	val1	val1	PROPN
sc-1149	301	23	.	.	PUNCT
sc-1149	302	1	furthermore	furthermore	ADV
sc-1149	302	2	,	,	PUNCT
sc-1149	302	3	the	the	DET
sc-1149	302	4	cloud	cloud	NOUN
sc-1149	302	5	administrator	administrator	NOUN
sc-1149	302	6	defines	define	VERB
sc-1149	302	7	the	the	DET
sc-1149	302	8	attribute	attribute	NOUN
sc-1149	302	9	function	function	NOUN
sc-1149	302	10	towner	towner	NOUN
sc-1149	302	11	to	to	PART
sc-1149	302	12	specify	specify	VERB
sc-1149	302	13	the	the	DET
sc-1149	302	14	task	task	NOUN
sc-1149	302	15	owner	owner	NOUN
sc-1149	302	16	.	.	PUNCT
sc-1149	303	1	for	for	ADP
sc-1149	303	2	instance	instance	NOUN
sc-1149	303	3	(	(	PUNCT
sc-1149	303	4	ti1	ti1	PROPN
sc-1149	303	5	:	:	PUNCT
sc-1149	303	6	towner	towner	NOUN
sc-1149	303	7	:	:	PUNCT
sc-1149	303	8	acc_ems	acc_em	NOUN
sc-1149	303	9	)	)	PUNCT
sc-1149	303	10	means	mean	VERB
sc-1149	303	11	that	that	SCONJ
sc-1149	303	12	the	the	DET
sc-1149	303	13	task	task	NOUN
sc-1149	303	14	instance	instance	NOUN
sc-1149	303	15	ti	ti	PROPN
sc-1149	303	16	is	be	AUX
sc-1149	303	17	performed	perform	VERB
sc-1149	303	18	by	by	ADP
sc-1149	303	19	the	the	DET
sc-1149	303	20	account	account	NOUN
sc-1149	303	21	acc_ems	acc_ems	PROPN
sc-1149	303	22	.	.	PUNCT
sc-1149	304	1	•	•	NUM
sc-1149	304	2	compound	compound	NOUN
sc-1149	304	3	attributes	attribute	VERB
sc-1149	304	4	:	:	PUNCT
sc-1149	304	5	the	the	DET
sc-1149	304	6	administrator	administrator	NOUN
sc-1149	304	7	of	of	ADP
sc-1149	304	8	the	the	DET
sc-1149	304	9	local	local	ADJ
sc-1149	304	10	tenant	tenant	NOUN
sc-1149	304	11	defines	define	VERB
sc-1149	304	12	the	the	DET
sc-1149	304	13	new	new	ADJ
sc-1149	304	14	attributes	attribute	NOUN
sc-1149	304	15	assigneduser	assigneduser	NOUN
sc-1149	304	16	and	and	CCONJ
sc-1149	304	17	usedobject	usedobject	VERB
sc-1149	304	18	with	with	ADP
sc-1149	304	19	a	a	DET
sc-1149	304	20	confidential	confidential	ADJ
sc-1149	304	21	and	and	CCONJ
sc-1149	304	22	an	an	DET
sc-1149	304	23	autonomy	autonomy	NOUN
sc-1149	304	24	way	way	NOUN
sc-1149	304	25	.	.	PUNCT
sc-1149	305	1	these	these	DET
sc-1149	305	2	compound	compound	NOUN
sc-1149	305	3	attributes	attribute	NOUN
sc-1149	305	4	are	be	AUX
sc-1149	305	5	specified	specify	VERB
sc-1149	305	6	here	here	ADV
sc-1149	305	7	as	as	SCONJ
sc-1149	305	8	follows	follow	VERB
sc-1149	305	9	:	:	PUNCT
sc-1149	306	1	usedobject|scan	usedobject|scan	ADJ
sc-1149	306	2	|write|hh	|write|hh	NOUN
sc-1149	306	3	:	:	PUNCT
sc-1149	306	4	−o	−o	ADJ
sc-1149	306	5	:	:	PUNCT
sc-1149	306	6	objectt	objectt	ADJ
sc-1149	306	7	ype	ype	NOUN
sc-1149	306	8	:	:	PUNCT
sc-1149	306	9	scan	scan	PROPN
sc-1149	306	10	∧	∧	PROPN
sc-1149	306	11	o	o	NOUN
sc-1149	306	12	:	:	PUNCT
sc-1149	306	13	sensitivity	sensitivity	NOUN
sc-1149	306	14	:	:	PUNCT
sc-1149	307	1	class0|class1|class2	class0|class1|class2	PROPN
sc-1149	307	2	,	,	PUNCT
sc-1149	307	3	which	which	PRON
sc-1149	307	4	means	mean	VERB
sc-1149	307	5	that	that	SCONJ
sc-1149	307	6	this	this	DET
sc-1149	307	7	attribute	attribute	NOUN
sc-1149	307	8	is	be	AUX
sc-1149	307	9	true	true	ADJ
sc-1149	307	10	if	if	SCONJ
sc-1149	307	11	only	only	ADV
sc-1149	307	12	if	if	SCONJ
sc-1149	307	13	:	:	PUNCT
sc-1149	307	14	(	(	PUNCT
sc-1149	307	15	1	1	X
sc-1149	307	16	)	)	PUNCT
sc-1149	307	17	the	the	DET
sc-1149	307	18	object	object	NOUN
sc-1149	307	19	o	o	NOUN
sc-1149	307	20	of	of	ADP
sc-1149	307	21	the	the	DET
sc-1149	307	22	type	type	NOUN
sc-1149	307	23	scan	scan	NOUN
sc-1149	307	24	;	;	PUNCT
sc-1149	307	25	the	the	DET
sc-1149	307	26	sensitivity	sensitivity	NOUN
sc-1149	307	27	class	class	NOUN
sc-1149	307	28	of	of	ADP
sc-1149	307	29	object	object	NOUN
sc-1149	307	30	o	o	NOUN
sc-1149	307	31	is	be	AUX
sc-1149	307	32	less	less	ADJ
sc-1149	307	33	than	than	ADP
sc-1149	307	34	or	or	CCONJ
sc-1149	307	35	equal	equal	ADJ
sc-1149	307	36	to	to	ADP
sc-1149	307	37	class2	class2	PROPN
sc-1149	307	38	.	.	PROPN
sc-1149	307	39	•	•	NUM
sc-1149	307	40	authorizations	authorization	NOUN
sc-1149	307	41	:	:	PUNCT
sc-1149	307	42	the	the	DET
sc-1149	307	43	administrator	administrator	NOUN
sc-1149	307	44	specifies	specify	VERB
sc-1149	307	45	the	the	DET
sc-1149	307	46	authorizations	authorization	NOUN
sc-1149	307	47	policy	policy	NOUN
sc-1149	307	48	.	.	PUNCT
sc-1149	308	1	in	in	ADP
sc-1149	308	2	our	our	PRON
sc-1149	308	3	scenario	scenario	NOUN
sc-1149	308	4	,	,	PUNCT
sc-1149	308	5	we	we	PRON
sc-1149	308	6	consider	consider	VERB
sc-1149	308	7	that	that	SCONJ
sc-1149	308	8	each	each	DET
sc-1149	308	9	tenant	tenant	NOUN
sc-1149	308	10	defines	define	VERB
sc-1149	308	11	its	its	PRON
sc-1149	308	12	policy	policy	NOUN
sc-1149	308	13	rules	rule	NOUN
sc-1149	308	14	.	.	PUNCT
sc-1149	309	1	note	note	VERB
sc-1149	309	2	that	that	SCONJ
sc-1149	309	3	at	at	ADP
sc-1149	309	4	this	this	DET
sc-1149	309	5	level	level	NOUN
sc-1149	309	6	,	,	PUNCT
sc-1149	309	7	we	we	PRON
sc-1149	309	8	suppose	suppose	VERB
sc-1149	309	9	that	that	SCONJ
sc-1149	309	10	the	the	DET
sc-1149	309	11	security	security	NOUN
sc-1149	309	12	policy	policy	NOUN
sc-1149	309	13	rules	rule	NOUN
sc-1149	309	14	are	be	AUX
sc-1149	309	15	valid	valid	ADJ
sc-1149	309	16	and	and	CCONJ
sc-1149	309	17	conflict	conflict	NOUN
sc-1149	309	18	-	-	PUNCT
sc-1149	309	19	free	free	ADJ
sc-1149	309	20	.	.	PUNCT
sc-1149	310	1	the	the	DET
sc-1149	310	2	policy	policy	NOUN
sc-1149	310	3	rules	rule	NOUN
sc-1149	310	4	are	be	AUX
sc-1149	310	5	specified	specify	VERB
sc-1149	310	6	here	here	ADV
sc-1149	310	7	as	as	SCONJ
sc-1149	310	8	follows	follow	VERB
sc-1149	310	9	:	:	PUNCT
sc-1149	310	10	write	write	VERB
sc-1149	310	11	−	−	PROPN
sc-1149	310	12	ti	ti	NOUN
sc-1149	310	13	:	:	PUNCT
sc-1149	310	14	task	task	NOUN
sc-1149	310	15	:	:	PUNCT
sc-1149	310	16	interpret_scan	interpret_scan	PROPN
sc-1149	310	17	∧	∧	PROPN
sc-1149	310	18	ti	ti	NOUN
sc-1149	310	19	:	:	PUNCT
sc-1149	310	20	workf	workf	VERB
sc-1149	310	21	low	low	ADJ
sc-1149	310	22	:	:	PUNCT
sc-1149	310	23	tenemo	tenemo	NOUN
sc-1149	310	24	∧	∧	PROPN
sc-1149	310	25	ti	ti	NOUN
sc-1149	310	26	:	:	PUNCT
sc-1149	310	27	previoustask	previoustask	NOUN
sc-1149	310	28	:	:	PUNCT
sc-1149	310	29	true	true	ADJ
sc-1149	310	30	∧	∧	PROPN
sc-1149	310	31	ti	ti	NOUN
sc-1149	310	32	:	:	PUNCT
sc-1149	310	33	csession	csession	NOUN
sc-1149	310	34	:	:	PUNCT
sc-1149	311	1	cs1	cs1	PROPN
sc-1149	311	2	∧	∧	PROPN
sc-1149	311	3	u	u	PROPN
sc-1149	311	4	:	:	PUNCT
sc-1149	311	5	membercs	membercs	NOUN
sc-1149	311	6	:	:	PUNCT
sc-1149	311	7	cs1	cs1	PROPN
sc-1149	311	8	∧	∧	PROPN
sc-1149	311	9	o	o	PROPN
sc-1149	311	10	:	:	PUNCT
sc-1149	311	11	sharedcs	sharedc	NOUN
sc-1149	311	12	:	:	PUNCT
sc-1149	311	13	cs1	cs1	PROPN
sc-1149	311	14	∧	∧	PROPN
sc-1149	311	15	u	u	PROPN
sc-1149	311	16	:	:	PUNCT
sc-1149	311	17	assigneduser	assigneduser	NOUN
sc-1149	311	18	|t	|t	PROPN
sc-1149	312	1	5|sh	5|sh	NUM
sc-1149	312	2	:	:	PUNCT
sc-1149	312	3	t	t	PROPN
sc-1149	312	4	rue	rue	X
sc-1149	312	5	∧	∧	PROPN
sc-1149	312	6	o	o	NOUN
sc-1149	312	7	:	:	PUNCT
sc-1149	312	8	usedobject|scan	usedobject|scan	ADJ
sc-1149	312	9	|write|hh	|write|hh	PROPN
sc-1149	312	10	:	:	PUNCT
sc-1149	312	11	t	t	PROPN
sc-1149	312	12	rue	rue	PROPN
sc-1149	312	13	,	,	PUNCT
sc-1149	312	14	which	which	PRON
sc-1149	312	15	means	mean	VERB
sc-1149	312	16	that	that	SCONJ
sc-1149	312	17	for	for	ADP
sc-1149	312	18	the	the	DET
sc-1149	312	19	action	action	NOUN
sc-1149	312	20	write	write	VERB
sc-1149	312	21	’	'	PUNCT
sc-1149	312	22	,	,	PUNCT
sc-1149	312	23	this	this	DET
sc-1149	312	24	authorization	authorization	NOUN
sc-1149	312	25	is	be	AUX
sc-1149	312	26	valid	valid	ADJ
sc-1149	312	27	if	if	SCONJ
sc-1149	312	28	only	only	ADV
sc-1149	312	29	if	if	SCONJ
sc-1149	312	30	:	:	PUNCT
sc-1149	312	31	(	(	PUNCT
sc-1149	312	32	1	1	X
sc-1149	312	33	)	)	PUNCT
sc-1149	312	34	the	the	DET
sc-1149	312	35	instance	instance	NOUN
sc-1149	312	36	ti	ti	NOUN
sc-1149	312	37	is	be	AUX
sc-1149	312	38	instancied	instancie	VERB
sc-1149	312	39	of	of	ADP
sc-1149	312	40	the	the	DET
sc-1149	312	41	task	task	NOUN
sc-1149	312	42	interpret_scan	interpret_scan	PROPN
sc-1149	312	43	;	;	PUNCT
sc-1149	312	44	(	(	PUNCT
sc-1149	312	45	2	2	X
sc-1149	312	46	)	)	PUNCT
sc-1149	312	47	the	the	DET
sc-1149	312	48	task	task	NOUN
sc-1149	312	49	instance	instance	NOUN
sc-1149	312	50	ti	ti	PROPN
sc-1149	312	51	belongs	belong	VERB
sc-1149	312	52	to	to	ADP
sc-1149	312	53	the	the	DET
sc-1149	312	54	workflow	workflow	NOUN
sc-1149	312	55	tenemo	tenemo	NOUN
sc-1149	312	56	;	;	PUNCT
sc-1149	312	57	(	(	PUNCT
sc-1149	312	58	3	3	X
sc-1149	312	59	)	)	PUNCT
sc-1149	312	60	the	the	DET
sc-1149	312	61	previous	previous	ADJ
sc-1149	312	62	task	task	NOUN
sc-1149	312	63	instances	instance	NOUN
sc-1149	312	64	of	of	ADP
sc-1149	312	65	the	the	DET
sc-1149	312	66	ti	ti	NOUN
sc-1149	312	67	are	be	AUX
sc-1149	312	68	accomplished	accomplish	VERB
sc-1149	312	69	;	;	PUNCT
sc-1149	312	70	(	(	PUNCT
sc-1149	312	71	4	4	X
sc-1149	312	72	)	)	PUNCT
sc-1149	312	73	there	there	PRON
sc-1149	312	74	is	be	VERB
sc-1149	312	75	a	a	DET
sc-1149	312	76	collaborative	collaborative	ADJ
sc-1149	312	77	session	session	NOUN
sc-1149	312	78	in	in	ADP
sc-1149	312	79	which	which	PRON
sc-1149	312	80	the	the	DET
sc-1149	312	81	task	task	NOUN
sc-1149	312	82	runs	run	VERB
sc-1149	312	83	;	;	PUNCT
sc-1149	312	84	(	(	PUNCT
sc-1149	312	85	5	5	X
sc-1149	312	86	)	)	PUNCT
sc-1149	312	87	the	the	DET
sc-1149	312	88	user	user	NOUN
sc-1149	312	89	u	u	PROPN
sc-1149	312	90	is	be	AUX
sc-1149	312	91	member	member	NOUN
sc-1149	312	92	of	of	ADP
sc-1149	312	93	the	the	DET
sc-1149	312	94	collaborative	collaborative	ADJ
sc-1149	312	95	session	session	NOUN
sc-1149	312	96	cs	cs	X
sc-1149	312	97	;	;	PUNCT
sc-1149	312	98	(	(	PUNCT
sc-1149	312	99	6	6	X
sc-1149	312	100	)	)	PUNCT
sc-1149	312	101	the	the	DET
sc-1149	312	102	object	object	NOUN
sc-1149	312	103	o	o	NOUN
sc-1149	312	104	is	be	AUX
sc-1149	312	105	shared	share	VERB
sc-1149	312	106	in	in	ADP
sc-1149	312	107	the	the	DET
sc-1149	312	108	session	session	NOUN
sc-1149	312	109	cs	cs	NOUN
sc-1149	312	110	;	;	PUNCT
sc-1149	312	111	(	(	PUNCT
sc-1149	312	112	7	7	X
sc-1149	312	113	)	)	PUNCT
sc-1149	312	114	the	the	DET
sc-1149	312	115	tenant	tenant	NOUN
sc-1149	312	116	sh	sh	PROPN
sc-1149	312	117	authorizes	authorize	VERB
sc-1149	312	118	his	his	PRON
sc-1149	312	119	user	user	NOUN
sc-1149	312	120	u	u	NOUN
sc-1149	312	121	to	to	PART
sc-1149	312	122	perform	perform	VERB
sc-1149	312	123	the	the	DET
sc-1149	312	124	task	task	NOUN
sc-1149	312	125	t	t	PROPN
sc-1149	312	126	5	5	NUM
sc-1149	312	127	;	;	PUNCT
sc-1149	312	128	(	(	PUNCT
sc-1149	312	129	8)	8)	X
sc-1149	312	130	the	the	DET
sc-1149	312	131	tenant	tenant	NOUN
sc-1149	312	132	hh	hh	VERB
sc-1149	312	133	shares	share	VERB
sc-1149	312	134	the	the	DET
sc-1149	312	135	object	object	NOUN
sc-1149	312	136	o	o	NOUN
sc-1149	312	137	of	of	ADP
sc-1149	312	138	the	the	DET
sc-1149	312	139	type	type	NOUN
sc-1149	312	140	scan	scan	NOUN
sc-1149	312	141	with	with	ADP
sc-1149	312	142	others	other	NOUN
sc-1149	312	143	collaborative	collaborative	ADJ
sc-1149	312	144	tenants	tenant	NOUN
sc-1149	312	145	for	for	ADP
sc-1149	312	146	the	the	DET
sc-1149	312	147	action	action	NOUN
sc-1149	312	148	write	write	VERB
sc-1149	312	149	.	.	PUNCT
sc-1149	313	1	•	•	NUM
sc-1149	313	2	policy	policy	NOUN
sc-1149	313	3	decision	decision	NOUN
sc-1149	313	4	:	:	PUNCT
sc-1149	313	5	this	this	DET
sc-1149	313	6	component	component	NOUN
sc-1149	313	7	is	be	AUX
sc-1149	313	8	responsible	responsible	ADJ
sc-1149	313	9	for	for	ADP
sc-1149	313	10	evaluating	evaluate	VERB
sc-1149	313	11	the	the	DET
sc-1149	313	12	access	access	NOUN
sc-1149	313	13	request	request	NOUN
sc-1149	313	14	to	to	ADP
sc-1149	313	15	the	the	DET
sc-1149	313	16	resources	resource	NOUN
sc-1149	313	17	in	in	ADP
sc-1149	313	18	the	the	DET
sc-1149	313	19	collaborative	collaborative	ADJ
sc-1149	313	20	session	session	NOUN
sc-1149	313	21	based	base	VERB
sc-1149	313	22	on	on	ADP
sc-1149	313	23	the	the	DET
sc-1149	313	24	collected	collect	VERB
sc-1149	313	25	attributes	attribute	NOUN
sc-1149	313	26	values	value	NOUN
sc-1149	313	27	and	and	CCONJ
sc-1149	313	28	authorizations	authorization	NOUN
sc-1149	313	29	.	.	PUNCT
sc-1149	314	1	when	when	SCONJ
sc-1149	314	2	a	a	DET
sc-1149	314	3	user	user	NOUN
sc-1149	314	4	sends	send	VERB
sc-1149	314	5	a	a	DET
sc-1149	314	6	request	request	NOUN
sc-1149	314	7	to	to	PART
sc-1149	314	8	access	access	VERB
sc-1149	314	9	a	a	DET
sc-1149	314	10	resource	resource	NOUN
sc-1149	314	11	stored	store	VERB
sc-1149	314	12	in	in	ADP
sc-1149	314	13	the	the	DET
sc-1149	314	14	cloud	cloud	NOUN
sc-1149	314	15	swift	swift	NOUN
sc-1149	314	16	,	,	PUNCT
sc-1149	314	17	the	the	DET
sc-1149	314	18	policy	policy	NOUN
sc-1149	314	19	decision	decision	NOUN
sc-1149	314	20	component	component	NOUN
sc-1149	314	21	evaluates	evaluate	VERB
sc-1149	314	22	this	this	DET
sc-1149	314	23	request	request	NOUN
sc-1149	314	24	according	accord	VERB
sc-1149	314	25	to	to	ADP
sc-1149	314	26	the	the	DET
sc-1149	314	27	policy	policy	NOUN
sc-1149	314	28	rules	rule	NOUN
sc-1149	314	29	in	in	ADP
sc-1149	314	30	order	order	NOUN
sc-1149	314	31	to	to	PART
sc-1149	314	32	decide	decide	VERB
sc-1149	314	33	whether	whether	SCONJ
sc-1149	314	34	the	the	DET
sc-1149	314	35	user	user	NOUN
sc-1149	314	36	is	be	AUX
sc-1149	314	37	authorized	authorize	VERB
sc-1149	314	38	to	to	PART
sc-1149	314	39	access	access	VERB
sc-1149	314	40	this	this	DET
sc-1149	314	41	resource	resource	NOUN
sc-1149	314	42	or	or	CCONJ
sc-1149	314	43	not	not	PART
sc-1149	314	44	.	.	PUNCT
sc-1149	315	1	5.2	5.2	NUM
sc-1149	315	2	.	.	PUNCT
sc-1149	316	1	enforcement	enforcement	NOUN
sc-1149	316	2	model	model	NOUN
sc-1149	316	3	a	a	DET
sc-1149	316	4	general	general	ADJ
sc-1149	316	5	authorization	authorization	NOUN
sc-1149	316	6	process	process	NOUN
sc-1149	316	7	for	for	ADP
sc-1149	316	8	swift	swift	ADJ
sc-1149	316	9	component	component	NOUN
sc-1149	316	10	with	with	ADP
sc-1149	316	11	c	c	NOUN
sc-1149	316	12	-	-	PUNCT
sc-1149	316	13	abac	abac	ADJ
sc-1149	316	14	module	module	NOUN
sc-1149	316	15	is	be	AUX
sc-1149	316	16	illustrated	illustrate	VERB
sc-1149	316	17	in	in	ADP
sc-1149	316	18	figure	figure	NOUN
sc-1149	316	19	9	9	NUM
sc-1149	316	20	.	.	PUNCT
sc-1149	317	1	when	when	SCONJ
sc-1149	317	2	the	the	DET
sc-1149	317	3	user	user	NOUN
sc-1149	317	4	user1	user1	PROPN
sc-1149	317	5	attempts	attempt	VERB
sc-1149	317	6	to	to	PART
sc-1149	317	7	access	access	VERB
sc-1149	317	8	the	the	DET
sc-1149	317	9	resource	resource	NOUN
sc-1149	317	10	mr1	mr1	PROPN
sc-1149	317	11	stored	store	VERB
sc-1149	317	12	in	in	ADP
sc-1149	317	13	the	the	DET
sc-1149	317	14	swift	swift	NOUN
sc-1149	317	15	.	.	PUNCT
sc-1149	318	1	first	first	ADV
sc-1149	318	2	,	,	PUNCT
sc-1149	318	3	(	(	PUNCT
sc-1149	318	4	1	1	X
sc-1149	318	5	)	)	PUNCT
sc-1149	318	6	the	the	DET
sc-1149	318	7	user	user	NOUN
sc-1149	318	8	requests	request	VERB
sc-1149	318	9	keystone	keystone	PROPN
sc-1149	318	10	to	to	PART
sc-1149	318	11	get	get	VERB
sc-1149	318	12	his	his	PRON
sc-1149	318	13	/	/	SYM
sc-1149	318	14	her	she	PRON
sc-1149	318	15	token	token	ADJ
sc-1149	318	16	.	.	PUNCT
sc-1149	319	1	(	(	PUNCT
sc-1149	319	2	2	2	X
sc-1149	319	3	)	)	PUNCT
sc-1149	319	4	keystone	keystone	NOUN
sc-1149	319	5	generates	generate	VERB
sc-1149	319	6	a	a	DET
sc-1149	319	7	token	token	NOUN
sc-1149	319	8	and	and	CCONJ
sc-1149	319	9	sends	send	VERB
sc-1149	319	10	it	it	PRON
sc-1149	319	11	to	to	ADP
sc-1149	319	12	the	the	DET
sc-1149	319	13	user	user	NOUN
sc-1149	319	14	.	.	PUNCT
sc-1149	320	1	(	(	PUNCT
sc-1149	320	2	3	3	X
sc-1149	320	3	)	)	PUNCT
sc-1149	320	4	the	the	DET
sc-1149	320	5	user	user	NOUN
sc-1149	320	6	sends	send	VERB
sc-1149	320	7	a	a	DET
sc-1149	320	8	request	request	NOUN
sc-1149	320	9	to	to	ADP
sc-1149	320	10	abac	abac	ADJ
sc-1149	320	11	module	module	NOUN
sc-1149	320	12	by	by	ADP
sc-1149	320	13	using	use	VERB
sc-1149	320	14	his	his	PRON
sc-1149	320	15	/	/	SYM
sc-1149	320	16	her	she	PRON
sc-1149	320	17	token	token	VERB
sc-1149	320	18	to	to	PART
sc-1149	320	19	access	access	VERB
sc-1149	320	20	the	the	DET
sc-1149	320	21	resource	resource	NOUN
sc-1149	320	22	mr1	mr1	PROPN
sc-1149	320	23	.	.	PUNCT
sc-1149	321	1	the	the	DET
sc-1149	321	2	policy	policy	NOUN
sc-1149	321	3	decision	decision	NOUN
sc-1149	321	4	component	component	NOUN
sc-1149	321	5	receives	receive	VERB
sc-1149	321	6	this	this	DET
sc-1149	321	7	request	request	NOUN
sc-1149	321	8	to	to	PART
sc-1149	321	9	evaluate	evaluate	VERB
sc-1149	321	10	it	it	PRON
sc-1149	321	11	.	.	PUNCT
sc-1149	322	1	(	(	PUNCT
sc-1149	322	2	4	4	NUM
sc-1149	322	3	)	)	PUNCT
sc-1149	322	4	during	during	ADP
sc-1149	322	5	the	the	DET
sc-1149	322	6	evaluation	evaluation	NOUN
sc-1149	322	7	process	process	NOUN
sc-1149	322	8	,	,	PUNCT
sc-1149	322	9	the	the	DET
sc-1149	322	10	policy	policy	NOUN
sc-1149	322	11	decision	decision	NOUN
sc-1149	322	12	component	component	NOUN
sc-1149	322	13	requests	request	VERB
sc-1149	322	14	the	the	DET
sc-1149	322	15	components	component	NOUN
sc-1149	322	16	:	:	PUNCT
sc-1149	322	17	user	user	NOUN
sc-1149	322	18	attributes	attribute	VERB
sc-1149	322	19	,	,	PUNCT
sc-1149	322	20	object	object	VERB
sc-1149	322	21	attributes	attribute	NOUN
sc-1149	322	22	and	and	CCONJ
sc-1149	322	23	task	task	NOUN
sc-1149	322	24	attributes	attribute	NOUN
sc-1149	322	25	(	(	PUNCT
sc-1149	322	26	5	5	NUM
sc-1149	322	27	)	)	PUNCT
sc-1149	322	28	to	to	PART
sc-1149	322	29	receive	receive	VERB
sc-1149	322	30	user1	user1	PROPN
sc-1149	322	31	’s	’s	PART
sc-1149	322	32	attributes	attribute	NOUN
sc-1149	322	33	,	,	PUNCT
sc-1149	322	34	mr1	mr1	PROPN
sc-1149	322	35	’s	’s	PART
sc-1149	322	36	attributes	attribute	NOUN
sc-1149	322	37	and	and	CCONJ
sc-1149	322	38	the	the	DET
sc-1149	322	39	attributes	attribute	NOUN
sc-1149	322	40	related	relate	VERB
sc-1149	322	41	to	to	ADP
sc-1149	322	42	the	the	DET
sc-1149	322	43	collaborative	collaborative	ADJ
sc-1149	322	44	session	session	NOUN
sc-1149	322	45	wherein	wherein	SCONJ
sc-1149	322	46	this	this	DET
sc-1149	322	47	user	user	NOUN
sc-1149	322	48	is	be	AUX
sc-1149	322	49	member	member	NOUN
sc-1149	322	50	.	.	PUNCT
sc-1149	323	1	(	(	PUNCT
sc-1149	323	2	6	6	NUM
sc-1149	323	3	)	)	PUNCT
sc-1149	323	4	the	the	DET
sc-1149	323	5	policy	policy	NOUN
sc-1149	323	6	decision	decision	NOUN
sc-1149	323	7	component	component	NOUN
sc-1149	323	8	requests	request	VERB
sc-1149	323	9	the	the	DET
sc-1149	323	10	authorizations	authorization	NOUN
sc-1149	323	11	component	component	NOUN
sc-1149	323	12	and	and	CCONJ
sc-1149	323	13	(	(	PUNCT
sc-1149	323	14	7	7	X
sc-1149	323	15	)	)	PUNCT
sc-1149	323	16	receives	receive	VERB
sc-1149	323	17	all	all	DET
sc-1149	323	18	the	the	DET
sc-1149	323	19	policy	policy	NOUN
sc-1149	323	20	rules	rule	NOUN
sc-1149	323	21	stored	store	VERB
sc-1149	323	22	in	in	ADP
sc-1149	323	23	this	this	DET
sc-1149	323	24	component	component	NOUN
sc-1149	323	25	.	.	PUNCT
sc-1149	324	1	these	these	DET
sc-1149	324	2	attributes	attribute	NOUN
sc-1149	324	3	and	and	CCONJ
sc-1149	324	4	10	10	NUM
sc-1149	324	5	eai	eai	NOUN
sc-1149	324	6	endorsed	endorse	VERB
sc-1149	324	7	transactions	transaction	NOUN
sc-1149	324	8	on	on	ADP
sc-1149	324	9	smart	smart	ADJ
sc-1149	324	10	cities	city	NOUN
sc-1149	324	11	02	02	NUM
sc-1149	324	12	2018	2018	NUM
sc-1149	324	13	06	06	NUM
sc-1149	324	14	2018	2018	NUM
sc-1149	324	15	|	|	ADV
sc-1149	324	16	volume	volume	NOUN
sc-1149	324	17	2	2	NUM
sc-1149	324	18	|	|	ADV
sc-1149	324	19	issue	issue	VERB
sc-1149	324	20	8	8	NUM
sc-1149	324	21	|	|	ADV
sc-1149	324	22	e3	e3	VERB
sc-1149	324	23	c	c	NOUN
sc-1149	324	24	-	-	PUNCT
sc-1149	324	25	abac	abac	ADJ
sc-1149	324	26	:	:	PUNCT
sc-1149	324	27	an	an	DET
sc-1149	324	28	abac	abac	ADJ
sc-1149	324	29	based	base	VERB
sc-1149	324	30	model	model	NOUN
sc-1149	324	31	for	for	ADP
sc-1149	324	32	collaboration	collaboration	NOUN
sc-1149	324	33	in	in	ADP
sc-1149	324	34	multi	multi	ADJ
sc-1149	324	35	-	-	ADJ
sc-1149	324	36	tenant	tenant	ADJ
sc-1149	324	37	environment	environment	NOUN
sc-1149	324	38	figure	figure	NOUN
sc-1149	324	39	9	9	NUM
sc-1149	324	40	.	.	PUNCT
sc-1149	325	1	the	the	DET
sc-1149	325	2	enforcement	enforcement	NOUN
sc-1149	325	3	model	model	NOUN
sc-1149	325	4	policy	policy	NOUN
sc-1149	325	5	rules	rule	NOUN
sc-1149	325	6	will	will	AUX
sc-1149	325	7	be	be	AUX
sc-1149	325	8	used	use	VERB
sc-1149	325	9	by	by	ADP
sc-1149	325	10	the	the	DET
sc-1149	325	11	policy	policy	NOUN
sc-1149	325	12	decision	decision	NOUN
sc-1149	325	13	to	to	PART
sc-1149	325	14	evaluate	evaluate	VERB
sc-1149	325	15	access	access	NOUN
sc-1149	325	16	request	request	NOUN
sc-1149	325	17	in	in	ADP
sc-1149	325	18	order	order	NOUN
sc-1149	325	19	to	to	PART
sc-1149	325	20	decide	decide	VERB
sc-1149	325	21	whether	whether	SCONJ
sc-1149	325	22	the	the	DET
sc-1149	325	23	user	user	NOUN
sc-1149	325	24	is	be	AUX
sc-1149	325	25	authorized	authorize	VERB
sc-1149	325	26	to	to	PART
sc-1149	325	27	access	access	VERB
sc-1149	325	28	this	this	DET
sc-1149	325	29	resource	resource	NOUN
sc-1149	325	30	or	or	CCONJ
sc-1149	325	31	not	not	PART
sc-1149	325	32	.	.	PUNCT
sc-1149	326	1	(	(	PUNCT
sc-1149	326	2	8)	8)	NUM
sc-1149	326	3	the	the	DET
sc-1149	326	4	policy	policy	NOUN
sc-1149	326	5	decision	decision	NOUN
sc-1149	326	6	will	will	AUX
sc-1149	326	7	execute	execute	VERB
sc-1149	326	8	an	an	DET
sc-1149	326	9	acl	acl	PROPN
sc-1149	326	10	command	command	NOUN
sc-1149	326	11	to	to	PART
sc-1149	326	12	assign	assign	VERB
sc-1149	326	13	the	the	DET
sc-1149	326	14	authorization	authorization	NOUN
sc-1149	326	15	decision	decision	NOUN
sc-1149	326	16	(	(	PUNCT
sc-1149	326	17	permit	permit	NOUN
sc-1149	326	18	or	or	CCONJ
sc-1149	326	19	deny	deny	VERB
sc-1149	326	20	)	)	PUNCT
sc-1149	326	21	to	to	ADP
sc-1149	326	22	the	the	DET
sc-1149	326	23	user	user	NOUN
sc-1149	326	24	in	in	ADP
sc-1149	326	25	the	the	DET
sc-1149	326	26	swift	swift	ADJ
sc-1149	326	27	environment	environment	NOUN
sc-1149	326	28	.	.	PUNCT
sc-1149	327	1	(	(	PUNCT
sc-1149	327	2	9	9	X
sc-1149	327	3	)	)	PUNCT
sc-1149	327	4	the	the	DET
sc-1149	327	5	policy	policy	NOUN
sc-1149	327	6	decision	decision	NOUN
sc-1149	327	7	component	component	NOUN
sc-1149	327	8	executes	execute	VERB
sc-1149	327	9	a	a	DET
sc-1149	327	10	swift	swift	ADJ
sc-1149	327	11	api	api	NOUN
sc-1149	327	12	command	command	NOUN
sc-1149	327	13	in	in	ADP
sc-1149	327	14	the	the	DET
sc-1149	327	15	swift	swift	ADJ
sc-1149	327	16	component	component	NOUN
sc-1149	327	17	using	use	VERB
sc-1149	327	18	user1	user1	PROPN
sc-1149	327	19	’s	’s	PART
sc-1149	327	20	token	token	VERB
sc-1149	327	21	in	in	ADP
sc-1149	327	22	order	order	NOUN
sc-1149	327	23	to	to	PART
sc-1149	327	24	send	send	VERB
sc-1149	327	25	the	the	DET
sc-1149	327	26	user1	user1	PROPN
sc-1149	327	27	’s	’s	PART
sc-1149	327	28	access	access	NOUN
sc-1149	327	29	request	request	NOUN
sc-1149	327	30	to	to	PART
sc-1149	327	31	swift	swift	VERB
sc-1149	327	32	.	.	PUNCT
sc-1149	328	1	(	(	PUNCT
sc-1149	328	2	10	10	NUM
sc-1149	328	3	)	)	PUNCT
sc-1149	328	4	user1	user1	NOUN
sc-1149	328	5	access	access	NOUN
sc-1149	328	6	to	to	ADP
sc-1149	328	7	the	the	DET
sc-1149	328	8	resource	resource	NOUN
sc-1149	328	9	mr1	mr1	PROPN
sc-1149	328	10	if	if	SCONJ
sc-1149	328	11	the	the	DET
sc-1149	328	12	authorization	authorization	NOUN
sc-1149	328	13	decision	decision	NOUN
sc-1149	328	14	is	be	AUX
sc-1149	328	15	permitted	permit	VERB
sc-1149	328	16	.	.	PUNCT
sc-1149	329	1	5.3	5.3	NUM
sc-1149	329	2	.	.	PUNCT
sc-1149	329	3	evaluation	evaluation	NOUN
sc-1149	329	4	in	in	ADP
sc-1149	329	5	this	this	DET
sc-1149	329	6	paper	paper	NOUN
sc-1149	329	7	,	,	PUNCT
sc-1149	329	8	we	we	PRON
sc-1149	329	9	implement	implement	VERB
sc-1149	329	10	the	the	DET
sc-1149	329	11	abac	abac	NOUN
sc-1149	329	12	and	and	CCONJ
sc-1149	329	13	c	c	NOUN
sc-1149	329	14	-	-	NOUN
sc-1149	329	15	abac	abac	ADJ
sc-1149	329	16	on	on	ADP
sc-1149	329	17	the	the	DET
sc-1149	329	18	swift	swift	ADJ
sc-1149	329	19	storage	storage	NOUN
sc-1149	329	20	component	component	NOUN
sc-1149	329	21	of	of	ADP
sc-1149	329	22	openstack	openstack	PROPN
sc-1149	329	23	.	.	PUNCT
sc-1149	330	1	our	our	PRON
sc-1149	330	2	experiments	experiment	NOUN
sc-1149	330	3	were	be	AUX
sc-1149	330	4	run	run	VERB
sc-1149	330	5	on	on	ADP
sc-1149	330	6	a	a	DET
sc-1149	330	7	virtual	virtual	ADJ
sc-1149	330	8	machine	machine	NOUN
sc-1149	330	9	with	with	ADP
sc-1149	330	10	the	the	DET
sc-1149	330	11	following	follow	VERB
sc-1149	330	12	characteristics	characteristic	NOUN
sc-1149	330	13	(	(	PUNCT
sc-1149	330	14	memory	memory	NOUN
sc-1149	330	15	1024	1024	NUM
sc-1149	330	16	mb	mb	NOUN
sc-1149	330	17	,	,	PUNCT
sc-1149	330	18	2	2	NUM
sc-1149	330	19	cores	core	NOUN
sc-1149	330	20	cpu	cpu	NOUN
sc-1149	330	21	,	,	PUNCT
sc-1149	330	22	hard	hard	ADJ
sc-1149	330	23	disk	disk	NOUN
sc-1149	330	24	30	30	NUM
sc-1149	330	25	gb	gb	NOUN
sc-1149	330	26	)	)	PUNCT
sc-1149	330	27	.	.	PUNCT
sc-1149	331	1	we	we	PRON
sc-1149	331	2	consider	consider	VERB
sc-1149	331	3	the	the	DET
sc-1149	331	4	download	download	NOUN
sc-1149	331	5	time	time	NOUN
sc-1149	331	6	of	of	ADP
sc-1149	331	7	a	a	DET
sc-1149	331	8	swift	swift	ADJ
sc-1149	331	9	object	object	NOUN
sc-1149	331	10	using	use	VERB
sc-1149	331	11	abac	abac	ADJ
sc-1149	331	12	model	model	NOUN
sc-1149	331	13	and	and	CCONJ
sc-1149	331	14	cabac	cabac	PROPN
sc-1149	331	15	model	model	NOUN
sc-1149	331	16	.	.	PUNCT
sc-1149	332	1	we	we	PRON
sc-1149	332	2	observe	observe	VERB
sc-1149	332	3	that	that	SCONJ
sc-1149	332	4	the	the	DET
sc-1149	332	5	performance	performance	NOUN
sc-1149	332	6	of	of	ADP
sc-1149	332	7	enforcing	enforce	VERB
sc-1149	332	8	our	our	PRON
sc-1149	332	9	approach	approach	NOUN
sc-1149	332	10	depends	depend	VERB
sc-1149	332	11	on	on	ADP
sc-1149	332	12	many	many	ADJ
sc-1149	332	13	factors	factor	NOUN
sc-1149	332	14	,	,	PUNCT
sc-1149	332	15	such	such	ADJ
sc-1149	332	16	as	as	ADP
sc-1149	332	17	numbers	number	NOUN
sc-1149	332	18	of	of	ADP
sc-1149	332	19	rules	rule	NOUN
sc-1149	332	20	,	,	PUNCT
sc-1149	332	21	number	number	NOUN
sc-1149	332	22	of	of	ADP
sc-1149	332	23	attributes	attribute	NOUN
sc-1149	332	24	and	and	CCONJ
sc-1149	332	25	number	number	NOUN
sc-1149	332	26	of	of	ADP
sc-1149	332	27	concurrent	concurrent	ADJ
sc-1149	332	28	collaborative	collaborative	ADJ
sc-1149	332	29	sessions	session	NOUN
sc-1149	332	30	.	.	PUNCT
sc-1149	333	1	in	in	ADP
sc-1149	333	2	our	our	PRON
sc-1149	333	3	analysis	analysis	NOUN
sc-1149	333	4	,	,	PUNCT
sc-1149	333	5	we	we	PRON
sc-1149	333	6	have	have	AUX
sc-1149	333	7	used	use	VERB
sc-1149	333	8	a	a	DET
sc-1149	333	9	synthetic	synthetic	ADJ
sc-1149	333	10	dataset	dataset	NOUN
sc-1149	333	11	that	that	PRON
sc-1149	333	12	contains	contain	VERB
sc-1149	333	13	up	up	ADP
sc-1149	333	14	to	to	ADP
sc-1149	333	15	2000	2000	NUM
sc-1149	333	16	rules	rule	NOUN
sc-1149	333	17	,	,	PUNCT
sc-1149	333	18	2500	2500	NUM
sc-1149	333	19	attributes	attribute	NOUN
sc-1149	333	20	and	and	CCONJ
sc-1149	333	21	25	25	NUM
sc-1149	333	22	concurrent	concurrent	ADJ
sc-1149	333	23	collaborative	collaborative	ADJ
sc-1149	333	24	sessions	session	NOUN
sc-1149	333	25	.	.	PUNCT
sc-1149	334	1	figure	figure	NOUN
sc-1149	334	2	10(a	10(a	NUM
sc-1149	334	3	)	)	PUNCT
sc-1149	334	4	shows	show	VERB
sc-1149	334	5	that	that	SCONJ
sc-1149	334	6	the	the	DET
sc-1149	334	7	average	average	ADJ
sc-1149	334	8	time	time	NOUN
sc-1149	334	9	to	to	PART
sc-1149	334	10	authorize	authorize	VERB
sc-1149	334	11	the	the	DET
sc-1149	334	12	access	access	NOUN
sc-1149	334	13	to	to	ADP
sc-1149	334	14	a	a	DET
sc-1149	334	15	swift	swift	ADJ
sc-1149	334	16	object	object	NOUN
sc-1149	334	17	with	with	ADP
sc-1149	334	18	abac	abac	ADJ
sc-1149	334	19	model	model	NOUN
sc-1149	334	20	increases	increase	VERB
sc-1149	334	21	with	with	ADP
sc-1149	334	22	13.4	13.4	NUM
sc-1149	334	23	%	%	NOUN
sc-1149	334	24	and	and	CCONJ
sc-1149	334	25	22.7	22.7	NUM
sc-1149	334	26	%	%	NOUN
sc-1149	334	27	for	for	ADP
sc-1149	334	28	policies	policy	NOUN
sc-1149	334	29	of	of	ADP
sc-1149	334	30	400	400	NUM
sc-1149	334	31	and	and	CCONJ
sc-1149	334	32	2500	2500	NUM
sc-1149	334	33	rules	rule	NOUN
sc-1149	334	34	respectively	respectively	ADV
sc-1149	334	35	using	use	VERB
sc-1149	334	36	the	the	DET
sc-1149	334	37	c	c	NOUN
sc-1149	334	38	-	-	PUNCT
sc-1149	334	39	abac	abac	ADJ
sc-1149	334	40	model	model	NOUN
sc-1149	334	41	.	.	PUNCT
sc-1149	335	1	the	the	DET
sc-1149	335	2	waiting	waiting	NOUN
sc-1149	335	3	time	time	NOUN
sc-1149	335	4	for	for	ADP
sc-1149	335	5	getting	get	VERB
sc-1149	335	6	a	a	DET
sc-1149	335	7	policy	policy	NOUN
sc-1149	335	8	decision	decision	NOUN
sc-1149	335	9	becomes	become	VERB
sc-1149	335	10	larger	large	ADJ
sc-1149	335	11	when	when	SCONJ
sc-1149	335	12	there	there	PRON
sc-1149	335	13	are	be	VERB
sc-1149	335	14	too	too	ADV
sc-1149	335	15	many	many	ADJ
sc-1149	335	16	authorizations	authorization	NOUN
sc-1149	335	17	to	to	PART
sc-1149	335	18	be	be	AUX
sc-1149	335	19	collected	collect	VERB
sc-1149	335	20	.	.	PUNCT
sc-1149	336	1	we	we	PRON
sc-1149	336	2	acknowledge	acknowledge	VERB
sc-1149	336	3	that	that	SCONJ
sc-1149	336	4	our	our	PRON
sc-1149	336	5	implementation	implementation	NOUN
sc-1149	336	6	works	work	VERB
sc-1149	336	7	well	well	ADV
sc-1149	336	8	for	for	ADP
sc-1149	336	9	a	a	DET
sc-1149	336	10	large	large	ADJ
sc-1149	336	11	number	number	NOUN
sc-1149	336	12	of	of	ADP
sc-1149	336	13	authorizations	authorization	NOUN
sc-1149	336	14	.	.	PUNCT
sc-1149	337	1	furthermore	furthermore	ADV
sc-1149	337	2	,	,	PUNCT
sc-1149	337	3	we	we	PRON
sc-1149	337	4	compute	compute	VERB
sc-1149	337	5	the	the	DET
sc-1149	337	6	running	running	NOUN
sc-1149	337	7	time	time	NOUN
sc-1149	337	8	for	for	ADP
sc-1149	337	9	access	access	NOUN
sc-1149	337	10	/	/	SYM
sc-1149	337	11	deny	deny	NOUN
sc-1149	337	12	decisions	decision	NOUN
sc-1149	337	13	to	to	ADP
sc-1149	337	14	a	a	DET
sc-1149	337	15	swift	swift	ADJ
sc-1149	337	16	object	object	NOUN
sc-1149	337	17	using	use	VERB
sc-1149	337	18	abac	abac	ADJ
sc-1149	337	19	and	and	CCONJ
sc-1149	337	20	c	c	NOUN
sc-1149	337	21	-	-	PUNCT
sc-1149	337	22	abac	abac	ADJ
sc-1149	337	23	model	model	NOUN
sc-1149	337	24	for	for	ADP
sc-1149	337	25	400	400	NUM
sc-1149	337	26	rules	rule	NOUN
sc-1149	337	27	and	and	CCONJ
sc-1149	337	28	for	for	ADP
sc-1149	337	29	500	500	NUM
sc-1149	337	30	to	to	PART
sc-1149	337	31	2500	2500	NUM
sc-1149	337	32	attributes	attribute	NOUN
sc-1149	337	33	.	.	PUNCT
sc-1149	338	1	figure	figure	NOUN
sc-1149	338	2	10(b	10(b	NUM
sc-1149	338	3	)	)	PUNCT
sc-1149	338	4	shows	show	VERB
sc-1149	338	5	that	that	SCONJ
sc-1149	338	6	the	the	DET
sc-1149	338	7	average	average	ADJ
sc-1149	338	8	time	time	NOUN
sc-1149	338	9	for	for	ADP
sc-1149	338	10	download	download	NOUN
sc-1149	338	11	of	of	ADP
sc-1149	338	12	a	a	DET
sc-1149	338	13	swift	swift	ADJ
sc-1149	338	14	resource	resource	NOUN
sc-1149	338	15	with	with	ADP
sc-1149	338	16	abac	abac	ADJ
sc-1149	338	17	model	model	NOUN
sc-1149	338	18	increases	increase	VERB
sc-1149	338	19	with	with	ADP
sc-1149	338	20	7.6	7.6	NUM
sc-1149	338	21	%	%	NOUN
sc-1149	338	22	and	and	CCONJ
sc-1149	338	23	19.6	19.6	NUM
sc-1149	338	24	%	%	NOUN
sc-1149	338	25	for	for	ADP
sc-1149	338	26	500	500	NUM
sc-1149	338	27	and	and	CCONJ
sc-1149	338	28	2500	2500	NUM
sc-1149	338	29	user	user	NOUN
sc-1149	338	30	attributes	attribute	VERB
sc-1149	338	31	assignments	assignment	NOUN
sc-1149	338	32	using	use	VERB
sc-1149	338	33	c	c	NOUN
sc-1149	338	34	-	-	PUNCT
sc-1149	338	35	abac	abac	ADJ
sc-1149	338	36	module	module	NOUN
sc-1149	338	37	.	.	PUNCT
sc-1149	339	1	we	we	PRON
sc-1149	339	2	acknowledge	acknowledge	VERB
sc-1149	339	3	that	that	SCONJ
sc-1149	339	4	our	our	PRON
sc-1149	339	5	implementation	implementation	NOUN
sc-1149	339	6	works	work	VERB
sc-1149	339	7	well	well	ADV
sc-1149	339	8	for	for	ADP
sc-1149	339	9	a	a	DET
sc-1149	339	10	large	large	ADJ
sc-1149	339	11	number	number	NOUN
sc-1149	339	12	of	of	ADP
sc-1149	339	13	authorizations	authorization	NOUN
sc-1149	339	14	.	.	PUNCT
sc-1149	340	1	finally	finally	ADV
sc-1149	340	2	,	,	PUNCT
sc-1149	340	3	we	we	PRON
sc-1149	340	4	compute	compute	VERB
sc-1149	340	5	the	the	DET
sc-1149	340	6	running	running	NOUN
sc-1149	340	7	time	time	NOUN
sc-1149	340	8	for	for	ADP
sc-1149	340	9	access	access	NOUN
sc-1149	340	10	/	/	SYM
sc-1149	340	11	deny	deny	NOUN
sc-1149	340	12	decisions	decision	NOUN
sc-1149	340	13	to	to	ADP
sc-1149	340	14	a	a	DET
sc-1149	340	15	swift	swift	ADJ
sc-1149	340	16	object	object	NOUN
sc-1149	340	17	using	use	VERB
sc-1149	340	18	abac	abac	ADJ
sc-1149	340	19	and	and	CCONJ
sc-1149	340	20	c	c	NOUN
sc-1149	340	21	-	-	PUNCT
sc-1149	340	22	abac	abac	ADJ
sc-1149	340	23	model	model	NOUN
sc-1149	340	24	for	for	ADP
sc-1149	340	25	400	400	NUM
sc-1149	340	26	rules	rule	NOUN
sc-1149	340	27	,	,	PUNCT
sc-1149	340	28	500	500	NUM
sc-1149	340	29	attributes	attribute	NOUN
sc-1149	340	30	and	and	CCONJ
sc-1149	340	31	number	number	NOUN
sc-1149	340	32	of	of	ADP
sc-1149	340	33	concurrent	concurrent	ADJ
sc-1149	340	34	collaborative	collaborative	ADJ
sc-1149	340	35	sessions	session	NOUN
sc-1149	340	36	with	with	ADP
sc-1149	340	37	10	10	NUM
sc-1149	340	38	to	to	PART
sc-1149	340	39	50	50	NUM
sc-1149	340	40	active	active	ADJ
sc-1149	340	41	ones	one	NOUN
sc-1149	340	42	.	.	PUNCT
sc-1149	341	1	figure	figure	VERB
sc-1149	341	2	10(c	10(c	NUM
sc-1149	341	3	)	)	PUNCT
sc-1149	341	4	shows	show	VERB
sc-1149	341	5	that	that	SCONJ
sc-1149	341	6	the	the	DET
sc-1149	341	7	average	average	ADJ
sc-1149	341	8	time	time	NOUN
sc-1149	341	9	for	for	ADP
sc-1149	341	10	access	access	NOUN
sc-1149	341	11	/	/	SYM
sc-1149	341	12	deny	deny	NOUN
sc-1149	341	13	decisions	decision	NOUN
sc-1149	341	14	to	to	PART
sc-1149	341	15	swift	swift	VERB
sc-1149	341	16	resources	resource	NOUN
sc-1149	341	17	using	use	VERB
sc-1149	341	18	abac	abac	ADJ
sc-1149	341	19	model	model	NOUN
sc-1149	341	20	increases	increase	NOUN
sc-1149	341	21	with	with	ADP
sc-1149	341	22	20.1	20.1	NUM
sc-1149	341	23	%	%	NOUN
sc-1149	341	24	and	and	CCONJ
sc-1149	341	25	34.7	34.7	NUM
sc-1149	341	26	%	%	NOUN
sc-1149	341	27	for	for	ADP
sc-1149	341	28	10	10	NUM
sc-1149	341	29	and	and	CCONJ
sc-1149	341	30	50	50	NUM
sc-1149	341	31	concurrent	concurrent	ADJ
sc-1149	341	32	collaborative	collaborative	ADJ
sc-1149	341	33	sessions	session	NOUN
sc-1149	341	34	respectively	respectively	ADV
sc-1149	341	35	using	use	VERB
sc-1149	341	36	the	the	DET
sc-1149	341	37	abac	abac	ADJ
sc-1149	341	38	module	module	NOUN
sc-1149	341	39	.	.	PUNCT
sc-1149	342	1	we	we	PRON
sc-1149	342	2	observe	observe	VERB
sc-1149	342	3	that	that	SCONJ
sc-1149	342	4	our	our	PRON
sc-1149	342	5	implementation	implementation	NOUN
sc-1149	342	6	works	work	VERB
sc-1149	342	7	well	well	ADV
sc-1149	342	8	for	for	ADP
sc-1149	342	9	a	a	DET
sc-1149	342	10	medium	medium	ADJ
sc-1149	342	11	number	number	NOUN
sc-1149	342	12	of	of	ADP
sc-1149	342	13	active	active	ADJ
sc-1149	342	14	concurrent	concurrent	ADJ
sc-1149	342	15	collaborative	collaborative	ADJ
sc-1149	342	16	sessions	session	NOUN
sc-1149	342	17	.	.	PUNCT
sc-1149	343	1	the	the	DET
sc-1149	343	2	overhead	overhead	NOUN
sc-1149	343	3	reaches	reach	VERB
sc-1149	343	4	34.7	34.7	NUM
sc-1149	343	5	%	%	NOUN
sc-1149	343	6	in	in	ADP
sc-1149	343	7	an	an	DET
sc-1149	343	8	unusual	unusual	ADJ
sc-1149	343	9	situations	situation	NOUN
sc-1149	343	10	where	where	SCONJ
sc-1149	343	11	there	there	PRON
sc-1149	343	12	are	be	VERB
sc-1149	343	13	50	50	NUM
sc-1149	343	14	concurrent	concurrent	ADJ
sc-1149	343	15	parallel	parallel	ADJ
sc-1149	343	16	collaborative	collaborative	ADJ
sc-1149	343	17	sessions	session	NOUN
sc-1149	343	18	.	.	PUNCT
sc-1149	344	1	6	6	X
sc-1149	344	2	.	.	X
sc-1149	344	3	conclusion	conclusion	NOUN
sc-1149	344	4	in	in	ADP
sc-1149	344	5	this	this	DET
sc-1149	344	6	paper	paper	NOUN
sc-1149	344	7	,	,	PUNCT
sc-1149	344	8	we	we	PRON
sc-1149	344	9	present	present	VERB
sc-1149	344	10	a	a	DET
sc-1149	344	11	novel	novel	ADJ
sc-1149	344	12	abac	abac	ADJ
sc-1149	344	13	based	base	VERB
sc-1149	344	14	access	access	NOUN
sc-1149	344	15	control	control	PROPN
sc-1149	344	16	model	model	NOUN
sc-1149	344	17	called	call	VERB
sc-1149	344	18	(	(	PUNCT
sc-1149	344	19	c	c	NOUN
sc-1149	344	20	-	-	PUNCT
sc-1149	344	21	abac	abac	ADJ
sc-1149	344	22	)	)	PUNCT
sc-1149	344	23	.	.	PUNCT
sc-1149	345	1	c	c	X
sc-1149	345	2	-	-	PUNCT
sc-1149	345	3	abac	abac	ADJ
sc-1149	345	4	enables	enable	VERB
sc-1149	345	5	to	to	PART
sc-1149	345	6	ensure	ensure	VERB
sc-1149	345	7	access	access	NOUN
sc-1149	345	8	control	control	NOUN
sc-1149	345	9	in	in	ADP
sc-1149	345	10	collaboration	collaboration	NOUN
sc-1149	345	11	between	between	ADP
sc-1149	345	12	tenants	tenant	NOUN
sc-1149	345	13	in	in	ADP
sc-1149	345	14	the	the	DET
sc-1149	345	15	cloud	cloud	NOUN
sc-1149	345	16	.	.	PUNCT
sc-1149	346	1	c	c	X
sc-1149	346	2	-	-	PUNCT
sc-1149	346	3	abac	abac	ADJ
sc-1149	346	4	allows	allow	VERB
sc-1149	346	5	the	the	DET
sc-1149	346	6	collaborating	collaborate	VERB
sc-1149	346	7	tenants	tenant	NOUN
sc-1149	346	8	to	to	PART
sc-1149	346	9	specify	specify	VERB
sc-1149	346	10	a	a	DET
sc-1149	346	11	global	global	ADJ
sc-1149	346	12	policy	policy	NOUN
sc-1149	346	13	in	in	ADP
sc-1149	346	14	a	a	DET
sc-1149	346	15	specific	specific	ADJ
sc-1149	346	16	central	central	ADJ
sc-1149	346	17	point	point	NOUN
sc-1149	346	18	.	.	PUNCT
sc-1149	347	1	it	it	PRON
sc-1149	347	2	supports	support	VERB
sc-1149	347	3	multiple	multiple	ADJ
sc-1149	347	4	concepts	concept	NOUN
sc-1149	347	5	such	such	ADJ
sc-1149	347	6	as	as	ADP
sc-1149	347	7	:	:	PUNCT
sc-1149	347	8	task	task	NOUN
sc-1149	347	9	and	and	CCONJ
sc-1149	347	10	workflow	workflow	NOUN
sc-1149	347	11	.	.	PUNCT
sc-1149	348	1	the	the	DET
sc-1149	348	2	suggested	suggest	VERB
sc-1149	348	3	model	model	NOUN
sc-1149	348	4	ensures	ensure	VERB
sc-1149	348	5	the	the	DET
sc-1149	348	6	autonomy	autonomy	NOUN
sc-1149	348	7	of	of	ADP
sc-1149	348	8	tenant	tenant	NOUN
sc-1149	348	9	and	and	CCONJ
sc-1149	348	10	preserves	preserve	VERB
sc-1149	348	11	the	the	DET
sc-1149	348	12	confidentiality	confidentiality	NOUN
sc-1149	348	13	of	of	ADP
sc-1149	348	14	each	each	DET
sc-1149	348	15	tenant	tenant	NOUN
sc-1149	348	16	object	object	VERB
sc-1149	348	17	.	.	PUNCT
sc-1149	349	1	finally	finally	ADV
sc-1149	349	2	,	,	PUNCT
sc-1149	349	3	an	an	DET
sc-1149	349	4	architecture	architecture	NOUN
sc-1149	349	5	that	that	PRON
sc-1149	349	6	integrates	integrate	VERB
sc-1149	349	7	c	c	NOUN
sc-1149	349	8	-	-	PUNCT
sc-1149	349	9	abac	abac	ADJ
sc-1149	349	10	in	in	ADP
sc-1149	349	11	the	the	DET
sc-1149	349	12	storage	storage	NOUN
sc-1149	349	13	level	level	NOUN
sc-1149	349	14	of	of	ADP
sc-1149	349	15	the	the	DET
sc-1149	349	16	cloud	cloud	NOUN
sc-1149	349	17	platform	platform	NOUN
sc-1149	349	18	openstack	openstack	PROPN
sc-1149	349	19	has	have	AUX
sc-1149	349	20	been	be	AUX
sc-1149	349	21	described	describe	VERB
sc-1149	349	22	.	.	PUNCT
sc-1149	350	1	the	the	DET
sc-1149	350	2	implementation	implementation	NOUN
sc-1149	350	3	results	result	NOUN
sc-1149	350	4	have	have	AUX
sc-1149	350	5	shown	show	VERB
sc-1149	350	6	that	that	SCONJ
sc-1149	350	7	the	the	DET
sc-1149	350	8	suggested	suggest	VERB
sc-1149	350	9	approach	approach	NOUN
sc-1149	350	10	has	have	VERB
sc-1149	350	11	a	a	DET
sc-1149	350	12	very	very	ADV
sc-1149	350	13	limited	limited	ADJ
sc-1149	350	14	overhead	overhead	NOUN
sc-1149	350	15	.	.	PUNCT
sc-1149	351	1	11	11	NUM
sc-1149	351	2	eai	eai	PROPN
sc-1149	351	3	endorsed	endorse	VERB
sc-1149	351	4	transactions	transaction	NOUN
sc-1149	351	5	on	on	ADP
sc-1149	351	6	smart	smart	ADJ
sc-1149	351	7	cities	city	NOUN
sc-1149	351	8	02	02	NUM
sc-1149	351	9	2018	2018	NUM
sc-1149	351	10	06	06	NUM
sc-1149	351	11	2018	2018	NUM
sc-1149	351	12	|	|	ADV
sc-1149	351	13	volume	volume	NOUN
sc-1149	351	14	2	2	NUM
sc-1149	351	15	|	|	ADV
sc-1149	351	16	issue	issue	VERB
sc-1149	351	17	8	8	NUM
sc-1149	351	18	|	|	NOUN
sc-1149	351	19	e3	e3	VERB
sc-1149	351	20	m.	m.	NOUN
sc-1149	351	21	madani	madani	PROPN
sc-1149	351	22	,	,	PUNCT
sc-1149	351	23	m.	m.	NOUN
sc-1149	351	24	erradi	erradi	PROPN
sc-1149	351	25	,	,	PUNCT
sc-1149	351	26	y.	y.	PROPN
sc-1149	351	27	benkaouz	benkaouz	PROPN
sc-1149	351	28	figure	figure	NOUN
sc-1149	351	29	10	10	NUM
sc-1149	351	30	.	.	PUNCT
sc-1149	352	1	running	run	VERB
sc-1149	352	2	time	time	NOUN
sc-1149	352	3	overhead	overhead	ADV
sc-1149	352	4	for	for	ADP
sc-1149	352	5	access	access	NOUN
sc-1149	352	6	/	/	SYM
sc-1149	352	7	deny	deny	NOUN
sc-1149	352	8	decisions	decision	NOUN
sc-1149	352	9	references	reference	NOUN
sc-1149	352	10	[	[	X
sc-1149	352	11	1	1	NUM
sc-1149	352	12	]	]	PUNCT
sc-1149	352	13	p.	p.	PROPN
sc-1149	352	14	mell	mell	PROPN
sc-1149	352	15	and	and	CCONJ
sc-1149	352	16	t.	t.	PROPN
sc-1149	352	17	grance	grance	NOUN
sc-1149	352	18	.	.	PUNCT
sc-1149	353	1	the	the	DET
sc-1149	353	2	nist	nist	NOUN
sc-1149	353	3	definition	definition	NOUN
sc-1149	353	4	of	of	ADP
sc-1149	353	5	cloud	cloud	PROPN
sc-1149	353	6	computing	computing	NOUN
sc-1149	353	7	.	.	PUNCT
sc-1149	354	1	nist	nist	PROPN
sc-1149	354	2	special	special	ADJ
sc-1149	354	3	publication	publication	NOUN
sc-1149	354	4	800145	800145	NUM
sc-1149	354	5	(	(	PUNCT
sc-1149	354	6	draft	draft	NOUN
sc-1149	354	7	)	)	PUNCT
sc-1149	354	8	.	.	PUNCT
sc-1149	355	1	retrieved	retrieve	VERB
sc-1149	355	2	september	september	PROPN
sc-1149	355	3	10	10	NUM
sc-1149	355	4	,	,	PUNCT
sc-1149	355	5	2011	2011	NUM
sc-1149	355	6	,	,	PUNCT
sc-1149	355	7	from	from	ADP
sc-1149	355	8	http://csrc.nist.gov/publications/drafts/800-145/draftsp-800-145-cloud-definition.pdf	http://csrc.nist.gov/publications/drafts/800-145/draftsp-800-145-cloud-definition.pdf	NOUN
sc-1149	355	9	.	.	PUNCT
sc-1149	356	1	[	[	X
sc-1149	356	2	2	2	X
sc-1149	356	3	]	]	PUNCT
sc-1149	356	4	j.	j.	PROPN
sc-1149	356	5	m.	m.	PROPN
sc-1149	356	6	a.	a.	PROPN
sc-1149	356	7	calero	calero	PROPN
sc-1149	356	8	,	,	PUNCT
sc-1149	356	9	n.	n.	PROPN
sc-1149	356	10	edwards	edwards	PROPN
sc-1149	356	11	,	,	PUNCT
sc-1149	356	12	j.	j.	PROPN
sc-1149	356	13	kirschnick	kirschnick	PROPN
sc-1149	356	14	,	,	PUNCT
sc-1149	356	15	l.	l.	PROPN
sc-1149	356	16	wilcock	wilcock	PROPN
sc-1149	356	17	,	,	PUNCT
sc-1149	356	18	and	and	CCONJ
sc-1149	356	19	m.	m.	NOUN
sc-1149	356	20	wray	wray	PROPN
sc-1149	356	21	.	.	PUNCT
sc-1149	357	1	toward	toward	ADP
sc-1149	357	2	a	a	DET
sc-1149	357	3	multi	multi	ADJ
sc-1149	357	4	-	-	ADJ
sc-1149	357	5	tenancy	tenancy	ADJ
sc-1149	357	6	authorization	authorization	NOUN
sc-1149	357	7	system	system	NOUN
sc-1149	357	8	for	for	ADP
sc-1149	357	9	cloud	cloud	NOUN
sc-1149	357	10	services	service	NOUN
sc-1149	357	11	.	.	PUNCT
sc-1149	358	1	ieee	ieee	NOUN
sc-1149	358	2	security	security	NOUN
sc-1149	358	3	and	and	CCONJ
sc-1149	358	4	privacy	privacy	NOUN
sc-1149	358	5	,	,	PUNCT
sc-1149	358	6	vol	vol	NOUN
sc-1149	358	7	.	.	PROPN
sc-1149	358	8	8	8	NUM
sc-1149	358	9	,	,	PUNCT
sc-1149	358	10	no	no	INTJ
sc-1149	358	11	.	.	NOUN
sc-1149	358	12	6	6	NUM
sc-1149	358	13	,	,	PUNCT
sc-1149	358	14	pp	pp	ADJ
sc-1149	358	15	.	.	PUNCT
sc-1149	359	1	48	48	NUM
sc-1149	359	2	-	-	SYM
sc-1149	359	3	55	55	NUM
sc-1149	359	4	.	.	PUNCT
sc-1149	360	1	2010	2010	NUM
sc-1149	360	2	.	.	PUNCT
sc-1149	361	1	[	[	X
sc-1149	361	2	3	3	X
sc-1149	361	3	]	]	X
sc-1149	361	4	b.	b.	PROPN
sc-1149	361	5	tang	tang	PROPN
sc-1149	361	6	,	,	PUNCT
sc-1149	361	7	and	and	CCONJ
sc-1149	361	8	r.	r.	PROPN
sc-1149	361	9	sandhu	sandhu	PROPN
sc-1149	361	10	.	.	PUNCT
sc-1149	362	1	a	a	DET
sc-1149	362	2	multi	multi	ADJ
sc-1149	362	3	-	-	ADJ
sc-1149	362	4	tenant	tenant	ADJ
sc-1149	362	5	rbac	rbac	PROPN
sc-1149	362	6	model	model	NOUN
sc-1149	362	7	for	for	ADP
sc-1149	362	8	collaborative	collaborative	ADJ
sc-1149	362	9	cloud	cloud	PROPN
sc-1149	362	10	services	service	NOUN
sc-1149	362	11	.	.	PUNCT
sc-1149	363	1	in	in	ADP
sc-1149	363	2	pst	pst	ADJ
sc-1149	363	3	,	,	PUNCT
sc-1149	363	4	pp	pp	ADJ
sc-1149	363	5	.	.	PUNCT
sc-1149	363	6	229	229	NUM
sc-1149	363	7	-	-	SYM
sc-1149	363	8	238	238	NUM
sc-1149	363	9	,	,	PUNCT
sc-1149	363	10	2013	2013	NUM
sc-1149	363	11	.	.	PUNCT
sc-1149	364	1	[	[	X
sc-1149	364	2	4	4	X
sc-1149	364	3	]	]	X
sc-1149	364	4	h.	h.	NOUN
sc-1149	364	5	takabi	takabi	PROPN
sc-1149	364	6	,	,	PUNCT
sc-1149	364	7	j.	j.	PROPN
sc-1149	364	8	b.	b.	PROPN
sc-1149	364	9	d.	d.	PROPN
sc-1149	364	10	joshi	joshi	PROPN
sc-1149	364	11	,	,	PUNCT
sc-1149	364	12	and	and	CCONJ
sc-1149	364	13	g.	g.	PROPN
sc-1149	364	14	j.	j.	PROPN
sc-1149	364	15	ahn	ahn	PROPN
sc-1149	364	16	,	,	PUNCT
sc-1149	364	17	.securecloud	.securecloud	ADP
sc-1149	364	18	:	:	PUNCT
sc-1149	364	19	towards	towards	ADP
sc-1149	364	20	a	a	DET
sc-1149	364	21	comprehensive	comprehensive	ADJ
sc-1149	364	22	security	security	NOUN
sc-1149	364	23	framework	framework	NOUN
sc-1149	364	24	for	for	ADP
sc-1149	364	25	cloud	cloud	NOUN
sc-1149	364	26	computing	computing	NOUN
sc-1149	364	27	environments	environment	NOUN
sc-1149	364	28	.	.	PUNCT
sc-1149	365	1	in	in	ADP
sc-1149	365	2	proc	proc	NOUN
sc-1149	365	3	.	.	PUNCT
sc-1149	366	1	of	of	ADP
sc-1149	366	2	the	the	DET
sc-1149	366	3	1st	1st	ADJ
sc-1149	366	4	ieee	ieee	NOUN
sc-1149	366	5	international	international	ADJ
sc-1149	366	6	workshop	workshop	NOUN
sc-1149	366	7	emerging	emerge	VERB
sc-1149	366	8	applications	application	NOUN
sc-1149	366	9	for	for	ADP
sc-1149	366	10	cloud	cloud	NOUN
sc-1149	366	11	computing	computing	NOUN
sc-1149	366	12	,	,	PUNCT
sc-1149	366	13	pp	pp	ADJ
sc-1149	366	14	.	.	PUNCT
sc-1149	367	1	393	393	NUM
sc-1149	367	2	-	-	SYM
sc-1149	367	3	398	398	NUM
sc-1149	367	4	,	,	PUNCT
sc-1149	367	5	seoul	seoul	PROPN
sc-1149	367	6	,	,	PUNCT
sc-1149	367	7	south	south	PROPN
sc-1149	367	8	korea	korea	PROPN
sc-1149	367	9	,	,	PUNCT
sc-1149	367	10	2010	2010	NUM
sc-1149	367	11	.	.	PUNCT
sc-1149	368	1	[	[	X
sc-1149	368	2	5	5	NUM
sc-1149	368	3	]	]	PUNCT
sc-1149	368	4	a.	a.	NOUN
sc-1149	368	5	tanvir	tanvir	PROPN
sc-1149	368	6	,	,	PUNCT
sc-1149	368	7	a.	a.	PROPN
sc-1149	368	8	r.	r.	PROPN
sc-1149	368	9	tripathi	tripathi	PROPN
sc-1149	368	10	.	.	PUNCT
sc-1149	368	11	specification	specification	NOUN
sc-1149	368	12	and	and	CCONJ
sc-1149	368	13	verification	verification	NOUN
sc-1149	368	14	of	of	ADP
sc-1149	368	15	security	security	NOUN
sc-1149	368	16	requirements	requirement	NOUN
sc-1149	368	17	in	in	ADP
sc-1149	368	18	a	a	DET
sc-1149	368	19	programming	programming	NOUN
sc-1149	368	20	model	model	NOUN
sc-1149	368	21	for	for	ADP
sc-1149	368	22	decentralized	decentralize	VERB
sc-1149	368	23	cscw	cscw	NOUN
sc-1149	368	24	systems	system	NOUN
sc-1149	368	25	.	.	PUNCT
sc-1149	369	1	acm	acm	PROPN
sc-1149	369	2	trans	trans	PROPN
sc-1149	369	3	.	.	PROPN
sc-1149	369	4	inf	inf	PROPN
sc-1149	369	5	.	.	PUNCT
sc-1149	369	6	syst	syst	PROPN
sc-1149	369	7	.	.	PUNCT
sc-1149	369	8	secur	secur	PROPN
sc-1149	369	9	.	.	PUNCT
sc-1149	370	1	10(2	10(2	NUM
sc-1149	370	2	)	)	PUNCT
sc-1149	370	3	(	(	PUNCT
sc-1149	370	4	2007	2007	NUM
sc-1149	370	5	)	)	PUNCT
sc-1149	370	6	.	.	PUNCT
sc-1149	371	1	[	[	X
sc-1149	371	2	6	6	NUM
sc-1149	371	3	]	]	PUNCT
sc-1149	371	4	openstack	openstack	PROPN
sc-1149	371	5	cloud	cloud	PROPN
sc-1149	371	6	platform	platform	NOUN
sc-1149	371	7	.	.	PUNCT
sc-1149	372	1	http://www.openstack.org/.	http://www.openstack.org/.	PROPN
sc-1149	372	2	accessed	access	VERB
sc-1149	372	3	:	:	PUNCT
sc-1149	372	4	20161005	20161005	NUM
sc-1149	372	5	.	.	PUNCT
sc-1149	373	1	[	[	X
sc-1149	373	2	7	7	X
sc-1149	373	3	]	]	X
sc-1149	373	4	openstack	openstack	ADJ
sc-1149	373	5	swift	swift	ADJ
sc-1149	373	6	architecture	architecture	NOUN
sc-1149	373	7	.	.	PUNCT
sc-1149	374	1	https://swiftstack.com/openstack-swift/architecture/.	https://swiftstack.com/openstack-swift/architecture/.	PROPN
sc-1149	374	2	accessed	access	VERB
sc-1149	374	3	:	:	PUNCT
sc-1149	374	4	20161005	20161005	NUM
sc-1149	374	5	.	.	PUNCT
sc-1149	375	1	[	[	X
sc-1149	375	2	8	8	NUM
sc-1149	375	3	]	]	X
sc-1149	375	4	y.	y.	PROPN
sc-1149	375	5	zhang	zhang	PROPN
sc-1149	375	6	,	,	PUNCT
sc-1149	375	7	r.	r.	PROPN
sc-1149	375	8	krishnan	krishnan	PROPN
sc-1149	375	9	,	,	PUNCT
sc-1149	375	10	r.	r.	PROPN
sc-1149	375	11	sandhu	sandhu	PROPN
sc-1149	375	12	.	.	PUNCT
sc-1149	376	1	secure	secure	ADJ
sc-1149	376	2	information	information	NOUN
sc-1149	376	3	and	and	CCONJ
sc-1149	376	4	resource	resource	NOUN
sc-1149	376	5	sharing	sharing	NOUN
sc-1149	376	6	in	in	ADP
sc-1149	376	7	cloud	cloud	NOUN
sc-1149	376	8	.	.	PUNCT
sc-1149	377	1	codaspy	codaspy	NOUN
sc-1149	377	2	,	,	PUNCT
sc-1149	377	3	pp	pp	ADJ
sc-1149	377	4	.	.	PUNCT
sc-1149	378	1	131	131	NUM
sc-1149	378	2	-	-	SYM
sc-1149	378	3	133	133	NUM
sc-1149	378	4	,	,	PUNCT
sc-1149	378	5	2015	2015	NUM
sc-1149	378	6	.	.	PUNCT
sc-1149	379	1	[	[	X
sc-1149	379	2	9	9	NUM
sc-1149	379	3	]	]	X
sc-1149	379	4	jin	jin	NOUN
sc-1149	379	5	,	,	PUNCT
sc-1149	379	6	x.	x.	PROPN
sc-1149	379	7	,	,	PUNCT
sc-1149	379	8	krishnan	krishnan	PROPN
sc-1149	379	9	,	,	PUNCT
sc-1149	379	10	r.	r.	PROPN
sc-1149	379	11	,	,	PUNCT
sc-1149	379	12	sandhu	sandhu	PROPN
sc-1149	379	13	.	.	PUNCT
sc-1149	380	1	a	a	DET
sc-1149	380	2	unified	unified	ADJ
sc-1149	380	3	attribute	attribute	NOUN
sc-1149	380	4	-	-	PUNCT
sc-1149	380	5	based	base	VERB
sc-1149	380	6	access	access	NOUN
sc-1149	380	7	control	control	NOUN
sc-1149	380	8	model	model	NOUN
sc-1149	380	9	covering	cover	VERB
sc-1149	380	10	dac	dac	NOUN
sc-1149	380	11	,	,	PUNCT
sc-1149	380	12	mac	mac	PROPN
sc-1149	380	13	and	and	CCONJ
sc-1149	380	14	rbac	rbac	PROPN
sc-1149	380	15	.	.	PUNCT
sc-1149	381	1	dbsec	dbsec	PROPN
sc-1149	381	2	12	12	NUM
sc-1149	381	3	,	,	PUNCT
sc-1149	381	4	pp	pp	ADJ
sc-1149	381	5	.	.	PUNCT
sc-1149	382	1	41	41	NUM
sc-1149	382	2	-	-	SYM
sc-1149	382	3	55	55	NUM
sc-1149	382	4	(	(	PUNCT
sc-1149	382	5	2012	2012	NUM
sc-1149	382	6	)	)	PUNCT
sc-1149	382	7	.	.	PUNCT
sc-1149	383	1	[	[	X
sc-1149	383	2	10	10	NUM
sc-1149	383	3	]	]	X
sc-1149	383	4	e.	e.	PROPN
sc-1149	383	5	yuan	yuan	PROPN
sc-1149	383	6	,	,	PUNCT
sc-1149	383	7	and	and	CCONJ
sc-1149	383	8	j.	j.	PROPN
sc-1149	383	9	tong	tong	PROPN
sc-1149	383	10	.	.	PROPN
sc-1149	384	1	attributed	attribute	VERB
sc-1149	384	2	based	base	VERB
sc-1149	384	3	access	access	NOUN
sc-1149	384	4	control	control	NOUN
sc-1149	384	5	(	(	PUNCT
sc-1149	384	6	abac	abac	ADJ
sc-1149	384	7	)	)	PUNCT
sc-1149	384	8	for	for	ADP
sc-1149	384	9	web	web	NOUN
sc-1149	384	10	services	service	NOUN
sc-1149	384	11	.	.	PUNCT
sc-1149	385	1	icws	icws	PROPN
sc-1149	385	2	ieee	ieee	PROPN
sc-1149	385	3	computer	computer	NOUN
sc-1149	385	4	society	society	NOUN
sc-1149	385	5	,	,	PUNCT
sc-1149	385	6	pp	pp	ADV
sc-1149	385	7	.	.	PUNCT
sc-1149	386	1	561	561	NUM
sc-1149	386	2	-	-	SYM
sc-1149	386	3	569	569	NUM
sc-1149	386	4	.	.	PUNCT
sc-1149	387	1	2005	2005	NUM
sc-1149	387	2	.	.	PUNCT
sc-1149	388	1	[	[	X
sc-1149	388	2	11	11	NUM
sc-1149	388	3	]	]	X
sc-1149	388	4	n.	n.	NOUN
sc-1149	388	5	pustchi	pustchi	PROPN
sc-1149	388	6	,	,	PUNCT
sc-1149	388	7	r.	r.	PROPN
sc-1149	388	8	sandhu	sandhu	PROPN
sc-1149	388	9	.	.	PUNCT
sc-1149	389	1	mt	mt	PROPN
sc-1149	389	2	-	-	PUNCT
sc-1149	389	3	abac	abac	ADJ
sc-1149	389	4	:	:	PUNCT
sc-1149	389	5	a	a	DET
sc-1149	389	6	multi	multi	ADJ
sc-1149	389	7	-	-	ADJ
sc-1149	389	8	tenant	tenant	ADJ
sc-1149	389	9	attribute	attribute	NOUN
sc-1149	389	10	-	-	PUNCT
sc-1149	389	11	based	base	VERB
sc-1149	389	12	access	access	NOUN
sc-1149	389	13	control	control	NOUN
sc-1149	389	14	model	model	NOUN
sc-1149	389	15	with	with	ADP
sc-1149	389	16	tenant	tenant	PROPN
sc-1149	389	17	trust	trust	PROPN
sc-1149	389	18	.	.	PUNCT
sc-1149	390	1	nss	ns	NOUN
sc-1149	390	2	.	.	PUNCT
sc-1149	391	1	pp	pp	ADJ
sc-1149	391	2	.	.	PUNCT
sc-1149	392	1	206	206	NUM
sc-1149	392	2	-	-	SYM
sc-1149	392	3	220	220	NUM
sc-1149	392	4	.	.	NOUN
sc-1149	392	5	2015	2015	NUM
sc-1149	392	6	.	.	PUNCT
sc-1149	393	1	[	[	X
sc-1149	393	2	12	12	NUM
sc-1149	393	3	]	]	PUNCT
sc-1149	393	4	r.	r.	PROPN
sc-1149	393	5	thomas	thomas	PROPN
sc-1149	393	6	.	.	PUNCT
sc-1149	394	1	tmac	tmac	PROPN
sc-1149	394	2	:	:	PUNCT
sc-1149	394	3	a	a	DET
sc-1149	394	4	primitive	primitive	ADJ
sc-1149	394	5	for	for	ADP
sc-1149	394	6	applying	apply	VERB
sc-1149	394	7	rbac	rbac	NOUN
sc-1149	394	8	in	in	ADP
sc-1149	394	9	collaborative	collaborative	ADJ
sc-1149	394	10	environment	environment	NOUN
sc-1149	394	11	.	.	PUNCT
sc-1149	395	1	2nd	2nd	PROPN
sc-1149	395	2	acm	acm	PROPN
sc-1149	395	3	,	,	PUNCT
sc-1149	395	4	workshop	workshop	NOUN
sc-1149	395	5	on	on	ADP
sc-1149	395	6	rbac	rbac	PROPN
sc-1149	395	7	,	,	PUNCT
sc-1149	395	8	pp	pp	PROPN
sc-1149	395	9	.	.	PUNCT
sc-1149	396	1	13	13	NUM
sc-1149	396	2	-	-	SYM
sc-1149	396	3	19	19	NUM
sc-1149	396	4	,	,	PUNCT
sc-1149	396	5	fairfax	fairfax	NOUN
sc-1149	396	6	,	,	PUNCT
sc-1149	396	7	virginia	virginia	PROPN
sc-1149	396	8	,	,	PUNCT
sc-1149	396	9	usa	usa	PROPN
sc-1149	396	10	,	,	PUNCT
sc-1149	396	11	november	november	PROPN
sc-1149	396	12	1997	1997	NUM
sc-1149	396	13	.	.	PUNCT
sc-1149	397	1	[	[	X
sc-1149	397	2	13	13	NUM
sc-1149	397	3	]	]	PUNCT
sc-1149	397	4	r.	r.	PROPN
sc-1149	397	5	thomas	thomas	PROPN
sc-1149	397	6	and	and	CCONJ
sc-1149	397	7	r.	r.	PROPN
sc-1149	397	8	sandhu	sandhu	PROPN
sc-1149	397	9	.	.	PUNCT
sc-1149	398	1	task	task	NOUN
sc-1149	398	2	-	-	PUNCT
sc-1149	398	3	based	base	VERB
sc-1149	398	4	authorization	authorization	NOUN
sc-1149	398	5	controls	control	NOUN
sc-1149	398	6	(	(	PUNCT
sc-1149	398	7	tbac	tbac	PROPN
sc-1149	398	8	):	):	PUNCT
sc-1149	398	9	a	a	DET
sc-1149	398	10	family	family	NOUN
sc-1149	398	11	of	of	ADP
sc-1149	398	12	models	model	NOUN
sc-1149	398	13	for	for	ADP
sc-1149	398	14	active	active	ADJ
sc-1149	398	15	and	and	CCONJ
sc-1149	398	16	enterprise	enterprise	NOUN
sc-1149	398	17	-	-	PUNCT
sc-1149	398	18	oriented	orient	VERB
sc-1149	398	19	authorization	authorization	NOUN
sc-1149	398	20	management	management	NOUN
sc-1149	398	21	.	.	PUNCT
sc-1149	399	1	11th	11th	ADJ
sc-1149	399	2	ifip	ifip	PROPN
sc-1149	399	3	workingconference	workingconference	NOUN
sc-1149	399	4	on	on	ADP
sc-1149	399	5	database	database	NOUN
sc-1149	399	6	security	security	NOUN
sc-1149	399	7	,	,	PUNCT
sc-1149	399	8	lake	lake	PROPN
sc-1149	399	9	tahoe	tahoe	PROPN
sc-1149	399	10	,	,	PUNCT
sc-1149	399	11	california	california	PROPN
sc-1149	399	12	,	,	PUNCT
sc-1149	399	13	usa	usa	PROPN
sc-1149	399	14	,	,	PUNCT
sc-1149	399	15	1997	1997	NUM
sc-1149	399	16	.	.	PUNCT
sc-1149	400	1	[	[	X
sc-1149	400	2	14	14	NUM
sc-1149	400	3	]	]	X
sc-1149	400	4	o.h	o.h	PROPN
sc-1149	400	5	.	.	PROPN
sc-1149	400	6	sejong	sejong	PROPN
sc-1149	400	7	,	,	PUNCT
sc-1149	400	8	s.park	s.park	NOUN
sc-1149	400	9	.	.	PUNCT
sc-1149	401	1	task	task	NOUN
sc-1149	401	2	-	-	PUNCT
sc-1149	401	3	role	role	NOUN
sc-1149	401	4	-	-	PUNCT
sc-1149	401	5	based	base	VERB
sc-1149	401	6	access	access	NOUN
sc-1149	401	7	control	control	NOUN
sc-1149	401	8	model	model	NOUN
sc-1149	401	9	.	.	PUNCT
sc-1149	402	1	in	in	ADP
sc-1149	402	2	:	:	PUNCT
sc-1149	402	3	information	information	NOUN
sc-1149	402	4	systems	system	NOUN
sc-1149	402	5	,	,	PUNCT
sc-1149	402	6	28(6	28(6	NUM
sc-1149	402	7	):	):	PUNCT
sc-1149	402	8	pp	pp	ADJ
sc-1149	402	9	.	.	PUNCT
sc-1149	403	1	533	533	NUM
sc-1149	403	2	-	-	SYM
sc-1149	403	3	562	562	NUM
sc-1149	403	4	,	,	PUNCT
sc-1149	403	5	2003	2003	NUM
sc-1149	403	6	.	.	PUNCT
sc-1149	404	1	[	[	X
sc-1149	404	2	15	15	NUM
sc-1149	404	3	]	]	PUNCT
sc-1149	404	4	x.	x.	NOUN
sc-1149	404	5	jin	jin	PROPN
sc-1149	404	6	,	,	PUNCT
sc-1149	404	7	r.	r.	PROPN
sc-1149	404	8	krishnan	krishnan	PROPN
sc-1149	404	9	,	,	PUNCT
sc-1149	404	10	r.	r.	PROPN
sc-1149	404	11	sandhu	sandhu	PROPN
sc-1149	404	12	.	.	PUNCT
sc-1149	405	1	role	role	NOUN
sc-1149	405	2	and	and	CCONJ
sc-1149	405	3	attribute	attribute	NOUN
sc-1149	405	4	based	base	VERB
sc-1149	405	5	collaborative	collaborative	PROPN
sc-1149	405	6	administration	administration	NOUN
sc-1149	405	7	of	of	ADP
sc-1149	405	8	intra	intra	ADJ
sc-1149	405	9	-	-	ADJ
sc-1149	405	10	tenant	tenant	ADJ
sc-1149	405	11	cloud	cloud	NOUN
sc-1149	405	12	iaas	iaas	NOUN
sc-1149	405	13	.	.	PUNCT
sc-1149	406	1	collaboratecom	collaboratecom	PROPN
sc-1149	406	2	.	.	PUNCT
sc-1149	407	1	pp	pp	ADJ
sc-1149	407	2	.	.	PUNCT
sc-1149	408	1	261	261	NUM
sc-1149	408	2	-	-	NUM
sc-1149	408	3	274	274	NUM
sc-1149	408	4	.	.	PUNCT
sc-1149	408	5	2014	2014	NUM
sc-1149	408	6	.	.	PUNCT
sc-1149	409	1	[	[	X
sc-1149	409	2	16	16	NUM
sc-1149	409	3	]	]	X
sc-1149	409	4	p.	p.	PROPN
sc-1149	409	5	biswas	biswas	PROPN
sc-1149	409	6	,	,	PUNCT
sc-1149	409	7	f.	f.	PROPN
sc-1149	409	8	patwa	patwa	PROPN
sc-1149	409	9	,	,	PUNCT
sc-1149	409	10	r.	r.	PROPN
sc-1149	409	11	sandhu	sandhu	PROPN
sc-1149	409	12	.	.	PUNCT
sc-1149	410	1	content	content	NOUN
sc-1149	410	2	level	level	NOUN
sc-1149	410	3	access	access	NOUN
sc-1149	410	4	control	control	NOUN
sc-1149	410	5	for	for	ADP
sc-1149	410	6	openstack	openstack	PROPN
sc-1149	410	7	swift	swift	ADJ
sc-1149	410	8	storage	storage	NOUN
sc-1149	410	9	.	.	PUNCT
sc-1149	411	1	codaspy	codaspy	NOUN
sc-1149	411	2	.	.	PUNCT
sc-1149	412	1	123	123	NUM
sc-1149	412	2	-	-	SYM
sc-1149	412	3	126	126	NUM
sc-1149	412	4	.	.	PUNCT
sc-1149	413	1	2015	2015	NUM
sc-1149	413	2	.	.	PUNCT
sc-1149	414	1	[	[	X
sc-1149	414	2	17	17	NUM
sc-1149	414	3	]	]	X
sc-1149	414	4	p.	p.	PROPN
sc-1149	414	5	biswas	biswas	PROPN
sc-1149	414	6	,	,	PUNCT
sc-1149	414	7	r.	r.	PROPN
sc-1149	414	8	sandhu	sandhu	PROPN
sc-1149	414	9	,	,	PUNCT
sc-1149	414	10	r.	r.	PROPN
sc-1149	414	11	krishnan	krishnan	PROPN
sc-1149	414	12	.	.	PUNCT
sc-1149	415	1	an	an	DET
sc-1149	415	2	attribute	attribute	NOUN
sc-1149	415	3	based	base	VERB
sc-1149	415	4	protection	protection	NOUN
sc-1149	415	5	model	model	NOUN
sc-1149	415	6	for	for	ADP
sc-1149	415	7	json	json	NOUN
sc-1149	415	8	documents	document	NOUN
sc-1149	415	9	.	.	PUNCT
sc-1149	416	1	in	in	ADP
sc-1149	416	2	nss	ns	NOUN
sc-1149	416	3	.	.	PUNCT
sc-1149	416	4	303	303	NUM
sc-1149	416	5	-	-	SYM
sc-1149	416	6	317	317	NUM
sc-1149	416	7	,	,	PUNCT
sc-1149	416	8	2016	2016	NUM
sc-1149	416	9	.	.	PUNCT
sc-1149	417	1	[	[	X
sc-1149	417	2	18	18	NUM
sc-1149	417	3	]	]	X
sc-1149	417	4	d.	d.	PROPN
sc-1149	417	5	lin	lin	PROPN
sc-1149	417	6	,	,	PUNCT
sc-1149	417	7	p.	p.	PROPN
sc-1149	417	8	rao	rao	PROPN
sc-1149	417	9	,	,	PUNCT
sc-1149	417	10	e.	e.	PROPN
sc-1149	417	11	bertino	bertino	PROPN
sc-1149	417	12	,	,	PUNCT
sc-1149	417	13	n.	n.	PROPN
sc-1149	417	14	li	li	PROPN
sc-1149	417	15	,	,	PUNCT
sc-1149	417	16	j.	j.	PROPN
sc-1149	417	17	lobo	lobo	PROPN
sc-1149	417	18	,	,	PUNCT
sc-1149	417	19	policy	policy	NOUN
sc-1149	417	20	decomposition	decomposition	NOUN
sc-1149	417	21	for	for	ADP
sc-1149	417	22	collaborative	collaborative	ADJ
sc-1149	417	23	access	access	NOUN
sc-1149	417	24	control	control	NOUN
sc-1149	417	25	,	,	PUNCT
sc-1149	417	26	sacmat	sacmat	NOUN
sc-1149	417	27	2008	2008	NUM
sc-1149	417	28	:	:	PUNCT
sc-1149	417	29	103	103	NUM
sc-1149	417	30	-	-	SYM
sc-1149	417	31	112	112	NUM
sc-1149	417	32	.	.	PUNCT
sc-1149	418	1	[	[	X
sc-1149	418	2	19	19	NUM
sc-1149	418	3	]	]	PUNCT
sc-1149	418	4	a.	a.	NOUN
sc-1149	418	5	madani	madani	PROPN
sc-1149	418	6	,	,	PUNCT
sc-1149	418	7	m.	m.	NOUN
sc-1149	418	8	erradi	erradi	PROPN
sc-1149	418	9	,	,	PUNCT
sc-1149	418	10	y.	y.	PROPN
sc-1149	418	11	benkaouz	benkaouz	PROPN
sc-1149	418	12	.	.	PUNCT
sc-1149	419	1	access	access	NOUN
sc-1149	419	2	control	control	NOUN
sc-1149	419	3	in	in	ADP
sc-1149	419	4	a	a	DET
sc-1149	419	5	collaborative	collaborative	ADJ
sc-1149	419	6	session	session	NOUN
sc-1149	419	7	in	in	ADP
sc-1149	419	8	multi	multi	PROPN
sc-1149	419	9	tenant	tenant	PROPN
sc-1149	419	10	environment	environment	NOUN
sc-1149	419	11	.	.	PUNCT
sc-1149	420	1	11th	11th	ADJ
sc-1149	420	2	international	international	ADJ
sc-1149	420	3	conference	conference	NOUN
sc-1149	420	4	on	on	ADP
sc-1149	420	5	information	information	NOUN
sc-1149	420	6	assurance	assurance	NOUN
sc-1149	420	7	and	and	CCONJ
sc-1149	420	8	12	12	NUM
sc-1149	420	9	eai	eai	NOUN
sc-1149	420	10	endorsed	endorse	VERB
sc-1149	420	11	transactions	transaction	NOUN
sc-1149	420	12	on	on	ADP
sc-1149	420	13	smart	smart	ADJ
sc-1149	420	14	cities	city	NOUN
sc-1149	420	15	02	02	NUM
sc-1149	420	16	2018	2018	NUM
sc-1149	420	17	06	06	NUM
sc-1149	420	18	2018	2018	NUM
sc-1149	420	19	|	|	ADV
sc-1149	420	20	volume	volume	NOUN
sc-1149	420	21	2	2	NUM
sc-1149	420	22	|	|	ADV
sc-1149	420	23	issue	issue	VERB
sc-1149	420	24	8	8	NUM
sc-1149	420	25	|	|	ADV
sc-1149	420	26	e3	e3	VERB
sc-1149	420	27	c	c	NOUN
sc-1149	420	28	-	-	PUNCT
sc-1149	420	29	abac	abac	ADJ
sc-1149	420	30	:	:	PUNCT
sc-1149	420	31	an	an	DET
sc-1149	420	32	abac	abac	ADJ
sc-1149	420	33	based	base	VERB
sc-1149	420	34	model	model	NOUN
sc-1149	420	35	for	for	ADP
sc-1149	420	36	collaboration	collaboration	NOUN
sc-1149	420	37	in	in	ADP
sc-1149	420	38	multi	multi	ADJ
sc-1149	420	39	-	-	ADJ
sc-1149	420	40	tenant	tenant	ADJ
sc-1149	420	41	environment	environment	NOUN
sc-1149	420	42	security	security	NOUN
sc-1149	420	43	,	,	PUNCT
sc-1149	420	44	marrakech	marrakech	NOUN
sc-1149	420	45	,	,	PUNCT
sc-1149	420	46	december	december	PROPN
sc-1149	420	47	2015	2015	NUM
sc-1149	420	48	.	.	PUNCT
sc-1149	421	1	[	[	X
sc-1149	421	2	20	20	NUM
sc-1149	421	3	]	]	PUNCT
sc-1149	421	4	b.	b.	PROPN
sc-1149	421	5	tang	tang	PROPN
sc-1149	421	6	,	,	PUNCT
sc-1149	421	7	r.	r.	PROPN
sc-1149	421	8	sandhu	sandhu	PROPN
sc-1149	421	9	,	,	PUNCT
sc-1149	421	10	q.	q.	PROPN
sc-1149	421	11	li	li	PROPN
sc-1149	421	12	.	.	PUNCT
sc-1149	421	13	multi	multi	ADJ
sc-1149	421	14	-	-	ADJ
sc-1149	421	15	tenancy	tenancy	ADJ
sc-1149	421	16	authorization	authorization	NOUN
sc-1149	421	17	models	model	NOUN
sc-1149	421	18	for	for	ADP
sc-1149	421	19	collaborative	collaborative	ADJ
sc-1149	421	20	cloud	cloud	NOUN
sc-1149	421	21	services	service	NOUN
sc-1149	421	22	.	.	PUNCT
sc-1149	422	1	in	in	ADP
sc-1149	422	2	ieee	ieee	PROPN
sc-1149	422	3	international	international	ADJ
sc-1149	422	4	conference	conference	NOUN
sc-1149	422	5	on	on	ADP
sc-1149	422	6	collaboration	collaboration	NOUN
sc-1149	422	7	technologies	technology	NOUN
sc-1149	422	8	and	and	CCONJ
sc-1149	422	9	systems	system	NOUN
sc-1149	422	10	,	,	PUNCT
sc-1149	422	11	2013	2013	NUM
sc-1149	422	12	.	.	PUNCT
sc-1149	423	1	[	[	X
sc-1149	423	2	21	21	NUM
sc-1149	423	3	]	]	PUNCT
sc-1149	423	4	m.	m.	NOUN
sc-1149	423	5	a.	a.	PROPN
sc-1149	423	6	madani	madani	PROPN
sc-1149	423	7	,	,	PUNCT
sc-1149	423	8	m.	m.	NOUN
sc-1149	423	9	erradi	erradi	PROPN
sc-1149	423	10	,	,	PUNCT
sc-1149	423	11	y.	y.	PROPN
sc-1149	423	12	benkaouz	benkaouz	PROPN
sc-1149	423	13	.	.	PUNCT
sc-1149	424	1	a	a	DET
sc-1149	424	2	collaborative	collaborative	ADJ
sc-1149	424	3	task	task	NOUN
sc-1149	424	4	role	role	NOUN
sc-1149	424	5	based	base	VERB
sc-1149	424	6	access	access	PROPN
sc-1149	424	7	control	control	PROPN
sc-1149	424	8	model	model	PROPN
sc-1149	424	9	.	.	PUNCT
sc-1149	425	1	journal	journal	PROPN
sc-1149	425	2	of	of	ADP
sc-1149	425	3	information	information	NOUN
sc-1149	425	4	assurance	assurance	NOUN
sc-1149	425	5	and	and	CCONJ
sc-1149	425	6	security	security	NOUN
sc-1149	425	7	,	,	PUNCT
sc-1149	425	8	vol	vol	NOUN
sc-1149	425	9	.	.	PROPN
sc-1149	425	10	11	11	NUM
sc-1149	425	11	,	,	PUNCT
sc-1149	425	12	no	no	INTJ
sc-1149	425	13	.	.	NOUN
sc-1149	425	14	6	6	NUM
sc-1149	425	15	,	,	PUNCT
sc-1149	425	16	pp	pp	ADJ
sc-1149	425	17	.	.	PUNCT
sc-1149	426	1	348	348	NUM
sc-1149	426	2	-	-	SYM
sc-1149	426	3	358	358	NUM
sc-1149	426	4	,	,	PUNCT
sc-1149	426	5	2016	2016	NUM
sc-1149	426	6	.	.	PUNCT
sc-1149	427	1	13	13	NUM
sc-1149	427	2	eai	eai	PROPN
sc-1149	427	3	endorsed	endorse	VERB
sc-1149	427	4	transactions	transaction	NOUN
sc-1149	427	5	on	on	ADP
sc-1149	427	6	smart	smart	ADJ
sc-1149	427	7	cities	city	NOUN
sc-1149	427	8	02	02	NUM
sc-1149	427	9	2018	2018	NUM
sc-1149	427	10	06	06	NUM
sc-1149	427	11	2018	2018	NUM
sc-1149	427	12	|	|	ADV
sc-1149	427	13	volume	volume	NOUN
sc-1149	427	14	2	2	NUM
sc-1149	427	15	|	|	ADV
sc-1149	427	16	issue	issue	VERB
sc-1149	427	17	8	8	NUM
sc-1149	427	18	|	|	ADV
sc-1149	427	19	e3	e3	VERB
sc-1149	427	20	1	1	NUM
sc-1149	427	21	introduction	introduction	NOUN
sc-1149	427	22	2	2	NUM
sc-1149	427	23	background	background	NOUN
sc-1149	427	24	3	3	NUM
sc-1149	427	25	related	relate	VERB
sc-1149	427	26	work	work	NOUN
sc-1149	427	27	4	4	NUM
sc-1149	427	28	c	c	NOUN
sc-1149	427	29	-	-	PUNCT
sc-1149	427	30	abac	abac	ADJ
sc-1149	427	31	:	:	PUNCT
sc-1149	427	32	the	the	DET
sc-1149	427	33	collaboration	collaboration	NOUN
sc-1149	427	34	abac	abac	ADJ
sc-1149	427	35	model	model	NOUN
sc-1149	427	36	4.1	4.1	NUM
sc-1149	427	37	a	a	DET
sc-1149	427	38	collaborative	collaborative	ADJ
sc-1149	427	39	tenant	tenant	NOUN
sc-1149	427	40	4.2	4.2	NUM
sc-1149	427	41	a	a	DET
sc-1149	427	42	business	business	NOUN
sc-1149	427	43	process	process	NOUN
sc-1149	427	44	4.3	4.3	NUM
sc-1149	427	45	assignuser	assignuser	NOUN
sc-1149	427	46	function	function	VERB
sc-1149	427	47	4.4	4.4	NUM
sc-1149	427	48	usedobject	usedobject	PROPN
sc-1149	427	49	function	function	NOUN
sc-1149	427	50	4.5	4.5	NUM
sc-1149	427	51	a	a	DET
sc-1149	427	52	collaboration	collaboration	NOUN
sc-1149	427	53	attributes	attribute	NOUN
sc-1149	427	54	based	base	VERB
sc-1149	427	55	access	access	NOUN
sc-1149	427	56	control	control	NOUN
sc-1149	427	57	:	:	PUNCT
sc-1149	427	58	c	c	X
sc-1149	427	59	-	-	PUNCT
sc-1149	427	60	abac	abac	ADJ
sc-1149	427	61	model	model	NOUN
sc-1149	427	62	4.6	4.6	NUM
sc-1149	427	63	example	example	NOUN
sc-1149	427	64	:	:	PUNCT
sc-1149	427	65	c	c	X
sc-1149	427	66	-	-	PUNCT
sc-1149	427	67	abac	abac	ADJ
sc-1149	427	68	authorizations	authorization	NOUN
sc-1149	427	69	5	5	NUM
sc-1149	427	70	implementation	implementation	NOUN
sc-1149	427	71	5.1	5.1	NUM
sc-1149	427	72	system	system	NOUN
sc-1149	427	73	architecture	architecture	NOUN
sc-1149	427	74	5.2	5.2	NUM
sc-1149	427	75	enforcement	enforcement	NOUN
sc-1149	427	76	model	model	NOUN
sc-1149	427	77	5.3	5.3	NUM
sc-1149	427	78	evaluation	evaluation	NOUN
sc-1149	427	79	6	6	NUM
sc-1149	427	80	conclusion	conclusion	NOUN