id	sid	tid	token	lemma	pos
fbem-21457	1	1	frontiers	frontier	NOUN
fbem-21457	1	2	in	in	ADP
fbem-21457	1	3	business	business	NOUN
fbem-21457	1	4	,	,	PUNCT
fbem-21457	1	5	economics	economic	NOUN
fbem-21457	1	6	and	and	CCONJ
fbem-21457	1	7	management	management	NOUN
fbem-21457	1	8	issn	issn	PROPN
fbem-21457	1	9	:	:	PUNCT
fbem-21457	1	10	2766	2766	NUM
fbem-21457	1	11	-	-	PUNCT
fbem-21457	1	12	824x	824x	NUM
fbem-21457	1	13	|	|	ADJ
fbem-21457	1	14	vol	vol	NOUN
fbem-21457	1	15	.	.	PROPN
fbem-21457	1	16	15	15	NUM
fbem-21457	1	17	,	,	PUNCT
fbem-21457	1	18	no	no	INTJ
fbem-21457	1	19	.	.	NOUN
fbem-21457	1	20	1	1	NUM
fbem-21457	1	21	,	,	PUNCT
fbem-21457	1	22	2024	2024	NUM
fbem-21457	1	23	321	321	NUM
fbem-21457	1	24	citespace‐based	citespace‐base	VERB
fbem-21457	1	25	logistics	logistic	NOUN
fbem-21457	1	26	distribution	distribution	NOUN
fbem-21457	1	27	center	center	NOUN
fbem-21457	1	28	site	site	NOUN
fbem-21457	1	29	selection	selection	NOUN
fbem-21457	1	30	research	research	PROPN
fbem-21457	1	31	li	li	PROPN
fbem-21457	1	32	liu1	liu1	PROPN
fbem-21457	1	33	,	,	PUNCT
fbem-21457	1	34	*	*	PUNCT
fbem-21457	1	35	,	,	PUNCT
fbem-21457	1	36	shiyi	shiyi	PROPN
fbem-21457	1	37	liu2	liu2	PROPN
fbem-21457	1	38	1	1	NUM
fbem-21457	1	39	school	school	NOUN
fbem-21457	1	40	of	of	ADP
fbem-21457	1	41	economics	economic	NOUN
fbem-21457	1	42	and	and	CCONJ
fbem-21457	1	43	management	management	NOUN
fbem-21457	1	44	,	,	PUNCT
fbem-21457	1	45	southwest	southwest	ADJ
fbem-21457	1	46	petroleum	petroleum	PROPN
fbem-21457	1	47	university	university	PROPN
fbem-21457	1	48	,	,	PUNCT
fbem-21457	1	49	sichuan	sichuan	PROPN
fbem-21457	1	50	chengdu	chengdu	PROPN
fbem-21457	1	51	610500	610500	PROPN
fbem-21457	1	52	,	,	PUNCT
fbem-21457	1	53	china	china	PROPN
fbem-21457	1	54	2	2	NUM
fbem-21457	1	55	school	school	NOUN
fbem-21457	1	56	of	of	ADP
fbem-21457	1	57	economics	economic	NOUN
fbem-21457	1	58	and	and	CCONJ
fbem-21457	1	59	management	management	NOUN
fbem-21457	1	60	,	,	PUNCT
fbem-21457	1	61	southwest	southwest	ADJ
fbem-21457	1	62	petroleum	petroleum	PROPN
fbem-21457	1	63	university	university	PROPN
fbem-21457	1	64	,	,	PUNCT
fbem-21457	1	65	sichuan	sichuan	PROPN
fbem-21457	1	66	chengdu	chengdu	PROPN
fbem-21457	1	67	610500	610500	PROPN
fbem-21457	1	68	,	,	PUNCT
fbem-21457	1	69	china	china	PROPN
fbem-21457	1	70	*	*	PUNCT
fbem-21457	1	71	corresponding	correspond	VERB
fbem-21457	1	72	author	author	NOUN
fbem-21457	1	73	:	:	PUNCT
fbem-21457	1	74	li	li	PROPN
fbem-21457	1	75	liu	liu	PROPN
fbem-21457	1	76	(	(	PUNCT
fbem-21457	1	77	email	email	NOUN
fbem-21457	1	78	:	:	PUNCT
fbem-21457	1	79	1593123371@qq.com	1593123371@qq.com	NUM
fbem-21457	1	80	)	)	PUNCT
fbem-21457	1	81	abstract	abstract	NOUN
fbem-21457	1	82	:	:	PUNCT
fbem-21457	1	83	china	china	PROPN
fbem-21457	1	84	's	's	PART
fbem-21457	1	85	logistics	logistic	NOUN
fbem-21457	1	86	industry	industry	NOUN
fbem-21457	1	87	is	be	AUX
fbem-21457	1	88	developing	develop	VERB
fbem-21457	1	89	at	at	ADP
fbem-21457	1	90	a	a	DET
fbem-21457	1	91	high	high	ADJ
fbem-21457	1	92	speed	speed	NOUN
fbem-21457	1	93	,	,	PUNCT
fbem-21457	1	94	but	but	CCONJ
fbem-21457	1	95	the	the	DET
fbem-21457	1	96	distribution	distribution	NOUN
fbem-21457	1	97	efficiency	efficiency	NOUN
fbem-21457	1	98	ca	can	AUX
fbem-21457	1	99	n't	not	PART
fbem-21457	1	100	match	match	VERB
fbem-21457	1	101	with	with	ADP
fbem-21457	1	102	it	it	PRON
fbem-21457	1	103	,	,	PUNCT
fbem-21457	1	104	to	to	PART
fbem-21457	1	105	reduce	reduce	VERB
fbem-21457	1	106	the	the	DET
fbem-21457	1	107	waste	waste	NOUN
fbem-21457	1	108	of	of	ADP
fbem-21457	1	109	resources	resource	NOUN
fbem-21457	1	110	and	and	CCONJ
fbem-21457	1	111	costs	cost	NOUN
fbem-21457	1	112	on	on	ADP
fbem-21457	1	113	the	the	DET
fbem-21457	1	114	way	way	NOUN
fbem-21457	1	115	of	of	ADP
fbem-21457	1	116	distribution	distribution	NOUN
fbem-21457	1	117	,	,	PUNCT
fbem-21457	1	118	it	it	PRON
fbem-21457	1	119	is	be	AUX
fbem-21457	1	120	crucial	crucial	ADJ
fbem-21457	1	121	to	to	PART
fbem-21457	1	122	study	study	VERB
fbem-21457	1	123	and	and	CCONJ
fbem-21457	1	124	improve	improve	VERB
fbem-21457	1	125	the	the	DET
fbem-21457	1	126	distribution	distribution	NOUN
fbem-21457	1	127	center	center	NOUN
fbem-21457	1	128	siting	siting	NOUN
fbem-21457	1	129	issue	issue	NOUN
fbem-21457	1	130	.	.	PUNCT
fbem-21457	2	1	taking	take	VERB
fbem-21457	2	2	the	the	DET
fbem-21457	2	3	494	494	NUM
fbem-21457	2	4	core	core	NOUN
fbem-21457	2	5	journals	journal	NOUN
fbem-21457	2	6	on	on	ADP
fbem-21457	2	7	the	the	DET
fbem-21457	2	8	study	study	NOUN
fbem-21457	2	9	of	of	ADP
fbem-21457	2	10	logistics	logistic	NOUN
fbem-21457	2	11	distribution	distribution	NOUN
fbem-21457	2	12	center	center	NOUN
fbem-21457	2	13	siting	siting	NOUN
fbem-21457	2	14	in	in	ADP
fbem-21457	2	15	knowledge	knowledge	NOUN
fbem-21457	2	16	network	network	NOUN
fbem-21457	2	17	as	as	ADP
fbem-21457	2	18	the	the	DET
fbem-21457	2	19	basic	basic	ADJ
fbem-21457	2	20	data	datum	NOUN
fbem-21457	2	21	,	,	PUNCT
fbem-21457	2	22	citespace	citespace	NOUN
fbem-21457	2	23	is	be	AUX
fbem-21457	2	24	used	use	VERB
fbem-21457	2	25	to	to	PART
fbem-21457	2	26	visualize	visualize	VERB
fbem-21457	2	27	and	and	CCONJ
fbem-21457	2	28	analyze	analyze	VERB
fbem-21457	2	29	the	the	DET
fbem-21457	2	30	related	relate	VERB
fbem-21457	2	31	literature	literature	NOUN
fbem-21457	2	32	in	in	ADP
fbem-21457	2	33	this	this	DET
fbem-21457	2	34	research	research	NOUN
fbem-21457	2	35	field	field	NOUN
fbem-21457	2	36	.	.	PUNCT
fbem-21457	3	1	through	through	ADP
fbem-21457	3	2	the	the	DET
fbem-21457	3	3	keyword	keyword	NOUN
fbem-21457	3	4	clustering	cluster	VERB
fbem-21457	3	5	analysis	analysis	NOUN
fbem-21457	3	6	,	,	PUNCT
fbem-21457	3	7	this	this	DET
fbem-21457	3	8	field	field	NOUN
fbem-21457	3	9	can	can	AUX
fbem-21457	3	10	be	be	AUX
fbem-21457	3	11	divided	divide	VERB
fbem-21457	3	12	into	into	ADP
fbem-21457	3	13	four	four	NUM
fbem-21457	3	14	directions	direction	NOUN
fbem-21457	3	15	:	:	PUNCT
fbem-21457	3	16	the	the	DET
fbem-21457	3	17	main	main	ADJ
fbem-21457	3	18	body	body	NOUN
fbem-21457	3	19	of	of	ADP
fbem-21457	3	20	research	research	NOUN
fbem-21457	3	21	,	,	PUNCT
fbem-21457	3	22	the	the	DET
fbem-21457	3	23	influence	influence	NOUN
fbem-21457	3	24	factors	factor	NOUN
fbem-21457	3	25	of	of	ADP
fbem-21457	3	26	site	site	NOUN
fbem-21457	3	27	selection	selection	NOUN
fbem-21457	3	28	,	,	PUNCT
fbem-21457	3	29	the	the	DET
fbem-21457	3	30	purpose	purpose	NOUN
fbem-21457	3	31	of	of	ADP
fbem-21457	3	32	site	site	NOUN
fbem-21457	3	33	selection	selection	NOUN
fbem-21457	3	34	,	,	PUNCT
fbem-21457	3	35	and	and	CCONJ
fbem-21457	3	36	site	site	NOUN
fbem-21457	3	37	selection	selection	NOUN
fbem-21457	3	38	methods	method	NOUN
fbem-21457	3	39	,	,	PUNCT
fbem-21457	3	40	and	and	CCONJ
fbem-21457	3	41	the	the	DET
fbem-21457	3	42	comprehensive	comprehensive	ADJ
fbem-21457	3	43	analysis	analysis	NOUN
fbem-21457	3	44	shows	show	VERB
fbem-21457	3	45	that	that	SCONJ
fbem-21457	3	46	the	the	DET
fbem-21457	3	47	early	early	ADJ
fbem-21457	3	48	focus	focus	NOUN
fbem-21457	3	49	of	of	ADP
fbem-21457	3	50	china	china	PROPN
fbem-21457	3	51	's	's	PART
fbem-21457	3	52	research	research	NOUN
fbem-21457	3	53	is	be	AUX
fbem-21457	3	54	on	on	ADP
fbem-21457	3	55	the	the	DET
fbem-21457	3	56	site	site	NOUN
fbem-21457	3	57	selection	selection	NOUN
fbem-21457	3	58	methods	method	NOUN
fbem-21457	3	59	,	,	PUNCT
fbem-21457	3	60	such	such	ADJ
fbem-21457	3	61	as	as	ADP
fbem-21457	3	62	genetic	genetic	ADJ
fbem-21457	3	63	algorithm	algorithm	NOUN
fbem-21457	3	64	and	and	CCONJ
fbem-21457	3	65	center	center	NOUN
fbem-21457	3	66	of	of	ADP
fbem-21457	3	67	gravity	gravity	NOUN
fbem-21457	3	68	method	method	NOUN
fbem-21457	3	69	,	,	PUNCT
fbem-21457	3	70	and	and	CCONJ
fbem-21457	3	71	the	the	DET
fbem-21457	3	72	future	future	ADJ
fbem-21457	3	73	research	research	NOUN
fbem-21457	3	74	direction	direction	NOUN
fbem-21457	3	75	is	be	AUX
fbem-21457	3	76	the	the	DET
fbem-21457	3	77	joint	joint	ADJ
fbem-21457	3	78	optimization	optimization	NOUN
fbem-21457	3	79	of	of	ADP
fbem-21457	3	80	the	the	DET
fbem-21457	3	81	site	site	NOUN
fbem-21457	3	82	selection	selection	NOUN
fbem-21457	3	83	-	-	PUNCT
fbem-21457	3	84	path	path	NOUN
fbem-21457	3	85	and	and	CCONJ
fbem-21457	3	86	the	the	DET
fbem-21457	3	87	two	two	NUM
fbem-21457	3	88	-	-	PUNCT
fbem-21457	3	89	layer	layer	NOUN
fbem-21457	3	90	planning	planning	NOUN
fbem-21457	3	91	.	.	PUNCT
fbem-21457	4	1	keywords	keyword	NOUN
fbem-21457	4	2	:	:	PUNCT
fbem-21457	4	3	logistics	logistic	NOUN
fbem-21457	4	4	and	and	CCONJ
fbem-21457	4	5	distribution	distribution	NOUN
fbem-21457	4	6	center	center	NOUN
fbem-21457	4	7	site	site	NOUN
fbem-21457	4	8	selection	selection	NOUN
fbem-21457	4	9	;	;	PUNCT
fbem-21457	4	10	citespace	citespace	NOUN
fbem-21457	4	11	visual	visual	ADJ
fbem-21457	4	12	analytics	analytic	NOUN
fbem-21457	4	13	;	;	PUNCT
fbem-21457	4	14	site	site	NOUN
fbem-21457	4	15	selection	selection	NOUN
fbem-21457	4	16	methods	method	NOUN
fbem-21457	4	17	.	.	PUNCT
fbem-21457	5	1	1	1	X
fbem-21457	5	2	.	.	X
fbem-21457	5	3	introduction	introduction	NOUN
fbem-21457	5	4	in	in	ADP
fbem-21457	5	5	recent	recent	ADJ
fbem-21457	5	6	years	year	NOUN
fbem-21457	5	7	,	,	PUNCT
fbem-21457	5	8	china	china	PROPN
fbem-21457	5	9	's	's	PART
fbem-21457	5	10	logistics	logistic	NOUN
fbem-21457	5	11	industry	industry	NOUN
fbem-21457	5	12	has	have	AUX
fbem-21457	5	13	developed	develop	VERB
fbem-21457	5	14	rapidly	rapidly	ADV
fbem-21457	5	15	,	,	PUNCT
fbem-21457	5	16	but	but	CCONJ
fbem-21457	5	17	the	the	DET
fbem-21457	5	18	distribution	distribution	NOUN
fbem-21457	5	19	efficiency	efficiency	NOUN
fbem-21457	5	20	can	can	AUX
fbem-21457	5	21	not	not	PART
fbem-21457	5	22	match	match	VERB
fbem-21457	5	23	it	it	PRON
fbem-21457	5	24	.	.	PUNCT
fbem-21457	6	1	the	the	DET
fbem-21457	6	2	problem	problem	NOUN
fbem-21457	6	3	of	of	ADP
fbem-21457	6	4	destruction	destruction	NOUN
fbem-21457	6	5	of	of	ADP
fbem-21457	6	6	products	product	NOUN
fbem-21457	6	7	in	in	ADP
fbem-21457	6	8	the	the	DET
fbem-21457	6	9	distribution	distribution	NOUN
fbem-21457	6	10	process	process	NOUN
fbem-21457	6	11	has	have	AUX
fbem-21457	6	12	caused	cause	VERB
fbem-21457	6	13	a	a	DET
fbem-21457	6	14	huge	huge	ADJ
fbem-21457	6	15	waste	waste	NOUN
fbem-21457	6	16	of	of	ADP
fbem-21457	6	17	resources	resource	NOUN
fbem-21457	6	18	and	and	CCONJ
fbem-21457	6	19	costs	cost	NOUN
fbem-21457	6	20	.	.	PUNCT
fbem-21457	7	1	the	the	DET
fbem-21457	7	2	factors	factor	NOUN
fbem-21457	7	3	leading	lead	VERB
fbem-21457	7	4	to	to	ADP
fbem-21457	7	5	the	the	DET
fbem-21457	7	6	loss	loss	NOUN
fbem-21457	7	7	can	can	AUX
fbem-21457	7	8	be	be	AUX
fbem-21457	7	9	divided	divide	VERB
fbem-21457	7	10	into	into	ADP
fbem-21457	7	11	several	several	ADJ
fbem-21457	7	12	aspects	aspect	NOUN
fbem-21457	7	13	,	,	PUNCT
fbem-21457	7	14	such	such	ADJ
fbem-21457	7	15	as	as	ADP
fbem-21457	7	16	inappropriate	inappropriate	ADJ
fbem-21457	7	17	choice	choice	NOUN
fbem-21457	7	18	of	of	ADP
fbem-21457	7	19	distribution	distribution	NOUN
fbem-21457	7	20	center	center	NOUN
fbem-21457	7	21	location	location	NOUN
fbem-21457	7	22	,	,	PUNCT
fbem-21457	7	23	irrational	irrational	ADJ
fbem-21457	7	24	planning	planning	NOUN
fbem-21457	7	25	of	of	ADP
fbem-21457	7	26	distribution	distribution	NOUN
fbem-21457	7	27	path	path	NOUN
fbem-21457	7	28	,	,	PUNCT
fbem-21457	7	29	cumbersome	cumbersome	ADJ
fbem-21457	7	30	distribution	distribution	NOUN
fbem-21457	7	31	links	link	NOUN
fbem-21457	7	32	,	,	PUNCT
fbem-21457	7	33	and	and	CCONJ
fbem-21457	7	34	backward	backward	ADJ
fbem-21457	7	35	distribution	distribution	NOUN
fbem-21457	7	36	conditions	condition	NOUN
fbem-21457	7	37	,	,	PUNCT
fbem-21457	7	38	the	the	DET
fbem-21457	7	39	most	most	ADV
fbem-21457	7	40	important	important	ADJ
fbem-21457	7	41	factor	factor	NOUN
fbem-21457	7	42	is	be	AUX
fbem-21457	7	43	the	the	DET
fbem-21457	7	44	inappropriate	inappropriate	ADJ
fbem-21457	7	45	choice	choice	NOUN
fbem-21457	7	46	of	of	ADP
fbem-21457	7	47	distribution	distribution	NOUN
fbem-21457	7	48	center	center	NOUN
fbem-21457	7	49	location	location	NOUN
fbem-21457	7	50	.	.	PUNCT
fbem-21457	8	1	in	in	ADP
fbem-21457	8	2	1909	1909	NUM
fbem-21457	8	3	,	,	PUNCT
fbem-21457	8	4	alfred	alfred	PROPN
fbem-21457	8	5	weber	weber	PROPN
fbem-21457	8	6	[	[	X
fbem-21457	8	7	1	1	X
fbem-21457	8	8	]	]	PUNCT
fbem-21457	8	9	for	for	ADP
fbem-21457	8	10	the	the	DET
fbem-21457	8	11	first	first	ADJ
fbem-21457	8	12	time	time	NOUN
fbem-21457	8	13	proposed	propose	VERB
fbem-21457	8	14	the	the	DET
fbem-21457	8	15	theory	theory	NOUN
fbem-21457	8	16	of	of	ADP
fbem-21457	8	17	logistics	logistic	NOUN
fbem-21457	8	18	distribution	distribution	NOUN
fbem-21457	8	19	center	center	NOUN
fbem-21457	8	20	location	location	NOUN
fbem-21457	8	21	.	.	PUNCT
fbem-21457	9	1	distribution	distribution	NOUN
fbem-21457	9	2	center	center	NOUN
fbem-21457	9	3	location	location	NOUN
fbem-21457	9	4	,	,	PUNCT
fbem-21457	9	5	that	that	ADV
fbem-21457	9	6	is	is	ADV
fbem-21457	9	7	,	,	PUNCT
fbem-21457	9	8	there	there	PRON
fbem-21457	9	9	are	be	VERB
fbem-21457	9	10	multiple	multiple	ADJ
fbem-21457	9	11	supply	supply	NOUN
fbem-21457	9	12	points	point	NOUN
fbem-21457	9	13	and	and	CCONJ
fbem-21457	9	14	multiple	multiple	ADJ
fbem-21457	9	15	demand	demand	NOUN
fbem-21457	9	16	points	point	NOUN
fbem-21457	9	17	in	in	ADP
fbem-21457	9	18	the	the	DET
fbem-21457	9	19	region	region	NOUN
fbem-21457	9	20	,	,	PUNCT
fbem-21457	9	21	select	select	VERB
fbem-21457	9	22	a	a	DET
fbem-21457	9	23	certain	certain	ADJ
fbem-21457	9	24	number	number	NOUN
fbem-21457	9	25	and	and	CCONJ
fbem-21457	9	26	location	location	NOUN
fbem-21457	9	27	of	of	ADP
fbem-21457	9	28	the	the	DET
fbem-21457	9	29	establishment	establishment	NOUN
fbem-21457	9	30	of	of	ADP
fbem-21457	9	31	distribution	distribution	NOUN
fbem-21457	9	32	centers	center	NOUN
fbem-21457	9	33	and	and	CCONJ
fbem-21457	9	34	optimization	optimization	NOUN
fbem-21457	9	35	of	of	ADP
fbem-21457	9	36	distribution	distribution	NOUN
fbem-21457	9	37	centers	center	NOUN
fbem-21457	9	38	.	.	PUNCT
fbem-21457	10	1	the	the	DET
fbem-21457	10	2	distribution	distribution	NOUN
fbem-21457	10	3	center	center	NOUN
fbem-21457	10	4	between	between	ADP
fbem-21457	10	5	the	the	DET
fbem-21457	10	6	customer	customer	NOUN
fbem-21457	10	7	and	and	CCONJ
fbem-21457	10	8	the	the	DET
fbem-21457	10	9	supplier	supplier	NOUN
fbem-21457	10	10	has	have	VERB
fbem-21457	10	11	the	the	DET
fbem-21457	10	12	role	role	NOUN
fbem-21457	10	13	of	of	ADP
fbem-21457	10	14	the	the	DET
fbem-21457	10	15	top	top	NOUN
fbem-21457	10	16	and	and	CCONJ
fbem-21457	10	17	bottom	bottom	ADJ
fbem-21457	10	18	.	.	PUNCT
fbem-21457	11	1	reasonable	reasonable	ADJ
fbem-21457	11	2	site	site	NOUN
fbem-21457	11	3	planning	planning	NOUN
fbem-21457	11	4	can	can	AUX
fbem-21457	11	5	effectively	effectively	ADV
fbem-21457	11	6	reduce	reduce	VERB
fbem-21457	11	7	costs	cost	NOUN
fbem-21457	11	8	promote	promote	VERB
fbem-21457	11	9	the	the	DET
fbem-21457	11	10	harmony	harmony	NOUN
fbem-21457	11	11	of	of	ADP
fbem-21457	11	12	products	product	NOUN
fbem-21457	11	13	and	and	CCONJ
fbem-21457	11	14	services	service	NOUN
fbem-21457	11	15	,	,	PUNCT
fbem-21457	11	16	and	and	CCONJ
fbem-21457	11	17	to	to	PART
fbem-21457	11	18	ensure	ensure	VERB
fbem-21457	11	19	the	the	DET
fbem-21457	11	20	balance	balance	NOUN
fbem-21457	11	21	of	of	ADP
fbem-21457	11	22	the	the	DET
fbem-21457	11	23	entire	entire	ADJ
fbem-21457	11	24	logistics	logistic	NOUN
fbem-21457	11	25	system	system	NOUN
fbem-21457	11	26	.	.	PUNCT
fbem-21457	12	1	therefore	therefore	ADV
fbem-21457	12	2	,	,	PUNCT
fbem-21457	12	3	how	how	SCONJ
fbem-21457	12	4	to	to	PART
fbem-21457	12	5	choose	choose	VERB
fbem-21457	12	6	the	the	DET
fbem-21457	12	7	right	right	ADJ
fbem-21457	12	8	logistics	logistic	NOUN
fbem-21457	12	9	distribution	distribution	NOUN
fbem-21457	12	10	center	center	NOUN
fbem-21457	12	11	is	be	AUX
fbem-21457	12	12	of	of	ADP
fbem-21457	12	13	research	research	NOUN
fbem-21457	12	14	significance	significance	NOUN
fbem-21457	12	15	.	.	PUNCT
fbem-21457	13	1	this	this	DET
fbem-21457	13	2	paper	paper	NOUN
fbem-21457	13	3	visually	visually	ADV
fbem-21457	13	4	analyzes	analyze	VERB
fbem-21457	13	5	the	the	DET
fbem-21457	13	6	core	core	NOUN
fbem-21457	13	7	journals	journal	NOUN
fbem-21457	13	8	in	in	ADP
fbem-21457	13	9	this	this	DET
fbem-21457	13	10	field	field	NOUN
fbem-21457	13	11	in	in	ADP
fbem-21457	13	12	the	the	DET
fbem-21457	13	13	database	database	NOUN
fbem-21457	13	14	from	from	ADP
fbem-21457	13	15	1998	1998	NUM
fbem-21457	13	16	-	-	SYM
fbem-21457	13	17	2023	2023	NUM
fbem-21457	13	18	through	through	ADP
fbem-21457	13	19	bibliometric	bibliometric	ADJ
fbem-21457	13	20	methods	method	NOUN
fbem-21457	13	21	and	and	CCONJ
fbem-21457	13	22	with	with	ADP
fbem-21457	13	23	the	the	DET
fbem-21457	13	24	help	help	NOUN
fbem-21457	13	25	of	of	ADP
fbem-21457	13	26	the	the	DET
fbem-21457	13	27	citespace	citespace	NOUN
fbem-21457	13	28	visualization	visualization	NOUN
fbem-21457	13	29	tool	tool	NOUN
fbem-21457	13	30	.	.	PUNCT
fbem-21457	14	1	comprehensive	comprehensive	ADJ
fbem-21457	14	2	analyses	analysis	NOUN
fbem-21457	14	3	were	be	AUX
fbem-21457	14	4	conducted	conduct	VERB
fbem-21457	14	5	in	in	ADP
fbem-21457	14	6	terms	term	NOUN
fbem-21457	14	7	of	of	ADP
fbem-21457	14	8	the	the	DET
fbem-21457	14	9	number	number	NOUN
fbem-21457	14	10	of	of	ADP
fbem-21457	14	11	articles	article	NOUN
fbem-21457	14	12	issued	issue	VERB
fbem-21457	14	13	,	,	PUNCT
fbem-21457	14	14	core	core	ADJ
fbem-21457	14	15	research	research	NOUN
fbem-21457	14	16	authors	author	NOUN
fbem-21457	14	17	and	and	CCONJ
fbem-21457	14	18	institutions	institution	NOUN
fbem-21457	14	19	,	,	PUNCT
fbem-21457	14	20	keyword	keyword	NOUN
fbem-21457	14	21	co	co	NOUN
fbem-21457	14	22	-	-	NOUN
fbem-21457	14	23	occurrence	occurrence	NOUN
fbem-21457	14	24	and	and	CCONJ
fbem-21457	14	25	clustering	clustering	NOUN
fbem-21457	14	26	,	,	PUNCT
fbem-21457	14	27	and	and	CCONJ
fbem-21457	14	28	timeline	timeline	NOUN
fbem-21457	14	29	charts	chart	NOUN
fbem-21457	14	30	to	to	PART
fbem-21457	14	31	derive	derive	VERB
fbem-21457	14	32	the	the	DET
fbem-21457	14	33	research	research	NOUN
fbem-21457	14	34	hotspots	hotspot	NOUN
fbem-21457	14	35	and	and	CCONJ
fbem-21457	14	36	development	development	NOUN
fbem-21457	14	37	trends	trend	NOUN
fbem-21457	14	38	of	of	ADP
fbem-21457	14	39	this	this	DET
fbem-21457	14	40	research	research	NOUN
fbem-21457	14	41	field	field	NOUN
fbem-21457	14	42	in	in	ADP
fbem-21457	14	43	a	a	DET
fbem-21457	14	44	certain	certain	ADJ
fbem-21457	14	45	period	period	NOUN
fbem-21457	14	46	.	.	PUNCT
fbem-21457	15	1	2	2	X
fbem-21457	15	2	.	.	X
fbem-21457	15	3	research	research	NOUN
fbem-21457	15	4	methodology	methodology	NOUN
fbem-21457	15	5	and	and	CCONJ
fbem-21457	15	6	data	datum	NOUN
fbem-21457	15	7	sources	source	NOUN
fbem-21457	15	8	2.1	2.1	NUM
fbem-21457	15	9	.	.	PUNCT
fbem-21457	16	1	research	research	NOUN
fbem-21457	16	2	method	method	NOUN
fbem-21457	16	3	to	to	PART
fbem-21457	16	4	comprehensively	comprehensively	ADV
fbem-21457	16	5	explore	explore	VERB
fbem-21457	16	6	the	the	DET
fbem-21457	16	7	research	research	NOUN
fbem-21457	16	8	situation	situation	NOUN
fbem-21457	16	9	of	of	ADP
fbem-21457	16	10	domestic	domestic	ADJ
fbem-21457	16	11	logistics	logistic	NOUN
fbem-21457	16	12	distribution	distribution	NOUN
fbem-21457	16	13	center	center	NOUN
fbem-21457	16	14	site	site	NOUN
fbem-21457	16	15	selection	selection	NOUN
fbem-21457	16	16	,	,	PUNCT
fbem-21457	16	17	this	this	DET
fbem-21457	16	18	paper	paper	NOUN
fbem-21457	16	19	adopts	adopt	VERB
fbem-21457	16	20	the	the	DET
fbem-21457	16	21	bibliometric	bibliometric	ADJ
fbem-21457	16	22	analysis	analysis	NOUN
fbem-21457	16	23	method	method	NOUN
fbem-21457	16	24	,	,	PUNCT
fbem-21457	16	25	using	use	VERB
fbem-21457	16	26	excel	excel	NOUN
fbem-21457	16	27	and	and	CCONJ
fbem-21457	16	28	citespace	citespace	NOUN
fbem-21457	16	29	(	(	PUNCT
fbem-21457	16	30	version	version	NOUN
fbem-21457	16	31	6.1.r6	6.1.r6	NOUN
fbem-21457	16	32	)	)	PUNCT
fbem-21457	16	33	software	software	NOUN
fbem-21457	16	34	to	to	PART
fbem-21457	16	35	analyze	analyze	VERB
fbem-21457	16	36	the	the	DET
fbem-21457	16	37	current	current	ADJ
fbem-21457	16	38	status	status	NOUN
fbem-21457	16	39	of	of	ADP
fbem-21457	16	40	distribution	distribution	NOUN
fbem-21457	16	41	center	center	NOUN
fbem-21457	16	42	site	site	NOUN
fbem-21457	16	43	selection	selection	NOUN
fbem-21457	16	44	research	research	NOUN
fbem-21457	16	45	.	.	PUNCT
fbem-21457	17	1	the	the	DET
fbem-21457	17	2	combination	combination	NOUN
fbem-21457	17	3	of	of	ADP
fbem-21457	17	4	the	the	DET
fbem-21457	17	5	two	two	NUM
fbem-21457	17	6	can	can	AUX
fbem-21457	17	7	visually	visually	ADV
fbem-21457	17	8	show	show	VERB
fbem-21457	17	9	the	the	DET
fbem-21457	17	10	current	current	ADJ
fbem-21457	17	11	status	status	NOUN
fbem-21457	17	12	of	of	ADP
fbem-21457	17	13	domestic	domestic	ADJ
fbem-21457	17	14	distribution	distribution	NOUN
fbem-21457	17	15	center	center	NOUN
fbem-21457	17	16	siting	siting	NOUN
fbem-21457	17	17	research	research	NOUN
fbem-21457	17	18	,	,	PUNCT
fbem-21457	17	19	research	research	NOUN
fbem-21457	17	20	hot	hot	ADJ
fbem-21457	17	21	spots	spot	NOUN
fbem-21457	17	22	,	,	PUNCT
fbem-21457	17	23	and	and	CCONJ
fbem-21457	17	24	future	future	ADJ
fbem-21457	17	25	trends	trend	NOUN
fbem-21457	17	26	.	.	PUNCT
fbem-21457	18	1	2.2	2.2	NUM
fbem-21457	18	2	.	.	PUNCT
fbem-21457	18	3	data	datum	NOUN
fbem-21457	18	4	sources	source	NOUN
fbem-21457	18	5	in	in	ADP
fbem-21457	18	6	this	this	DET
fbem-21457	18	7	paper	paper	NOUN
fbem-21457	18	8	,	,	PUNCT
fbem-21457	18	9	"	"	PUNCT
fbem-21457	18	10	distribution	distribution	NOUN
fbem-21457	18	11	center	center	NOUN
fbem-21457	18	12	siting	siting	NOUN
fbem-21457	18	13	"	"	PUNCT
fbem-21457	18	14	and	and	CCONJ
fbem-21457	18	15	"	"	PUNCT
fbem-21457	18	16	logistics	logistic	NOUN
fbem-21457	18	17	center	center	NOUN
fbem-21457	18	18	siting	siting	NOUN
fbem-21457	18	19	"	"	PUNCT
fbem-21457	18	20	are	be	AUX
fbem-21457	18	21	used	use	VERB
fbem-21457	18	22	as	as	ADP
fbem-21457	18	23	keywords	keyword	NOUN
fbem-21457	18	24	in	in	ADP
fbem-21457	18	25	china	china	PROPN
fbem-21457	18	26	knowledge	knowledge	PROPN
fbem-21457	18	27	network	network	PROPN
fbem-21457	18	28	,	,	PUNCT
fbem-21457	18	29	and	and	CCONJ
fbem-21457	18	30	the	the	DET
fbem-21457	18	31	type	type	NOUN
fbem-21457	18	32	of	of	ADP
fbem-21457	18	33	literature	literature	NOUN
fbem-21457	18	34	selected	select	VERB
fbem-21457	18	35	is	be	AUX
fbem-21457	18	36	"	"	PUNCT
fbem-21457	18	37	academic	academic	ADJ
fbem-21457	18	38	journals	journal	NOUN
fbem-21457	18	39	"	"	PUNCT
fbem-21457	18	40	,	,	PUNCT
fbem-21457	18	41	and	and	CCONJ
fbem-21457	18	42	a	a	DET
fbem-21457	18	43	total	total	NOUN
fbem-21457	18	44	of	of	ADP
fbem-21457	18	45	1,431	1,431	NUM
fbem-21457	18	46	articles	article	NOUN
fbem-21457	18	47	in	in	ADP
fbem-21457	18	48	chinese	chinese	ADJ
fbem-21457	18	49	literature	literature	NOUN
fbem-21457	18	50	from	from	ADP
fbem-21457	18	51	1998	1998	NUM
fbem-21457	18	52	to	to	ADP
fbem-21457	18	53	2023	2023	NUM
fbem-21457	18	54	are	be	AUX
fbem-21457	18	55	retrieved	retrieve	VERB
fbem-21457	18	56	.	.	PUNCT
fbem-21457	19	1	to	to	PART
fbem-21457	19	2	ensure	ensure	VERB
fbem-21457	19	3	the	the	DET
fbem-21457	19	4	comprehensiveness	comprehensiveness	NOUN
fbem-21457	19	5	and	and	CCONJ
fbem-21457	19	6	accuracy	accuracy	NOUN
fbem-21457	19	7	of	of	ADP
fbem-21457	19	8	the	the	DET
fbem-21457	19	9	study	study	NOUN
fbem-21457	19	10	,	,	PUNCT
fbem-21457	19	11	the	the	DET
fbem-21457	19	12	journal	journal	NOUN
fbem-21457	19	13	sources	source	NOUN
fbem-21457	19	14	were	be	AUX
fbem-21457	19	15	selected	select	VERB
fbem-21457	19	16	as	as	ADP
fbem-21457	19	17	"	"	PUNCT
fbem-21457	19	18	beida	beida	NOUN
fbem-21457	19	19	core	core	NOUN
fbem-21457	19	20	"	"	PUNCT
fbem-21457	19	21	and	and	CCONJ
fbem-21457	19	22	"	"	PUNCT
fbem-21457	19	23	cssci	cssci	PROPN
fbem-21457	19	24	"	"	PUNCT
fbem-21457	19	25	,	,	PUNCT
fbem-21457	19	26	and	and	CCONJ
fbem-21457	19	27	finally	finally	ADV
fbem-21457	19	28	494	494	NUM
fbem-21457	19	29	core	core	NOUN
fbem-21457	19	30	journals	journal	NOUN
fbem-21457	19	31	were	be	AUX
fbem-21457	19	32	retrieved	retrieve	VERB
fbem-21457	19	33	,	,	PUNCT
fbem-21457	19	34	which	which	PRON
fbem-21457	19	35	were	be	AUX
fbem-21457	19	36	exported	export	VERB
fbem-21457	19	37	and	and	CCONJ
fbem-21457	19	38	used	use	VERB
fbem-21457	19	39	as	as	ADP
fbem-21457	19	40	the	the	DET
fbem-21457	19	41	research	research	NOUN
fbem-21457	19	42	samples	sample	NOUN
fbem-21457	19	43	.	.	PUNCT
fbem-21457	20	1	3	3	X
fbem-21457	20	2	.	.	X
fbem-21457	20	3	literature	literature	PROPN
fbem-21457	20	4	review	review	PROPN
fbem-21457	20	5	3.1	3.1	NUM
fbem-21457	20	6	.	.	PUNCT
fbem-21457	21	1	literature	literature	NOUN
fbem-21457	21	2	review	review	NOUN
fbem-21457	21	3	on	on	ADP
fbem-21457	21	4	distribution	distribution	NOUN
fbem-21457	21	5	center	center	NOUN
fbem-21457	21	6	site	site	NOUN
fbem-21457	21	7	selection	selection	NOUN
fbem-21457	21	8	methods	method	NOUN
fbem-21457	21	9	site	site	NOUN
fbem-21457	21	10	selection	selection	NOUN
fbem-21457	21	11	methods	method	NOUN
fbem-21457	21	12	can	can	AUX
fbem-21457	21	13	be	be	AUX
fbem-21457	21	14	categorized	categorize	VERB
fbem-21457	21	15	into	into	ADP
fbem-21457	21	16	qualitative	qualitative	NOUN
fbem-21457	21	17	and	and	CCONJ
fbem-21457	21	18	quantitative	quantitative	ADJ
fbem-21457	21	19	,	,	PUNCT
fbem-21457	21	20	and	and	CCONJ
fbem-21457	21	21	they	they	PRON
fbem-21457	21	22	can	can	AUX
fbem-21457	21	23	be	be	AUX
fbem-21457	21	24	used	use	VERB
fbem-21457	21	25	in	in	ADP
fbem-21457	21	26	combination	combination	NOUN
fbem-21457	21	27	.	.	PUNCT
fbem-21457	22	1	qualitative	qualitative	ADJ
fbem-21457	22	2	methods	method	NOUN
fbem-21457	22	3	include	include	VERB
fbem-21457	22	4	an	an	DET
fbem-21457	22	5	expert	expert	NOUN
fbem-21457	22	6	scoring	scoring	NOUN
fbem-21457	22	7	method	method	NOUN
fbem-21457	22	8	and	and	CCONJ
fbem-21457	22	9	the	the	DET
fbem-21457	22	10	delphi	delphi	NOUN
fbem-21457	22	11	method	method	NOUN
fbem-21457	22	12	,	,	PUNCT
fbem-21457	22	13	etc	etc	X
fbem-21457	22	14	.	.	X
fbem-21457	22	15	however	however	ADV
fbem-21457	22	16	,	,	PUNCT
fbem-21457	22	17	qualitative	qualitative	ADJ
fbem-21457	22	18	methods	method	NOUN
fbem-21457	22	19	have	have	VERB
fbem-21457	22	20	some	some	DET
fbem-21457	22	21	defects	defect	NOUN
fbem-21457	22	22	because	because	SCONJ
fbem-21457	22	23	they	they	PRON
fbem-21457	22	24	are	be	AUX
fbem-21457	22	25	too	too	ADV
fbem-21457	22	26	subjective	subjective	ADJ
fbem-21457	22	27	in	in	ADP
fbem-21457	22	28	practical	practical	ADJ
fbem-21457	22	29	application	application	NOUN
fbem-21457	22	30	scenarios	scenario	NOUN
fbem-21457	22	31	.	.	PUNCT
fbem-21457	23	1	quantitative	quantitative	ADJ
fbem-21457	23	2	methods	method	NOUN
fbem-21457	23	3	are	be	AUX
fbem-21457	23	4	more	more	ADV
fbem-21457	23	5	objective	objective	ADJ
fbem-21457	23	6	and	and	CCONJ
fbem-21457	23	7	include	include	VERB
fbem-21457	23	8	the	the	DET
fbem-21457	23	9	center	center	NOUN
fbem-21457	23	10	of	of	ADP
fbem-21457	23	11	gravity	gravity	NOUN
fbem-21457	23	12	method	method	NOUN
fbem-21457	23	13	,	,	PUNCT
fbem-21457	23	14	mathematical	mathematical	ADJ
fbem-21457	23	15	planning	planning	NOUN
fbem-21457	23	16	method	method	NOUN
fbem-21457	23	17	,	,	PUNCT
fbem-21457	23	18	multi	multi	ADJ
fbem-21457	23	19	-	-	ADJ
fbem-21457	23	20	criteria	criterion	NOUN
fbem-21457	23	21	decision	decision	NOUN
fbem-21457	23	22	-	-	PUNCT
fbem-21457	23	23	making	make	VERB
fbem-21457	23	24	method	method	NOUN
fbem-21457	23	25	,	,	PUNCT
fbem-21457	23	26	and	and	CCONJ
fbem-21457	23	27	so	so	ADV
fbem-21457	23	28	on	on	ADV
fbem-21457	23	29	.	.	PUNCT
fbem-21457	24	1	professor	professor	NOUN
fbem-21457	24	2	aiken	aiken	PROPN
fbem-21457	24	3	[	[	X
fbem-21457	24	4	2	2	NUM
fbem-21457	24	5	]	]	PUNCT
fbem-21457	24	6	combined	combine	VERB
fbem-21457	24	7	the	the	DET
fbem-21457	24	8	site	site	NOUN
fbem-21457	24	9	selection	selection	NOUN
fbem-21457	24	10	model	model	NOUN
fbem-21457	24	11	with	with	ADP
fbem-21457	24	12	a	a	DET
fbem-21457	24	13	mathematical	mathematical	ADJ
fbem-21457	24	14	planning	planning	NOUN
fbem-21457	24	15	method	method	NOUN
fbem-21457	24	16	,	,	PUNCT
fbem-21457	24	17	listed	list	VERB
fbem-21457	24	18	the	the	DET
fbem-21457	24	19	constraints	constraint	NOUN
fbem-21457	24	20	according	accord	VERB
fbem-21457	24	21	to	to	ADP
fbem-21457	24	22	the	the	DET
fbem-21457	24	23	actual	actual	ADJ
fbem-21457	24	24	situation	situation	NOUN
fbem-21457	24	25	,	,	PUNCT
fbem-21457	24	26	established	establish	VERB
fbem-21457	24	27	the	the	DET
fbem-21457	24	28	objective	objective	ADJ
fbem-21457	24	29	function	function	NOUN
fbem-21457	24	30	with	with	ADP
fbem-21457	24	31	the	the	DET
fbem-21457	24	32	lowest	low	ADJ
fbem-21457	24	33	site	site	NOUN
fbem-21457	24	34	selection	selection	NOUN
fbem-21457	24	35	cost	cost	NOUN
fbem-21457	24	36	,	,	PUNCT
fbem-21457	24	37	and	and	CCONJ
fbem-21457	24	38	found	find	VERB
fbem-21457	24	39	the	the	DET
fbem-21457	24	40	optimal	optimal	ADJ
fbem-21457	24	41	solution.w.j.stevenso	solution.w.j.stevenso	PROPN
fbem-21457	25	1	[	[	X
fbem-21457	25	2	3	3	X
fbem-21457	25	3	]	]	PUNCT
fbem-21457	25	4	studied	study	VERB
fbem-21457	25	5	the	the	DET
fbem-21457	25	6	distribution	distribution	NOUN
fbem-21457	25	7	route	route	NOUN
fbem-21457	25	8	and	and	CCONJ
fbem-21457	25	9	warehouse	warehouse	NOUN
fbem-21457	25	10	address	address	NOUN
fbem-21457	25	11	problem	problem	NOUN
fbem-21457	25	12	under	under	ADP
fbem-21457	25	13	the	the	DET
fbem-21457	25	14	uncertainty	uncertainty	NOUN
fbem-21457	25	15	of	of	ADP
fbem-21457	25	16	demand	demand	NOUN
fbem-21457	25	17	.	.	PUNCT
fbem-21457	26	1	changqing	changqe	VERB
fbem-21457	26	2	liu	liu	PROPN
fbem-21457	27	1	[	[	X
fbem-21457	27	2	4	4	NUM
fbem-21457	27	3	]	]	PUNCT
fbem-21457	27	4	used	use	VERB
fbem-21457	27	5	the	the	DET
fbem-21457	27	6	center	center	NOUN
fbem-21457	27	7	of	of	ADP
fbem-21457	27	8	gravity	gravity	NOUN
fbem-21457	27	9	method	method	NOUN
fbem-21457	27	10	to	to	PART
fbem-21457	27	11	construct	construct	VERB
fbem-21457	27	12	a	a	DET
fbem-21457	27	13	site	site	NOUN
fbem-21457	27	14	selection	selection	NOUN
fbem-21457	27	15	model	model	NOUN
fbem-21457	27	16	to	to	PART
fbem-21457	27	17	finally	finally	ADV
fbem-21457	27	18	obtain	obtain	VERB
fbem-21457	27	19	more	more	ADV
fbem-21457	27	20	reasonable	reasonable	ADJ
fbem-21457	27	21	and	and	CCONJ
fbem-21457	27	22	detailed	detailed	ADJ
fbem-21457	27	23	address	address	NOUN
fbem-21457	27	24	coordinates	coordinate	NOUN
fbem-21457	27	25	.	.	PUNCT
fbem-21457	28	1	liu	liu	PROPN
fbem-21457	28	2	322	322	NUM
fbem-21457	28	3	shanqiu	shanqiu	VERB
fbem-21457	28	4	et	et	PROPN
fbem-21457	28	5	al	al	PROPN
fbem-21457	29	1	[	[	X
fbem-21457	29	2	5	5	NUM
fbem-21457	29	3	]	]	PUNCT
fbem-21457	29	4	et	et	PROPN
fbem-21457	29	5	al	al	PROPN
fbem-21457	29	6	.	.	PUNCT
fbem-21457	30	1	in	in	ADP
fbem-21457	30	2	conducting	conduct	VERB
fbem-21457	30	3	the	the	DET
fbem-21457	30	4	site	site	NOUN
fbem-21457	30	5	selection	selection	NOUN
fbem-21457	30	6	study	study	NOUN
fbem-21457	30	7	,	,	PUNCT
fbem-21457	30	8	constructed	construct	VERB
fbem-21457	30	9	an	an	DET
fbem-21457	30	10	objective	objective	ADJ
fbem-21457	30	11	function	function	NOUN
fbem-21457	30	12	containing	contain	VERB
fbem-21457	30	13	a	a	DET
fbem-21457	30	14	variety	variety	NOUN
fbem-21457	30	15	of	of	ADP
fbem-21457	30	16	cost	cost	NOUN
fbem-21457	30	17	elements	element	NOUN
fbem-21457	30	18	and	and	CCONJ
fbem-21457	30	19	established	establish	VERB
fbem-21457	30	20	a	a	DET
fbem-21457	30	21	site	site	NOUN
fbem-21457	30	22	selection	selection	NOUN
fbem-21457	30	23	model	model	NOUN
fbem-21457	30	24	based	base	VERB
fbem-21457	30	25	on	on	ADP
fbem-21457	30	26	the	the	DET
fbem-21457	30	27	combination	combination	NOUN
fbem-21457	30	28	of	of	ADP
fbem-21457	30	29	genetic	genetic	ADJ
fbem-21457	30	30	algorithm	algorithm	NOUN
fbem-21457	30	31	and	and	CCONJ
fbem-21457	30	32	matlab	matlab	PROPN
fbem-21457	30	33	.	.	PUNCT
fbem-21457	31	1	juan	juan	PROPN
fbem-21457	31	2	liu	liu	PROPN
fbem-21457	32	1	[	[	X
fbem-21457	32	2	6	6	NUM
fbem-21457	32	3	]	]	PUNCT
fbem-21457	32	4	et	et	PROPN
fbem-21457	32	5	al	al	PROPN
fbem-21457	32	6	.	.	PROPN
fbem-21457	32	7	used	use	VERB
fbem-21457	32	8	an	an	DET
fbem-21457	32	9	optimized	optimize	VERB
fbem-21457	32	10	bp	bp	PROPN
fbem-21457	32	11	neural	neural	ADJ
fbem-21457	32	12	network	network	NOUN
fbem-21457	32	13	model	model	NOUN
fbem-21457	32	14	to	to	PART
fbem-21457	32	15	learn	learn	VERB
fbem-21457	32	16	the	the	DET
fbem-21457	32	17	distribution	distribution	NOUN
fbem-21457	32	18	center	center	NOUN
fbem-21457	32	19	with	with	ADP
fbem-21457	32	20	perfect	perfect	ADJ
fbem-21457	32	21	data	datum	NOUN
fbem-21457	32	22	and	and	CCONJ
fbem-21457	32	23	selected	select	VERB
fbem-21457	32	24	the	the	DET
fbem-21457	32	25	best	good	ADJ
fbem-21457	32	26	distribution	distribution	NOUN
fbem-21457	32	27	center	center	NOUN
fbem-21457	32	28	site	site	NOUN
fbem-21457	32	29	from	from	ADP
fbem-21457	32	30	both	both	PRON
fbem-21457	32	31	qualitative	qualitative	ADJ
fbem-21457	32	32	and	and	CCONJ
fbem-21457	32	33	quantitative	quantitative	ADJ
fbem-21457	32	34	perspectives	perspective	NOUN
fbem-21457	32	35	.	.	PUNCT
fbem-21457	33	1	xu	xu	PROPN
fbem-21457	33	2	xiaoping	xiaoping	PROPN
fbem-21457	33	3	et	et	PROPN
fbem-21457	33	4	al	al	PROPN
fbem-21457	34	1	[	[	X
fbem-21457	34	2	7	7	NUM
fbem-21457	34	3	]	]	PUNCT
fbem-21457	34	4	introduced	introduce	VERB
fbem-21457	34	5	uncertain	uncertain	ADJ
fbem-21457	34	6	variables	variable	NOUN
fbem-21457	34	7	into	into	ADP
fbem-21457	34	8	the	the	DET
fbem-21457	34	9	basic	basic	ADJ
fbem-21457	34	10	wolfpack	wolfpack	PROPN
fbem-21457	34	11	algorithm	algorithm	NOUN
fbem-21457	34	12	,	,	PUNCT
fbem-21457	34	13	and	and	CCONJ
fbem-21457	34	14	the	the	DET
fbem-21457	34	15	simulation	simulation	NOUN
fbem-21457	34	16	shows	show	VERB
fbem-21457	34	17	that	that	SCONJ
fbem-21457	34	18	the	the	DET
fbem-21457	34	19	proposed	propose	VERB
fbem-21457	34	20	improved	improve	VERB
fbem-21457	34	21	wolfpack	wolfpack	PROPN
fbem-21457	34	22	algorithm	algorithm	NOUN
fbem-21457	34	23	can	can	AUX
fbem-21457	34	24	optimize	optimize	VERB
fbem-21457	34	25	the	the	DET
fbem-21457	34	26	site	site	NOUN
fbem-21457	34	27	selection	selection	NOUN
fbem-21457	34	28	model	model	NOUN
fbem-21457	34	29	.	.	PUNCT
fbem-21457	35	1	the	the	DET
fbem-21457	35	2	problem	problem	NOUN
fbem-21457	35	3	of	of	ADP
fbem-21457	35	4	distribution	distribution	NOUN
fbem-21457	35	5	center	center	NOUN
fbem-21457	35	6	location	location	NOUN
fbem-21457	35	7	is	be	AUX
fbem-21457	35	8	very	very	ADV
fbem-21457	35	9	complicated	complicated	ADJ
fbem-21457	35	10	and	and	CCONJ
fbem-21457	35	11	is	be	AUX
fbem-21457	35	12	affected	affect	VERB
fbem-21457	35	13	by	by	ADP
fbem-21457	35	14	the	the	DET
fbem-21457	35	15	enterprise	enterprise	NOUN
fbem-21457	35	16	's	's	PART
fbem-21457	35	17	own	own	ADJ
fbem-21457	35	18	business	business	NOUN
fbem-21457	35	19	philosophy	philosophy	NOUN
fbem-21457	35	20	and	and	CCONJ
fbem-21457	35	21	business	business	NOUN
fbem-21457	35	22	characteristics	characteristic	NOUN
fbem-21457	35	23	,	,	PUNCT
fbem-21457	35	24	and	and	CCONJ
fbem-21457	35	25	also	also	ADV
fbem-21457	35	26	by	by	ADP
fbem-21457	35	27	the	the	DET
fbem-21457	35	28	overall	overall	ADJ
fbem-21457	35	29	market	market	NOUN
fbem-21457	35	30	demand	demand	NOUN
fbem-21457	35	31	,	,	PUNCT
fbem-21457	35	32	regional	regional	ADJ
fbem-21457	35	33	spatial	spatial	ADJ
fbem-21457	35	34	distribution	distribution	NOUN
fbem-21457	35	35	,	,	PUNCT
fbem-21457	35	36	government	government	NOUN
fbem-21457	35	37	policies	policy	NOUN
fbem-21457	35	38	,	,	PUNCT
fbem-21457	35	39	and	and	CCONJ
fbem-21457	35	40	other	other	ADJ
fbem-21457	35	41	external	external	ADJ
fbem-21457	35	42	environmental	environmental	ADJ
fbem-21457	35	43	factors	factor	NOUN
fbem-21457	35	44	.	.	PUNCT
fbem-21457	36	1	scholars	scholar	NOUN
fbem-21457	36	2	at	at	ADP
fbem-21457	36	3	home	home	ADV
fbem-21457	36	4	and	and	CCONJ
fbem-21457	36	5	abroad	abroad	ADV
fbem-21457	36	6	have	have	AUX
fbem-21457	36	7	conducted	conduct	VERB
fbem-21457	36	8	a	a	DET
fbem-21457	36	9	large	large	ADJ
fbem-21457	36	10	number	number	NOUN
fbem-21457	36	11	of	of	ADP
fbem-21457	36	12	studies	study	NOUN
fbem-21457	36	13	from	from	ADP
fbem-21457	36	14	different	different	ADJ
fbem-21457	36	15	perspectives	perspective	NOUN
fbem-21457	36	16	and	and	CCONJ
fbem-21457	36	17	proposed	propose	VERB
fbem-21457	36	18	different	different	ADJ
fbem-21457	36	19	methods	method	NOUN
fbem-21457	36	20	,	,	PUNCT
fbem-21457	36	21	but	but	CCONJ
fbem-21457	36	22	none	none	NOUN
fbem-21457	36	23	of	of	ADP
fbem-21457	36	24	them	they	PRON
fbem-21457	36	25	is	be	AUX
fbem-21457	36	26	universal	universal	ADJ
fbem-21457	36	27	and	and	CCONJ
fbem-21457	36	28	needs	need	VERB
fbem-21457	36	29	to	to	PART
fbem-21457	36	30	be	be	AUX
fbem-21457	36	31	analyzed	analyze	VERB
fbem-21457	36	32	according	accord	VERB
fbem-21457	36	33	to	to	ADP
fbem-21457	36	34	the	the	DET
fbem-21457	36	35	specific	specific	ADJ
fbem-21457	36	36	situation	situation	NOUN
fbem-21457	36	37	.	.	PUNCT
fbem-21457	37	1	the	the	DET
fbem-21457	37	2	author	author	NOUN
fbem-21457	37	3	believes	believe	VERB
fbem-21457	37	4	that	that	SCONJ
fbem-21457	37	5	in	in	ADP
fbem-21457	37	6	future	future	ADJ
fbem-21457	37	7	research	research	NOUN
fbem-21457	37	8	work	work	NOUN
fbem-21457	37	9	,	,	PUNCT
fbem-21457	37	10	the	the	DET
fbem-21457	37	11	use	use	NOUN
fbem-21457	37	12	of	of	ADP
fbem-21457	37	13	heuristic	heuristic	ADJ
fbem-21457	37	14	algorithms	algorithm	NOUN
fbem-21457	37	15	,	,	PUNCT
fbem-21457	37	16	and	and	CCONJ
fbem-21457	37	17	the	the	DET
fbem-21457	37	18	combination	combination	NOUN
fbem-21457	37	19	of	of	ADP
fbem-21457	37	20	multi	multi	ADJ
fbem-21457	37	21	-	-	ADJ
fbem-21457	37	22	criteria	criterion	NOUN
fbem-21457	37	23	decisionmaking	decisionmake	VERB
fbem-21457	37	24	methods	method	NOUN
fbem-21457	37	25	and	and	CCONJ
fbem-21457	37	26	simulation	simulation	NOUN
fbem-21457	37	27	methods	method	NOUN
fbem-21457	37	28	is	be	AUX
fbem-21457	37	29	the	the	DET
fbem-21457	37	30	general	general	ADJ
fbem-21457	37	31	trend	trend	NOUN
fbem-21457	37	32	.	.	PUNCT
fbem-21457	38	1	the	the	DET
fbem-21457	38	2	comprehensive	comprehensive	ADJ
fbem-21457	38	3	use	use	NOUN
fbem-21457	38	4	of	of	ADP
fbem-21457	38	5	a	a	DET
fbem-21457	38	6	variety	variety	NOUN
fbem-21457	38	7	of	of	ADP
fbem-21457	38	8	means	mean	NOUN
fbem-21457	38	9	can	can	AUX
fbem-21457	38	10	be	be	AUX
fbem-21457	38	11	realized	realize	VERB
fbem-21457	38	12	to	to	PART
fbem-21457	38	13	learn	learn	VERB
fbem-21457	38	14	from	from	ADP
fbem-21457	38	15	each	each	DET
fbem-21457	38	16	other	other	ADJ
fbem-21457	38	17	,	,	PUNCT
fbem-21457	38	18	thus	thus	ADV
fbem-21457	38	19	improving	improve	VERB
fbem-21457	38	20	the	the	DET
fbem-21457	38	21	accuracy	accuracy	NOUN
fbem-21457	38	22	and	and	CCONJ
fbem-21457	38	23	reliability	reliability	NOUN
fbem-21457	38	24	of	of	ADP
fbem-21457	38	25	site	site	NOUN
fbem-21457	38	26	selection	selection	NOUN
fbem-21457	38	27	.	.	PUNCT
fbem-21457	39	1	3.2	3.2	NUM
fbem-21457	39	2	.	.	PUNCT
fbem-21457	40	1	research	research	NOUN
fbem-21457	40	2	review	review	NOUN
fbem-21457	40	3	on	on	ADP
fbem-21457	40	4	the	the	DET
fbem-21457	40	5	direction	direction	NOUN
fbem-21457	40	6	of	of	ADP
fbem-21457	40	7	distribution	distribution	NOUN
fbem-21457	40	8	center	center	NOUN
fbem-21457	40	9	site	site	NOUN
fbem-21457	40	10	selection	selection	NOUN
fbem-21457	40	11	researchers	researcher	NOUN
fbem-21457	40	12	at	at	ADP
fbem-21457	40	13	home	home	ADV
fbem-21457	40	14	and	and	CCONJ
fbem-21457	40	15	abroad	abroad	ADV
fbem-21457	40	16	have	have	AUX
fbem-21457	40	17	conducted	conduct	VERB
fbem-21457	40	18	detailed	detailed	ADJ
fbem-21457	40	19	studies	study	NOUN
fbem-21457	40	20	on	on	ADP
fbem-21457	40	21	the	the	DET
fbem-21457	40	22	positioning	positioning	NOUN
fbem-21457	40	23	of	of	ADP
fbem-21457	40	24	different	different	ADJ
fbem-21457	40	25	main	main	ADJ
fbem-21457	40	26	products	product	NOUN
fbem-21457	40	27	in	in	ADP
fbem-21457	40	28	distribution	distribution	NOUN
fbem-21457	40	29	centers	center	NOUN
fbem-21457	40	30	,	,	PUNCT
fbem-21457	40	31	and	and	CCONJ
fbem-21457	40	32	the	the	DET
fbem-21457	40	33	harvest	harvest	NOUN
fbem-21457	40	34	is	be	AUX
fbem-21457	40	35	quite	quite	ADV
fbem-21457	40	36	fruitful	fruitful	ADJ
fbem-21457	40	37	.	.	PUNCT
fbem-21457	41	1	di	di	PROPN
fbem-21457	41	2	weimin	weimin	PROPN
fbem-21457	41	3	[	[	X
fbem-21457	41	4	8	8	NUM
fbem-21457	41	5	]	]	PUNCT
fbem-21457	41	6	et	et	PROPN
fbem-21457	41	7	al	al	PROPN
fbem-21457	41	8	.	.	PROPN
fbem-21457	41	9	took	take	VERB
fbem-21457	41	10	into	into	ADP
fbem-21457	41	11	account	account	NOUN
fbem-21457	41	12	the	the	DET
fbem-21457	41	13	perishable	perishable	ADJ
fbem-21457	41	14	characteristics	characteristic	NOUN
fbem-21457	41	15	of	of	ADP
fbem-21457	41	16	agricultural	agricultural	ADJ
fbem-21457	41	17	products	product	NOUN
fbem-21457	41	18	,	,	PUNCT
fbem-21457	41	19	combined	combine	VERB
fbem-21457	41	20	with	with	ADP
fbem-21457	41	21	a	a	DET
fbem-21457	41	22	hybrid	hybrid	ADJ
fbem-21457	41	23	genetic	genetic	ADJ
fbem-21457	41	24	algorithm	algorithm	NOUN
fbem-21457	41	25	to	to	PART
fbem-21457	41	26	construct	construct	VERB
fbem-21457	41	27	a	a	DET
fbem-21457	41	28	perishable	perishable	ADJ
fbem-21457	41	29	agricultural	agricultural	ADJ
fbem-21457	41	30	product	product	NOUN
fbem-21457	41	31	siting	siting	NOUN
fbem-21457	41	32	model	model	NOUN
fbem-21457	41	33	with	with	ADP
fbem-21457	41	34	limited	limited	ADJ
fbem-21457	41	35	distribution	distribution	NOUN
fbem-21457	41	36	capacity	capacity	NOUN
fbem-21457	41	37	.	.	PUNCT
fbem-21457	42	1	yuan	yuan	PROPN
fbem-21457	42	2	qun	qun	PROPN
fbem-21457	42	3	et	et	PROPN
fbem-21457	42	4	al	al	PROPN
fbem-21457	43	1	[	[	X
fbem-21457	43	2	9	9	NUM
fbem-21457	43	3	]	]	PUNCT
fbem-21457	43	4	constructed	construct	VERB
fbem-21457	43	5	an	an	DET
fbem-21457	43	6	optimization	optimization	NOUN
fbem-21457	43	7	model	model	NOUN
fbem-21457	43	8	for	for	ADP
fbem-21457	43	9	the	the	DET
fbem-21457	43	10	location	location	NOUN
fbem-21457	43	11	of	of	ADP
fbem-21457	43	12	cold	cold	ADJ
fbem-21457	43	13	chain	chain	NOUN
fbem-21457	43	14	logistics	logistic	NOUN
fbem-21457	43	15	distribution	distribution	NOUN
fbem-21457	43	16	centers	center	NOUN
fbem-21457	43	17	by	by	ADP
fbem-21457	43	18	considering	consider	VERB
fbem-21457	43	19	the	the	DET
fbem-21457	43	20	cost	cost	NOUN
fbem-21457	43	21	,	,	PUNCT
fbem-21457	43	22	time	time	NOUN
fbem-21457	43	23	window	window	NOUN
fbem-21457	43	24	constraints	constraint	NOUN
fbem-21457	43	25	,	,	PUNCT
fbem-21457	43	26	cargo	cargo	NOUN
fbem-21457	43	27	loss	loss	NOUN
fbem-21457	43	28	rate	rate	NOUN
fbem-21457	43	29	,	,	PUNCT
fbem-21457	43	30	and	and	CCONJ
fbem-21457	43	31	other	other	ADJ
fbem-21457	43	32	factors	factor	NOUN
fbem-21457	43	33	,	,	PUNCT
fbem-21457	43	34	and	and	CCONJ
fbem-21457	43	35	designed	design	VERB
fbem-21457	43	36	a	a	DET
fbem-21457	43	37	hybrid	hybrid	ADJ
fbem-21457	43	38	genetic	genetic	ADJ
fbem-21457	43	39	algorithm	algorithm	NOUN
fbem-21457	43	40	model	model	NOUN
fbem-21457	43	41	.	.	PUNCT
fbem-21457	44	1	wang	wang	PROPN
fbem-21457	44	2	haoxiang	haoxiang	PROPN
fbem-21457	44	3	et	et	PROPN
fbem-21457	44	4	al	al	PROPN
fbem-21457	45	1	[	[	X
fbem-21457	45	2	10	10	NUM
fbem-21457	45	3	]	]	PUNCT
fbem-21457	45	4	explored	explore	VERB
fbem-21457	45	5	the	the	DET
fbem-21457	45	6	elements	element	NOUN
fbem-21457	45	7	constituting	constitute	VERB
fbem-21457	45	8	the	the	DET
fbem-21457	45	9	cost	cost	NOUN
fbem-21457	45	10	in	in	ADP
fbem-21457	45	11	-	-	PUNCT
fbem-21457	45	12	depth	depth	NOUN
fbem-21457	45	13	and	and	CCONJ
fbem-21457	45	14	constructed	construct	VERB
fbem-21457	45	15	a	a	DET
fbem-21457	45	16	two	two	NUM
fbem-21457	45	17	-	-	PUNCT
fbem-21457	45	18	layer	layer	NOUN
fbem-21457	45	19	cost	cost	NOUN
fbem-21457	45	20	model	model	NOUN
fbem-21457	45	21	about	about	ADP
fbem-21457	45	22	the	the	DET
fbem-21457	45	23	site	site	NOUN
fbem-21457	45	24	selection	selection	NOUN
fbem-21457	45	25	of	of	ADP
fbem-21457	45	26	cold	cold	ADJ
fbem-21457	45	27	chain	chain	NOUN
fbem-21457	45	28	logistics	logistic	NOUN
fbem-21457	45	29	centers	center	NOUN
fbem-21457	45	30	for	for	ADP
fbem-21457	45	31	pharmaceuticals	pharmaceutical	NOUN
fbem-21457	45	32	.	.	PUNCT
fbem-21457	46	1	ioannis	ioannis	PROPN
fbem-21457	46	2	giannikos	giannikos	ADJ
fbem-21457	47	1	[	[	X
fbem-21457	47	2	11	11	NUM
fbem-21457	47	3	]	]	PUNCT
fbem-21457	47	4	established	establish	VERB
fbem-21457	47	5	a	a	DET
fbem-21457	47	6	multi	multi	ADJ
fbem-21457	47	7	-	-	ADJ
fbem-21457	47	8	objective	objective	ADJ
fbem-21457	47	9	planning	planning	NOUN
fbem-21457	47	10	model	model	NOUN
fbem-21457	47	11	for	for	ADP
fbem-21457	47	12	the	the	DET
fbem-21457	47	13	site	site	NOUN
fbem-21457	47	14	selection	selection	NOUN
fbem-21457	47	15	and	and	CCONJ
fbem-21457	47	16	transportation	transportation	NOUN
fbem-21457	47	17	of	of	ADP
fbem-21457	47	18	hazardous	hazardous	ADJ
fbem-21457	47	19	materials	material	NOUN
fbem-21457	47	20	based	base	VERB
fbem-21457	47	21	on	on	ADP
fbem-21457	47	22	the	the	DET
fbem-21457	47	23	total	total	ADJ
fbem-21457	47	24	cost	cost	NOUN
fbem-21457	47	25	,	,	PUNCT
fbem-21457	47	26	risk	risk	NOUN
fbem-21457	47	27	,	,	PUNCT
fbem-21457	47	28	and	and	CCONJ
fbem-21457	47	29	fairness	fairness	NOUN
fbem-21457	47	30	of	of	ADP
fbem-21457	47	31	risk	risk	NOUN
fbem-21457	47	32	-	-	PUNCT
fbem-21457	47	33	taking	taking	NOUN
fbem-21457	47	34	in	in	ADP
fbem-21457	47	35	the	the	DET
fbem-21457	47	36	site	site	NOUN
fbem-21457	47	37	selection	selection	NOUN
fbem-21457	47	38	and	and	CCONJ
fbem-21457	47	39	transportation	transportation	NOUN
fbem-21457	47	40	.	.	PUNCT
fbem-21457	48	1	establishing	establish	VERB
fbem-21457	48	2	a	a	DET
fbem-21457	48	3	siting	siting	NOUN
fbem-21457	48	4	method	method	NOUN
fbem-21457	48	5	based	base	VERB
fbem-21457	48	6	on	on	ADP
fbem-21457	48	7	different	different	ADJ
fbem-21457	48	8	attributes	attribute	NOUN
fbem-21457	48	9	of	of	ADP
fbem-21457	48	10	distribution	distribution	NOUN
fbem-21457	48	11	centers	center	NOUN
fbem-21457	48	12	is	be	AUX
fbem-21457	48	13	very	very	ADV
fbem-21457	48	14	relevant	relevant	ADJ
fbem-21457	48	15	and	and	CCONJ
fbem-21457	48	16	can	can	AUX
fbem-21457	48	17	improve	improve	VERB
fbem-21457	48	18	the	the	DET
fbem-21457	48	19	science	science	NOUN
fbem-21457	48	20	and	and	CCONJ
fbem-21457	48	21	feasibility	feasibility	NOUN
fbem-21457	48	22	of	of	ADP
fbem-21457	48	23	the	the	DET
fbem-21457	48	24	siting	siting	NOUN
fbem-21457	48	25	plan	plan	NOUN
fbem-21457	48	26	.	.	PUNCT
fbem-21457	49	1	combined	combine	VERB
fbem-21457	49	2	with	with	ADP
fbem-21457	49	3	the	the	DET
fbem-21457	49	4	different	different	ADJ
fbem-21457	49	5	main	main	ADJ
fbem-21457	49	6	products	product	NOUN
fbem-21457	49	7	of	of	ADP
fbem-21457	49	8	the	the	DET
fbem-21457	49	9	distribution	distribution	NOUN
fbem-21457	49	10	center	center	NOUN
fbem-21457	49	11	,	,	PUNCT
fbem-21457	49	12	comprehensive	comprehensive	ADJ
fbem-21457	49	13	and	and	CCONJ
fbem-21457	49	14	meticulous	meticulous	ADJ
fbem-21457	49	15	all	all	ADV
fbem-21457	49	16	-	-	PUNCT
fbem-21457	49	17	around	around	ADJ
fbem-21457	49	18	site	site	NOUN
fbem-21457	49	19	selection	selection	NOUN
fbem-21457	49	20	consideration	consideration	NOUN
fbem-21457	49	21	,	,	PUNCT
fbem-21457	49	22	is	be	AUX
fbem-21457	49	23	not	not	PART
fbem-21457	49	24	only	only	ADV
fbem-21457	49	25	conducive	conducive	ADJ
fbem-21457	49	26	to	to	ADP
fbem-21457	49	27	the	the	DET
fbem-21457	49	28	improvement	improvement	NOUN
fbem-21457	49	29	of	of	ADP
fbem-21457	49	30	the	the	DET
fbem-21457	49	31	site	site	NOUN
fbem-21457	49	32	selection	selection	NOUN
fbem-21457	49	33	problem	problem	NOUN
fbem-21457	49	34	but	but	CCONJ
fbem-21457	49	35	also	also	ADV
fbem-21457	49	36	conducive	conducive	ADJ
fbem-21457	49	37	to	to	ADP
fbem-21457	49	38	a	a	DET
fbem-21457	49	39	more	more	ADV
fbem-21457	49	40	indepth	indepth	ADJ
fbem-21457	49	41	study	study	NOUN
fbem-21457	49	42	of	of	ADP
fbem-21457	49	43	the	the	DET
fbem-21457	49	44	field	field	NOUN
fbem-21457	49	45	.	.	PUNCT
fbem-21457	50	1	4	4	X
fbem-21457	50	2	.	.	X
fbem-21457	50	3	visual	visual	ADJ
fbem-21457	50	4	analysis	analysis	NOUN
fbem-21457	50	5	of	of	ADP
fbem-21457	50	6	logistics	logistic	NOUN
fbem-21457	50	7	distribution	distribution	NOUN
fbem-21457	50	8	center	center	NOUN
fbem-21457	50	9	location	location	NOUN
fbem-21457	50	10	research	research	NOUN
fbem-21457	50	11	4.1	4.1	NUM
fbem-21457	50	12	.	.	PUNCT
fbem-21457	51	1	analysis	analysis	NOUN
fbem-21457	51	2	of	of	ADP
fbem-21457	51	3	the	the	DET
fbem-21457	51	4	amount	amount	NOUN
fbem-21457	51	5	of	of	ADP
fbem-21457	51	6	literature	literature	NOUN
fbem-21457	51	7	issued	issue	VERB
fbem-21457	51	8	the	the	DET
fbem-21457	51	9	amount	amount	NOUN
fbem-21457	51	10	of	of	ADP
fbem-21457	51	11	literature	literature	NOUN
fbem-21457	51	12	issued	issue	VERB
fbem-21457	51	13	indicates	indicate	VERB
fbem-21457	51	14	that	that	SCONJ
fbem-21457	51	15	the	the	DET
fbem-21457	51	16	research	research	NOUN
fbem-21457	51	17	topic	topic	NOUN
fbem-21457	51	18	in	in	ADP
fbem-21457	51	19	the	the	DET
fbem-21457	51	20	year	year	NOUN
fbem-21457	51	21	research	research	NOUN
fbem-21457	51	22	heat	heat	NOUN
fbem-21457	51	23	and	and	CCONJ
fbem-21457	51	24	attention	attention	NOUN
fbem-21457	51	25	degree	degree	NOUN
fbem-21457	51	26	,	,	PUNCT
fbem-21457	51	27	the	the	PRON
fbem-21457	51	28	more	more	ADJ
fbem-21457	51	29	the	the	DET
fbem-21457	51	30	literature	literature	NOUN
fbem-21457	51	31	,	,	PUNCT
fbem-21457	51	32	the	the	PRON
fbem-21457	51	33	more	more	ADV
fbem-21457	51	34	active	active	ADJ
fbem-21457	51	35	the	the	DET
fbem-21457	51	36	academic	academic	ADJ
fbem-21457	51	37	community	community	NOUN
fbem-21457	51	38	about	about	ADP
fbem-21457	51	39	the	the	DET
fbem-21457	51	40	research	research	NOUN
fbem-21457	51	41	.	.	PUNCT
fbem-21457	52	1	according	accord	VERB
fbem-21457	52	2	to	to	ADP
fbem-21457	52	3	the	the	DET
fbem-21457	52	4	literature	literature	NOUN
fbem-21457	52	5	data	data	PROPN
fbem-21457	52	6	,	,	PUNCT
fbem-21457	52	7	the	the	DET
fbem-21457	52	8	literature	literature	NOUN
fbem-21457	52	9	distribution	distribution	NOUN
fbem-21457	52	10	map	map	NOUN
fbem-21457	52	11	is	be	AUX
fbem-21457	52	12	drawn	draw	VERB
fbem-21457	52	13	,	,	PUNCT
fbem-21457	52	14	and	and	CCONJ
fbem-21457	52	15	the	the	DET
fbem-21457	52	16	specific	specific	ADJ
fbem-21457	52	17	situation	situation	NOUN
fbem-21457	52	18	is	be	AUX
fbem-21457	52	19	shown	show	VERB
fbem-21457	52	20	in	in	ADP
fbem-21457	52	21	figure	figure	NOUN
fbem-21457	52	22	1	1	NUM
fbem-21457	52	23	figure	figure	NOUN
fbem-21457	52	24	1	1	NUM
fbem-21457	52	25	.	.	PUNCT
fbem-21457	53	1	distribution	distribution	NOUN
fbem-21457	53	2	of	of	ADP
fbem-21457	53	3	distribution	distribution	NOUN
fbem-21457	53	4	center	center	NOUN
fbem-21457	53	5	siting	siting	NOUN
fbem-21457	53	6	research	research	NOUN
fbem-21457	53	7	literature	literature	NOUN
fbem-21457	53	8	,	,	PUNCT
fbem-21457	53	9	1998	1998	NUM
fbem-21457	53	10	-	-	SYM
fbem-21457	53	11	2023	2023	NUM
fbem-21457	53	12	as	as	SCONJ
fbem-21457	53	13	can	can	AUX
fbem-21457	53	14	be	be	AUX
fbem-21457	53	15	seen	see	VERB
fbem-21457	53	16	from	from	ADP
fbem-21457	53	17	figure	figure	NOUN
fbem-21457	53	18	1	1	NUM
fbem-21457	53	19	,	,	PUNCT
fbem-21457	53	20	the	the	DET
fbem-21457	53	21	domestic	domestic	ADJ
fbem-21457	53	22	research	research	NOUN
fbem-21457	53	23	in	in	ADP
fbem-21457	53	24	the	the	DET
fbem-21457	53	25	field	field	NOUN
fbem-21457	53	26	of	of	ADP
fbem-21457	53	27	logistics	logistic	NOUN
fbem-21457	53	28	and	and	CCONJ
fbem-21457	53	29	distribution	distribution	NOUN
fbem-21457	53	30	site	site	NOUN
fbem-21457	53	31	selection	selection	NOUN
fbem-21457	53	32	started	start	VERB
fbem-21457	53	33	in	in	ADP
fbem-21457	53	34	1998	1998	NUM
fbem-21457	53	35	and	and	CCONJ
fbem-21457	53	36	then	then	ADV
fbem-21457	53	37	showed	show	VERB
fbem-21457	53	38	an	an	DET
fbem-21457	53	39	upward	upward	ADJ
fbem-21457	53	40	trend	trend	NOUN
fbem-21457	53	41	until	until	ADP
fbem-21457	53	42	2013	2013	NUM
fbem-21457	53	43	when	when	SCONJ
fbem-21457	53	44	it	it	PRON
fbem-21457	53	45	reached	reach	VERB
fbem-21457	53	46	a	a	DET
fbem-21457	53	47	maximum	maximum	NOUN
fbem-21457	53	48	of	of	ADP
fbem-21457	53	49	46	46	NUM
fbem-21457	53	50	articles	article	NOUN
fbem-21457	53	51	,	,	PUNCT
fbem-21457	53	52	and	and	CCONJ
fbem-21457	53	53	then	then	ADV
fbem-21457	53	54	began	begin	VERB
fbem-21457	53	55	to	to	PART
fbem-21457	53	56	show	show	VERB
fbem-21457	53	57	a	a	DET
fbem-21457	53	58	downward	downward	ADJ
fbem-21457	53	59	trend	trend	NOUN
fbem-21457	53	60	.	.	PUNCT
fbem-21457	54	1	at	at	ADP
fbem-21457	54	2	the	the	DET
fbem-21457	54	3	beginning	beginning	NOUN
fbem-21457	54	4	of	of	ADP
fbem-21457	54	5	the	the	DET
fbem-21457	54	6	twentieth	twentieth	ADJ
fbem-21457	54	7	century	century	NOUN
fbem-21457	54	8	,	,	PUNCT
fbem-21457	54	9	the	the	DET
fbem-21457	54	10	state	state	NOUN
fbem-21457	54	11	fully	fully	ADV
fbem-21457	54	12	encourages	encourage	VERB
fbem-21457	54	13	domestic	domestic	ADJ
fbem-21457	54	14	and	and	CCONJ
fbem-21457	54	15	foreign	foreign	ADJ
fbem-21457	54	16	manufacturers	manufacturer	NOUN
fbem-21457	54	17	to	to	PART
fbem-21457	54	18	jointly	jointly	ADV
fbem-21457	54	19	invest	invest	VERB
fbem-21457	54	20	in	in	ADP
fbem-21457	54	21	the	the	DET
fbem-21457	54	22	construction	construction	NOUN
fbem-21457	54	23	of	of	ADP
fbem-21457	54	24	logistics	logistic	NOUN
fbem-21457	54	25	enterprise	enterprise	NOUN
fbem-21457	54	26	infrastructure	infrastructure	NOUN
fbem-21457	54	27	and	and	CCONJ
fbem-21457	54	28	to	to	PART
fbem-21457	54	29	improve	improve	VERB
fbem-21457	54	30	the	the	DET
fbem-21457	54	31	logistics	logistic	NOUN
fbem-21457	54	32	and	and	CCONJ
fbem-21457	54	33	distribution	distribution	NOUN
fbem-21457	54	34	facilities	facility	NOUN
fbem-21457	54	35	.	.	PUNCT
fbem-21457	55	1	in	in	ADP
fbem-21457	55	2	this	this	DET
fbem-21457	55	3	context	context	NOUN
fbem-21457	55	4	,	,	PUNCT
fbem-21457	55	5	experts	expert	NOUN
fbem-21457	55	6	and	and	CCONJ
fbem-21457	55	7	scholars	scholar	NOUN
fbem-21457	55	8	have	have	AUX
fbem-21457	55	9	invested	invest	VERB
fbem-21457	55	10	in	in	ADP
fbem-21457	55	11	the	the	DET
fbem-21457	55	12	study	study	NOUN
fbem-21457	55	13	of	of	ADP
fbem-21457	55	14	distribution	distribution	NOUN
fbem-21457	55	15	center	center	NOUN
fbem-21457	55	16	siting	siting	NOUN
fbem-21457	55	17	problems	problem	NOUN
fbem-21457	55	18	.	.	PUNCT
fbem-21457	56	1	foreign	foreign	ADJ
fbem-21457	56	2	research	research	NOUN
fbem-21457	56	3	on	on	ADP
fbem-21457	56	4	the	the	DET
fbem-21457	56	5	location	location	NOUN
fbem-21457	56	6	of	of	ADP
fbem-21457	56	7	distribution	distribution	NOUN
fbem-21457	56	8	centers	center	NOUN
fbem-21457	56	9	first	first	ADV
fbem-21457	56	10	began	begin	VERB
fbem-21457	56	11	in	in	ADP
fbem-21457	56	12	the	the	DET
fbem-21457	56	13	early	early	ADJ
fbem-21457	56	14	1960s	1960	NOUN
fbem-21457	56	15	,	,	PUNCT
fbem-21457	56	16	compared	compare	VERB
fbem-21457	56	17	with	with	ADP
fbem-21457	56	18	foreign	foreign	ADJ
fbem-21457	56	19	countries	country	NOUN
fbem-21457	56	20	,	,	PUNCT
fbem-21457	56	21	china	china	PROPN
fbem-21457	56	22	's	's	PART
fbem-21457	56	23	research	research	NOUN
fbem-21457	56	24	in	in	ADP
fbem-21457	56	25	this	this	DET
fbem-21457	56	26	field	field	NOUN
fbem-21457	56	27	started	start	VERB
fbem-21457	56	28	late	late	ADV
fbem-21457	56	29	,	,	PUNCT
fbem-21457	56	30	and	and	CCONJ
fbem-21457	56	31	the	the	DET
fbem-21457	56	32	initial	initial	ADJ
fbem-21457	56	33	progress	progress	NOUN
fbem-21457	56	34	was	be	AUX
fbem-21457	56	35	slow	slow	ADJ
fbem-21457	56	36	.	.	PUNCT
fbem-21457	57	1	4.2	4.2	NUM
fbem-21457	57	2	.	.	PUNCT
fbem-21457	58	1	analysis	analysis	NOUN
fbem-21457	58	2	of	of	ADP
fbem-21457	58	3	core	core	ADJ
fbem-21457	58	4	research	research	NOUN
fbem-21457	58	5	authors	author	NOUN
fbem-21457	58	6	and	and	CCONJ
fbem-21457	58	7	institutions	institution	NOUN
fbem-21457	58	8	compared	compare	VERB
fbem-21457	58	9	with	with	ADP
fbem-21457	58	10	other	other	ADJ
fbem-21457	58	11	non	non	ADJ
fbem-21457	58	12	-	-	ADJ
fbem-21457	58	13	core	core	ADJ
fbem-21457	58	14	research	research	NOUN
fbem-21457	58	15	,	,	PUNCT
fbem-21457	58	16	core	core	NOUN
fbem-21457	58	17	authors	author	NOUN
fbem-21457	58	18	and	and	CCONJ
fbem-21457	58	19	institutions	institution	NOUN
fbem-21457	58	20	are	be	AUX
fbem-21457	58	21	more	more	ADV
fbem-21457	58	22	adept	adept	ADJ
fbem-21457	58	23	at	at	ADP
fbem-21457	58	24	grasping	grasp	VERB
fbem-21457	58	25	the	the	DET
fbem-21457	58	26	research	research	NOUN
fbem-21457	58	27	trends	trend	NOUN
fbem-21457	58	28	,	,	PUNCT
fbem-21457	58	29	hotspots	hotspot	NOUN
fbem-21457	58	30	,	,	PUNCT
fbem-21457	58	31	and	and	CCONJ
fbem-21457	58	32	directions	direction	NOUN
fbem-21457	58	33	in	in	ADP
fbem-21457	58	34	this	this	DET
fbem-21457	58	35	field	field	NOUN
fbem-21457	58	36	.	.	PUNCT
fbem-21457	59	1	this	this	DET
fbem-21457	59	2	paper	paper	NOUN
fbem-21457	59	3	uses	use	VERB
fbem-21457	59	4	the	the	DET
fbem-21457	59	5	cluster	cluster	NOUN
fbem-21457	59	6	analysis	analysis	NOUN
fbem-21457	59	7	function	function	NOUN
fbem-21457	59	8	of	of	ADP
fbem-21457	59	9	citespace	citespace	NOUN
fbem-21457	59	10	to	to	PART
fbem-21457	59	11	jointly	jointly	ADV
fbem-21457	59	12	analyze	analyze	VERB
fbem-21457	59	13	the	the	DET
fbem-21457	59	14	authors	author	NOUN
fbem-21457	59	15	and	and	CCONJ
fbem-21457	59	16	institutions	institution	NOUN
fbem-21457	59	17	in	in	ADP
fbem-21457	59	18	the	the	DET
fbem-21457	59	19	field	field	NOUN
fbem-21457	59	20	of	of	ADP
fbem-21457	59	21	distribution	distribution	NOUN
fbem-21457	59	22	center	center	NOUN
fbem-21457	59	23	siting	siting	NOUN
fbem-21457	59	24	research	research	NOUN
fbem-21457	59	25	,	,	PUNCT
fbem-21457	59	26	setting	set	VERB
fbem-21457	59	27	the	the	DET
fbem-21457	59	28	time	time	NOUN
fbem-21457	59	29	slice	slice	NOUN
fbem-21457	59	30	as	as	ADP
fbem-21457	59	31	"	"	PUNCT
fbem-21457	59	32	8	8	NUM
fbem-21457	59	33	years	year	NOUN
fbem-21457	59	34	"	"	PUNCT
fbem-21457	59	35	,	,	PUNCT
fbem-21457	59	36	as	as	SCONJ
fbem-21457	59	37	shown	show	VERB
fbem-21457	59	38	in	in	ADP
fbem-21457	59	39	figure	figure	NOUN
fbem-21457	59	40	2	2	NUM
fbem-21457	59	41	.	.	PUNCT
fbem-21457	59	42	figure	figure	NOUN
fbem-21457	59	43	2	2	NUM
fbem-21457	59	44	.	.	PUNCT
fbem-21457	59	45	visual	visual	ADJ
fbem-21457	59	46	analytics	analytic	NOUN
fbem-21457	59	47	map	map	NOUN
fbem-21457	59	48	of	of	ADP
fbem-21457	59	49	core	core	NOUN
fbem-21457	59	50	study	study	NOUN
fbem-21457	59	51	authors	author	NOUN
fbem-21457	59	52	and	and	CCONJ
fbem-21457	59	53	institutions	institution	NOUN
fbem-21457	59	54	0	0	NUM
fbem-21457	60	1	5	5	NUM
fbem-21457	60	2	10	10	NUM
fbem-21457	60	3	15	15	NUM
fbem-21457	60	4	20	20	NUM
fbem-21457	60	5	25	25	NUM
fbem-21457	60	6	30	30	NUM
fbem-21457	60	7	35	35	NUM
fbem-21457	60	8	40	40	NUM
fbem-21457	60	9	45	45	NUM
fbem-21457	60	10	50	50	NUM
fbem-21457	60	11	19	19	NUM
fbem-21457	60	12	98	98	NUM
fbem-21457	60	13	20	20	NUM
fbem-21457	60	14	00	00	NUM
fbem-21457	60	15	20	20	NUM
fbem-21457	60	16	02	02	NUM
fbem-21457	60	17	20	20	NUM
fbem-21457	60	18	04	04	NUM
fbem-21457	60	19	20	20	NUM
fbem-21457	60	20	06	06	NUM
fbem-21457	60	21	20	20	NUM
fbem-21457	60	22	08	08	NUM
fbem-21457	60	23	20	20	NUM
fbem-21457	60	24	10	10	NUM
fbem-21457	60	25	20	20	NUM
fbem-21457	60	26	12	12	NUM
fbem-21457	60	27	20	20	NUM
fbem-21457	60	28	14	14	NUM
fbem-21457	60	29	20	20	NUM
fbem-21457	60	30	16	16	NUM
fbem-21457	60	31	20	20	NUM
fbem-21457	60	32	18	18	NUM
fbem-21457	60	33	20	20	NUM
fbem-21457	60	34	20	20	NUM
fbem-21457	60	35	20	20	NUM
fbem-21457	60	36	22	22	NUM
fbem-21457	60	37	323	323	NUM
fbem-21457	60	38	a	a	DET
fbem-21457	60	39	total	total	NOUN
fbem-21457	60	40	of	of	ADP
fbem-21457	60	41	195	195	NUM
fbem-21457	60	42	nodes	node	NOUN
fbem-21457	60	43	and	and	CCONJ
fbem-21457	60	44	227	227	NUM
fbem-21457	60	45	connecting	connect	VERB
fbem-21457	60	46	lines	line	NOUN
fbem-21457	60	47	were	be	AUX
fbem-21457	60	48	obtained	obtain	VERB
fbem-21457	60	49	,	,	PUNCT
fbem-21457	60	50	with	with	ADP
fbem-21457	60	51	a	a	DET
fbem-21457	60	52	density	density	NOUN
fbem-21457	60	53	of	of	ADP
fbem-21457	60	54	0.012	0.012	NUM
fbem-21457	60	55	.	.	PUNCT
fbem-21457	61	1	therefore	therefore	ADV
fbem-21457	61	2	,	,	PUNCT
fbem-21457	61	3	it	it	PRON
fbem-21457	61	4	can	can	AUX
fbem-21457	61	5	be	be	AUX
fbem-21457	61	6	seen	see	VERB
fbem-21457	61	7	that	that	SCONJ
fbem-21457	61	8	the	the	DET
fbem-21457	61	9	co	co	NOUN
fbem-21457	61	10	-	-	NOUN
fbem-21457	61	11	occurrence	occurrence	ADJ
fbem-21457	61	12	network	network	NOUN
fbem-21457	61	13	density	density	NOUN
fbem-21457	61	14	of	of	ADP
fbem-21457	61	15	nodes	node	NOUN
fbem-21457	61	16	between	between	ADP
fbem-21457	61	17	authors	author	NOUN
fbem-21457	61	18	and	and	CCONJ
fbem-21457	61	19	institutions	institution	NOUN
fbem-21457	61	20	in	in	ADP
fbem-21457	61	21	this	this	DET
fbem-21457	61	22	field	field	NOUN
fbem-21457	61	23	is	be	AUX
fbem-21457	61	24	higher	high	ADJ
fbem-21457	61	25	,	,	PUNCT
fbem-21457	61	26	the	the	DET
fbem-21457	61	27	cooperation	cooperation	NOUN
fbem-21457	61	28	relationship	relationship	NOUN
fbem-21457	61	29	between	between	ADP
fbem-21457	61	30	authors	author	NOUN
fbem-21457	61	31	or	or	CCONJ
fbem-21457	61	32	institutions	institution	NOUN
fbem-21457	61	33	is	be	AUX
fbem-21457	61	34	closer	close	ADJ
fbem-21457	61	35	,	,	PUNCT
fbem-21457	61	36	and	and	CCONJ
fbem-21457	61	37	a	a	DET
fbem-21457	61	38	certain	certain	ADJ
fbem-21457	61	39	scale	scale	NOUN
fbem-21457	61	40	of	of	ADP
fbem-21457	61	41	cooperation	cooperation	NOUN
fbem-21457	61	42	team	team	NOUN
fbem-21457	61	43	has	have	AUX
fbem-21457	61	44	been	be	AUX
fbem-21457	61	45	formed	form	VERB
fbem-21457	61	46	and	and	CCONJ
fbem-21457	61	47	has	have	VERB
fbem-21457	61	48	a	a	DET
fbem-21457	61	49	greater	great	ADJ
fbem-21457	61	50	influence	influence	NOUN
fbem-21457	61	51	in	in	ADP
fbem-21457	61	52	the	the	DET
fbem-21457	61	53	field	field	NOUN
fbem-21457	61	54	.	.	PUNCT
fbem-21457	62	1	in	in	ADP
fbem-21457	62	2	terms	term	NOUN
fbem-21457	62	3	of	of	ADP
fbem-21457	62	4	the	the	DET
fbem-21457	62	5	size	size	NOUN
fbem-21457	62	6	of	of	ADP
fbem-21457	62	7	the	the	DET
fbem-21457	62	8	cooperative	cooperative	ADJ
fbem-21457	62	9	network	network	NOUN
fbem-21457	62	10	,	,	PUNCT
fbem-21457	62	11	the	the	DET
fbem-21457	62	12	largest	large	ADJ
fbem-21457	62	13	cooperative	cooperative	ADJ
fbem-21457	62	14	network	network	NOUN
fbem-21457	62	15	is	be	AUX
fbem-21457	62	16	formed	form	VERB
fbem-21457	62	17	by	by	ADP
fbem-21457	62	18	southwest	southwest	PROPN
fbem-21457	62	19	jiaotong	jiaotong	PROPN
fbem-21457	62	20	university	university	PROPN
fbem-21457	62	21	,	,	PUNCT
fbem-21457	62	22	beijing	beijing	PROPN
fbem-21457	62	23	jiaotong	jiaotong	PROPN
fbem-21457	62	24	university	university	PROPN
fbem-21457	62	25	,	,	PUNCT
fbem-21457	62	26	etc	etc	X
fbem-21457	62	27	.	.	X
fbem-21457	62	28	;	;	PUNCT
fbem-21457	62	29	in	in	ADP
fbem-21457	62	30	terms	term	NOUN
fbem-21457	62	31	of	of	ADP
fbem-21457	62	32	the	the	DET
fbem-21457	62	33	location	location	NOUN
fbem-21457	62	34	of	of	ADP
fbem-21457	62	35	the	the	DET
fbem-21457	62	36	cooperative	cooperative	ADJ
fbem-21457	62	37	institutions	institution	NOUN
fbem-21457	62	38	,	,	PUNCT
fbem-21457	62	39	it	it	PRON
fbem-21457	62	40	is	be	AUX
fbem-21457	62	41	easier	easy	ADJ
fbem-21457	62	42	for	for	SCONJ
fbem-21457	62	43	the	the	DET
fbem-21457	62	44	institutions	institution	NOUN
fbem-21457	62	45	in	in	ADP
fbem-21457	62	46	the	the	DET
fbem-21457	62	47	same	same	ADJ
fbem-21457	62	48	region	region	NOUN
fbem-21457	62	49	to	to	PART
fbem-21457	62	50	form	form	VERB
fbem-21457	62	51	a	a	DET
fbem-21457	62	52	cooperative	cooperative	ADJ
fbem-21457	62	53	network	network	NOUN
fbem-21457	62	54	,	,	PUNCT
fbem-21457	62	55	for	for	ADP
fbem-21457	62	56	example	example	NOUN
fbem-21457	62	57	,	,	PUNCT
fbem-21457	62	58	in	in	ADP
fbem-21457	62	59	hubei	hubei	PROPN
fbem-21457	62	60	province	province	PROPN
fbem-21457	62	61	,	,	PUNCT
fbem-21457	62	62	a	a	DET
fbem-21457	62	63	cooperative	cooperative	ADJ
fbem-21457	62	64	network	network	NOUN
fbem-21457	62	65	has	have	AUX
fbem-21457	62	66	been	be	AUX
fbem-21457	62	67	formed	form	VERB
fbem-21457	62	68	by	by	ADP
fbem-21457	62	69	huazhong	huazhong	PROPN
fbem-21457	62	70	university	university	PROPN
fbem-21457	62	71	of	of	ADP
fbem-21457	62	72	science	science	NOUN
fbem-21457	62	73	and	and	CCONJ
fbem-21457	62	74	technology	technology	NOUN
fbem-21457	62	75	,	,	PUNCT
fbem-21457	62	76	wuhan	wuhan	PROPN
fbem-21457	62	77	university	university	PROPN
fbem-21457	62	78	of	of	ADP
fbem-21457	62	79	science	science	NOUN
fbem-21457	62	80	and	and	CCONJ
fbem-21457	62	81	technology	technology	NOUN
fbem-21457	62	82	and	and	CCONJ
fbem-21457	62	83	so	so	ADV
fbem-21457	62	84	on	on	ADV
fbem-21457	62	85	.	.	PUNCT
fbem-21457	63	1	in	in	ADP
fbem-21457	63	2	addition	addition	NOUN
fbem-21457	63	3	to	to	ADP
fbem-21457	63	4	these	these	DET
fbem-21457	63	5	large	large	ADJ
fbem-21457	63	6	cooperative	cooperative	ADJ
fbem-21457	63	7	networks	network	NOUN
fbem-21457	63	8	,	,	PUNCT
fbem-21457	63	9	there	there	PRON
fbem-21457	63	10	are	be	VERB
fbem-21457	63	11	many	many	ADJ
fbem-21457	63	12	cases	case	NOUN
fbem-21457	63	13	of	of	ADP
fbem-21457	63	14	individual	individual	ADJ
fbem-21457	63	15	research	research	NOUN
fbem-21457	63	16	or	or	CCONJ
fbem-21457	63	17	research	research	NOUN
fbem-21457	63	18	by	by	ADP
fbem-21457	63	19	separate	separate	ADJ
fbem-21457	63	20	institutions	institution	NOUN
fbem-21457	63	21	.	.	PUNCT
fbem-21457	64	1	it	it	PRON
fbem-21457	64	2	is	be	AUX
fbem-21457	64	3	difficult	difficult	ADJ
fbem-21457	64	4	to	to	PART
fbem-21457	64	5	cover	cover	VERB
fbem-21457	64	6	all	all	DET
fbem-21457	64	7	aspects	aspect	NOUN
fbem-21457	64	8	of	of	ADP
fbem-21457	64	9	research	research	NOUN
fbem-21457	64	10	by	by	ADP
fbem-21457	64	11	separate	separate	ADJ
fbem-21457	64	12	individuals	individual	NOUN
fbem-21457	64	13	and	and	CCONJ
fbem-21457	64	14	institutions	institution	NOUN
fbem-21457	64	15	,	,	PUNCT
fbem-21457	64	16	and	and	CCONJ
fbem-21457	64	17	it	it	PRON
fbem-21457	64	18	is	be	AUX
fbem-21457	64	19	not	not	PART
fbem-21457	64	20	possible	possible	ADJ
fbem-21457	64	21	to	to	PART
fbem-21457	64	22	do	do	VERB
fbem-21457	64	23	resource	resource	NOUN
fbem-21457	64	24	integration	integration	NOUN
fbem-21457	64	25	,	,	PUNCT
fbem-21457	64	26	so	so	CCONJ
fbem-21457	64	27	only	only	ADV
fbem-21457	64	28	cooperation	cooperation	NOUN
fbem-21457	64	29	between	between	ADP
fbem-21457	64	30	individuals	individual	NOUN
fbem-21457	64	31	and	and	CCONJ
fbem-21457	64	32	institutions	institution	NOUN
fbem-21457	64	33	can	can	AUX
fbem-21457	64	34	complement	complement	VERB
fbem-21457	64	35	each	each	DET
fbem-21457	64	36	other	other	ADJ
fbem-21457	64	37	's	's	PART
fbem-21457	64	38	strengths	strength	NOUN
fbem-21457	64	39	and	and	CCONJ
fbem-21457	64	40	give	give	VERB
fbem-21457	64	41	full	full	ADJ
fbem-21457	64	42	play	play	NOUN
fbem-21457	64	43	to	to	ADP
fbem-21457	64	44	the	the	DET
fbem-21457	64	45	maximum	maximum	ADJ
fbem-21457	64	46	energy	energy	NOUN
fbem-21457	64	47	.	.	PUNCT
fbem-21457	65	1	table	table	NOUN
fbem-21457	65	2	1	1	NUM
fbem-21457	65	3	.	.	X
fbem-21457	65	4	list	list	NOUN
fbem-21457	65	5	of	of	ADP
fbem-21457	65	6	organizations	organization	NOUN
fbem-21457	65	7	with	with	ADP
fbem-21457	65	8	≧6	≧6	NOUN
fbem-21457	65	9	publications	publication	NOUN
fbem-21457	65	10	rankings	ranking	VERB
fbem-21457	65	11	organizations	organization	NOUN
fbem-21457	65	12	volume	volume	NOUN
fbem-21457	65	13	of	of	ADP
fbem-21457	65	14	publications	publication	NOUN
fbem-21457	65	15	year	year	NOUN
fbem-21457	65	16	1	1	NUM
fbem-21457	65	17	southwest	southwest	NOUN
fbem-21457	65	18	jiaotong	jiaotong	PROPN
fbem-21457	65	19	university	university	PROPN
fbem-21457	65	20	12	12	NUM
fbem-21457	65	21	2011	2011	NUM
fbem-21457	65	22	2	2	NUM
fbem-21457	65	23	huazhong	huazhong	NOUN
fbem-21457	65	24	university	university	NOUN
fbem-21457	65	25	of	of	ADP
fbem-21457	65	26	science	science	NOUN
fbem-21457	65	27	and	and	CCONJ
fbem-21457	65	28	technology	technology	NOUN
fbem-21457	65	29	8	8	NUM
fbem-21457	65	30	2008	2008	NUM
fbem-21457	65	31	3	3	NUM
fbem-21457	65	32	shanghai	shanghai	PROPN
fbem-21457	65	33	institute	institute	PROPN
fbem-21457	65	34	of	of	ADP
fbem-21457	65	35	technology	technology	PROPN
fbem-21457	65	36	8	8	NUM
fbem-21457	65	37	2006	2006	NUM
fbem-21457	65	38	4	4	NUM
fbem-21457	65	39	beijing	beijing	PROPN
fbem-21457	65	40	jiaotong	jiaotong	PROPN
fbem-21457	65	41	university	university	PROPN
fbem-21457	65	42	8	8	NUM
fbem-21457	65	43	2005	2005	NUM
fbem-21457	65	44	5	5	NUM
fbem-21457	65	45	southeast	southeast	PROPN
fbem-21457	65	46	university	university	NOUN
fbem-21457	65	47	8	8	NUM
fbem-21457	65	48	2004	2004	NUM
fbem-21457	65	49	6	6	NUM
fbem-21457	65	50	university	university	NOUN
fbem-21457	65	51	of	of	ADP
fbem-21457	65	52	science	science	NOUN
fbem-21457	65	53	and	and	CCONJ
fbem-21457	65	54	technology	technology	NOUN
fbem-21457	65	55	for	for	ADP
fbem-21457	65	56	national	national	ADJ
fbem-21457	65	57	defense	defense	NOUN
fbem-21457	65	58	6	6	NUM
fbem-21457	65	59	2008	2008	NUM
fbem-21457	65	60	7	7	NUM
fbem-21457	65	61	central	central	PROPN
fbem-21457	65	62	south	south	PROPN
fbem-21457	65	63	university	university	PROPN
fbem-21457	65	64	6	6	NUM
fbem-21457	65	65	2004	2004	NUM
fbem-21457	65	66	table2	table2	PROPN
fbem-21457	65	67	.	.	PUNCT
fbem-21457	66	1	list	list	NOUN
fbem-21457	66	2	of	of	ADP
fbem-21457	66	3	authors	author	NOUN
fbem-21457	66	4	with	with	ADP
fbem-21457	66	5	≧3	≧3	NOUN
fbem-21457	66	6	publications	publication	NOUN
fbem-21457	66	7	rankings	ranking	VERB
fbem-21457	66	8	authors	author	NOUN
fbem-21457	66	9	volume	volume	NOUN
fbem-21457	66	10	of	of	ADP
fbem-21457	66	11	publications	publication	NOUN
fbem-21457	66	12	year	year	NOUN
fbem-21457	66	13	1	1	NUM
fbem-21457	66	14	wang	wang	PROPN
fbem-21457	66	15	fei	fei	PROPN
fbem-21457	66	16	5	5	NUM
fbem-21457	66	17	2010	2010	NUM
fbem-21457	66	18	2	2	NUM
fbem-21457	66	19	zhang	zhang	PROPN
fbem-21457	66	20	yi	yi	PROPN
fbem-21457	66	21	4	4	NUM
fbem-21457	66	22	2006	2006	NUM
fbem-21457	66	23	3	3	NUM
fbem-21457	66	24	wang	wang	PROPN
fbem-21457	66	25	xiaobo	xiaobo	PROPN
fbem-21457	67	1	4	4	NUM
fbem-21457	67	2	2006	2006	NUM
fbem-21457	67	3	4	4	NUM
fbem-21457	67	4	gao	gao	PROPN
fbem-21457	67	5	zhenhua	zhenhua	PROPN
fbem-21457	67	6	4	4	NUM
fbem-21457	67	7	2005	2005	NUM
fbem-21457	67	8	5	5	NUM
fbem-21457	67	9	chen	chen	PROPN
fbem-21457	67	10	senfa	senfa	PROPN
fbem-21457	67	11	4	4	NUM
fbem-21457	67	12	2005	2005	NUM
fbem-21457	67	13	6	6	NUM
fbem-21457	67	14	yang	yang	PROPN
fbem-21457	67	15	maosheng	maosheng	PROPN
fbem-21457	67	16	3	3	NUM
fbem-21457	67	17	2007	2007	NUM
fbem-21457	67	18	7	7	NUM
fbem-21457	67	19	mao	mao	NOUN
fbem-21457	67	20	zedong	zedong	PROPN
fbem-21457	67	21	3	3	NUM
fbem-21457	67	22	2009	2009	NUM
fbem-21457	67	23	according	accord	VERB
fbem-21457	67	24	to	to	ADP
fbem-21457	67	25	tables	table	NOUN
fbem-21457	67	26	1	1	NUM
fbem-21457	67	27	and	and	CCONJ
fbem-21457	67	28	2	2	NUM
fbem-21457	67	29	,	,	PUNCT
fbem-21457	67	30	it	it	PRON
fbem-21457	67	31	can	can	AUX
fbem-21457	67	32	be	be	AUX
fbem-21457	67	33	seen	see	VERB
fbem-21457	67	34	that	that	SCONJ
fbem-21457	67	35	the	the	DET
fbem-21457	67	36	influence	influence	NOUN
fbem-21457	67	37	of	of	ADP
fbem-21457	67	38	southwest	southwest	PROPN
fbem-21457	67	39	jiaotong	jiaotong	PROPN
fbem-21457	67	40	university	university	PROPN
fbem-21457	67	41	in	in	ADP
fbem-21457	67	42	the	the	DET
fbem-21457	67	43	field	field	NOUN
fbem-21457	67	44	of	of	ADP
fbem-21457	67	45	distribution	distribution	NOUN
fbem-21457	67	46	center	center	NOUN
fbem-21457	67	47	siting	siting	NOUN
fbem-21457	67	48	research	research	NOUN
fbem-21457	67	49	has	have	VERB
fbem-21457	67	50	a	a	DET
fbem-21457	67	51	clear	clear	ADJ
fbem-21457	67	52	advantage	advantage	NOUN
fbem-21457	67	53	over	over	ADP
fbem-21457	67	54	other	other	ADJ
fbem-21457	67	55	institutions	institution	NOUN
fbem-21457	67	56	,	,	PUNCT
fbem-21457	67	57	with	with	ADP
fbem-21457	67	58	a	a	DET
fbem-21457	67	59	high	high	ADJ
fbem-21457	67	60	number	number	NOUN
fbem-21457	67	61	of	of	ADP
fbem-21457	67	62	12	12	NUM
fbem-21457	67	63	publications	publication	NOUN
fbem-21457	67	64	.	.	PUNCT
fbem-21457	68	1	from	from	ADP
fbem-21457	68	2	the	the	DET
fbem-21457	68	3	aspect	aspect	NOUN
fbem-21457	68	4	of	of	ADP
fbem-21457	68	5	core	core	ADJ
fbem-21457	68	6	research	research	NOUN
fbem-21457	68	7	authors	author	NOUN
fbem-21457	68	8	,	,	PUNCT
fbem-21457	68	9	the	the	DET
fbem-21457	68	10	number	number	NOUN
fbem-21457	68	11	of	of	ADP
fbem-21457	68	12	issued	issue	VERB
fbem-21457	68	13	papers	paper	NOUN
fbem-21457	68	14	in	in	ADP
fbem-21457	68	15	the	the	DET
fbem-21457	68	16	most	most	ADJ
fbem-21457	68	17	is	be	AUX
fbem-21457	68	18	wang	wang	PROPN
fbem-21457	68	19	fei	fei	PROPN
fbem-21457	68	20	,	,	PUNCT
fbem-21457	68	21	published	publish	VERB
fbem-21457	68	22	5	5	NUM
fbem-21457	68	23	documents	document	NOUN
fbem-21457	68	24	.	.	PUNCT
fbem-21457	69	1	4.3	4.3	NUM
fbem-21457	69	2	.	.	PUNCT
fbem-21457	70	1	keyword	keyword	NOUN
fbem-21457	70	2	co	co	NOUN
fbem-21457	70	3	-	-	NOUN
fbem-21457	70	4	occurrence	occurrence	ADJ
fbem-21457	70	5	analysis	analysis	NOUN
fbem-21457	70	6	keywords	keyword	NOUN
fbem-21457	70	7	are	be	AUX
fbem-21457	70	8	the	the	DET
fbem-21457	70	9	condensation	condensation	NOUN
fbem-21457	70	10	of	of	ADP
fbem-21457	70	11	the	the	DET
fbem-21457	70	12	core	core	NOUN
fbem-21457	70	13	content	content	NOUN
fbem-21457	70	14	and	and	CCONJ
fbem-21457	70	15	ideas	idea	NOUN
fbem-21457	70	16	of	of	ADP
fbem-21457	70	17	the	the	DET
fbem-21457	70	18	articles	article	NOUN
fbem-21457	70	19	.	.	PUNCT
fbem-21457	71	1	according	accord	VERB
fbem-21457	71	2	to	to	ADP
fbem-21457	71	3	citespace	citespace	NOUN
fbem-21457	71	4	,	,	PUNCT
fbem-21457	71	5	the	the	DET
fbem-21457	71	6	keyword	keyword	NOUN
fbem-21457	71	7	cooccurrence	cooccurrence	NOUN
fbem-21457	71	8	map	map	NOUN
fbem-21457	71	9	shown	show	VERB
fbem-21457	71	10	in	in	ADP
fbem-21457	71	11	figure	figure	NOUN
fbem-21457	71	12	3	3	NUM
fbem-21457	71	13	was	be	AUX
fbem-21457	71	14	obtained	obtain	VERB
fbem-21457	71	15	,	,	PUNCT
fbem-21457	71	16	which	which	PRON
fbem-21457	71	17	generated	generate	VERB
fbem-21457	71	18	a	a	DET
fbem-21457	71	19	total	total	NOUN
fbem-21457	71	20	of	of	ADP
fbem-21457	71	21	494	494	NUM
fbem-21457	71	22	nodes	node	NOUN
fbem-21457	71	23	and	and	CCONJ
fbem-21457	71	24	743	743	NUM
fbem-21457	71	25	connecting	connect	VERB
fbem-21457	71	26	lines	line	NOUN
fbem-21457	71	27	.	.	PUNCT
fbem-21457	72	1	as	as	SCONJ
fbem-21457	72	2	shown	show	VERB
fbem-21457	72	3	in	in	ADP
fbem-21457	72	4	fig	fig	NOUN
fbem-21457	72	5	.	.	PUNCT
fbem-21457	73	1	3	3	NUM
fbem-21457	73	2	,	,	PUNCT
fbem-21457	73	3	the	the	DET
fbem-21457	73	4	hot	hot	ADJ
fbem-21457	73	5	words	word	NOUN
fbem-21457	73	6	in	in	ADP
fbem-21457	73	7	this	this	DET
fbem-21457	73	8	field	field	NOUN
fbem-21457	73	9	are	be	AUX
fbem-21457	73	10	"	"	PUNCT
fbem-21457	73	11	site	site	NOUN
fbem-21457	73	12	selection	selection	NOUN
fbem-21457	73	13	"	"	PUNCT
fbem-21457	73	14	,	,	PUNCT
fbem-21457	73	15	"	"	PUNCT
fbem-21457	73	16	genetic	genetic	ADJ
fbem-21457	73	17	algorithm	algorithm	NOUN
fbem-21457	73	18	"	"	PUNCT
fbem-21457	73	19	,	,	PUNCT
fbem-21457	73	20	"	"	PUNCT
fbem-21457	73	21	center	center	NOUN
fbem-21457	73	22	of	of	ADP
fbem-21457	73	23	gravity	gravity	NOUN
fbem-21457	73	24	"	"	PUNCT
fbem-21457	73	25	and	and	CCONJ
fbem-21457	73	26	so	so	ADV
fbem-21457	73	27	on	on	ADV
fbem-21457	73	28	.	.	PUNCT
fbem-21457	74	1	figure	figure	NOUN
fbem-21457	74	2	3	3	NUM
fbem-21457	74	3	.	.	PUNCT
fbem-21457	75	1	keyword	keyword	NOUN
fbem-21457	75	2	co	co	NOUN
fbem-21457	75	3	-	-	NOUN
fbem-21457	75	4	occurrence	occurrence	ADJ
fbem-21457	75	5	mapping	mapping	NOUN
fbem-21457	75	6	organize	organize	VERB
fbem-21457	75	7	the	the	DET
fbem-21457	75	8	relevant	relevant	ADJ
fbem-21457	75	9	data	datum	NOUN
fbem-21457	75	10	to	to	PART
fbem-21457	75	11	derive	derive	VERB
fbem-21457	75	12	a	a	DET
fbem-21457	75	13	statistical	statistical	ADJ
fbem-21457	75	14	table	table	NOUN
fbem-21457	75	15	of	of	ADP
fbem-21457	75	16	high	high	ADJ
fbem-21457	75	17	-	-	PUNCT
fbem-21457	75	18	frequency	frequency	NOUN
fbem-21457	75	19	keywords	keyword	NOUN
fbem-21457	75	20	frequency	frequency	NOUN
fbem-21457	75	21	and	and	CCONJ
fbem-21457	75	22	their	their	PRON
fbem-21457	75	23	centrality	centrality	NOUN
fbem-21457	75	24	(	(	PUNCT
fbem-21457	75	25	only	only	ADV
fbem-21457	75	26	the	the	DET
fbem-21457	75	27	keywords	keyword	NOUN
fbem-21457	75	28	with	with	ADP
fbem-21457	75	29	frequency>20	frequency>20	PROPN
fbem-21457	75	30	are	be	AUX
fbem-21457	75	31	displayed	display	VERB
fbem-21457	75	32	)	)	PUNCT
fbem-21457	75	33	,	,	PUNCT
fbem-21457	75	34	the	the	DET
fbem-21457	75	35	details	detail	NOUN
fbem-21457	75	36	are	be	AUX
fbem-21457	75	37	shown	show	VERB
fbem-21457	75	38	in	in	ADP
fbem-21457	75	39	table	table	NOUN
fbem-21457	75	40	3	3	NUM
fbem-21457	75	41	.	.	PUNCT
fbem-21457	75	42	table	table	NOUN
fbem-21457	75	43	3	3	NUM
fbem-21457	75	44	.	.	PUNCT
fbem-21457	75	45	statistical	statistical	ADJ
fbem-21457	75	46	table	table	NOUN
fbem-21457	75	47	of	of	ADP
fbem-21457	75	48	high	high	ADJ
fbem-21457	75	49	-	-	PUNCT
fbem-21457	75	50	frequency	frequency	NOUN
fbem-21457	75	51	keywords	keyword	NOUN
fbem-21457	75	52	(	(	PUNCT
fbem-21457	75	53	frequency>20	frequency>20	PROPN
fbem-21457	75	54	)	)	PUNCT
fbem-21457	75	55	arrange	arrange	NOUN
fbem-21457	75	56	in	in	SCONJ
fbem-21457	75	57	order	order	NOUN
fbem-21457	75	58	keywords	keyword	NOUN
fbem-21457	75	59	centrality	centrality	VERB
fbem-21457	75	60	frequency	frequency	NOUN
fbem-21457	75	61	1	1	NUM
fbem-21457	75	62	site	site	NOUN
fbem-21457	75	63	selection	selection	NOUN
fbem-21457	75	64	0.35	0.35	NUM
fbem-21457	75	65	158	158	NUM
fbem-21457	75	66	2	2	NUM
fbem-21457	75	67	distribution	distribution	NOUN
fbem-21457	75	68	centers	center	NOUN
fbem-21457	75	69	0.39	0.39	NUM
fbem-21457	75	70	96	96	NUM
fbem-21457	75	71	3	3	NUM
fbem-21457	75	72	genetic	genetic	ADJ
fbem-21457	75	73	algorithm	algorithm	NOUN
fbem-21457	75	74	0.33	0.33	NUM
fbem-21457	75	75	50	50	NUM
fbem-21457	75	76	4	4	NUM
fbem-21457	75	77	logistics	logistic	NOUN
fbem-21457	75	78	center	center	NOUN
fbem-21457	75	79	0.17	0.17	NUM
fbem-21457	75	80	39	39	NUM
fbem-21457	75	81	5	5	NUM
fbem-21457	75	82	site	site	NOUN
fbem-21457	75	83	selection	selection	NOUN
fbem-21457	75	84	model	model	NOUN
fbem-21457	75	85	0.2	0.2	NUM
fbem-21457	75	86	37	37	NUM
fbem-21457	75	87	6	6	NUM
fbem-21457	75	88	logistics	logistic	NOUN
fbem-21457	75	89	0.36	0.36	NUM
fbem-21457	75	90	29	29	NUM
fbem-21457	75	91	based	base	VERB
fbem-21457	75	92	on	on	ADP
fbem-21457	75	93	the	the	DET
fbem-21457	75	94	keyword	keyword	NOUN
fbem-21457	75	95	highlighting	highlighting	NOUN
fbem-21457	75	96	,	,	PUNCT
fbem-21457	75	97	it	it	PRON
fbem-21457	75	98	is	be	AUX
fbem-21457	75	99	possible	possible	ADJ
fbem-21457	75	100	to	to	PART
fbem-21457	75	101	observe	observe	VERB
fbem-21457	75	102	the	the	DET
fbem-21457	75	103	degree	degree	NOUN
fbem-21457	75	104	of	of	ADP
fbem-21457	75	105	change	change	NOUN
fbem-21457	75	106	of	of	ADP
fbem-21457	75	107	a	a	DET
fbem-21457	75	108	keyword	keyword	NOUN
fbem-21457	75	109	in	in	ADP
fbem-21457	75	110	different	different	ADJ
fbem-21457	75	111	years	year	NOUN
fbem-21457	75	112	,	,	PUNCT
fbem-21457	75	113	thus	thus	ADV
fbem-21457	75	114	showing	show	VERB
fbem-21457	75	115	the	the	DET
fbem-21457	75	116	turning	turning	NOUN
fbem-21457	75	117	point	point	NOUN
fbem-21457	75	118	of	of	ADP
fbem-21457	75	119	the	the	DET
fbem-21457	75	120	study	study	NOUN
fbem-21457	75	121	.	.	PUNCT
fbem-21457	76	1	as	as	SCONJ
fbem-21457	76	2	can	can	AUX
fbem-21457	76	3	be	be	AUX
fbem-21457	76	4	seen	see	VERB
fbem-21457	76	5	in	in	ADP
fbem-21457	76	6	figure	figure	NOUN
fbem-21457	76	7	4	4	NUM
fbem-21457	76	8	,	,	PUNCT
fbem-21457	76	9	17	17	NUM
fbem-21457	76	10	keywords	keyword	NOUN
fbem-21457	76	11	such	such	ADJ
fbem-21457	76	12	as	as	ADP
fbem-21457	76	13	"	"	PUNCT
fbem-21457	76	14	site	site	NOUN
fbem-21457	76	15	selection	selection	NOUN
fbem-21457	76	16	problem	problem	NOUN
fbem-21457	76	17	"	"	PUNCT
fbem-21457	76	18	and	and	CCONJ
fbem-21457	76	19	"	"	PUNCT
fbem-21457	76	20	distribution	distribution	NOUN
fbem-21457	76	21	center	center	NOUN
fbem-21457	76	22	"	"	PUNCT
fbem-21457	76	23	are	be	AUX
fbem-21457	76	24	shown	show	VERB
fbem-21457	76	25	.	.	PUNCT
fbem-21457	77	1	from	from	ADP
fbem-21457	77	2	the	the	DET
fbem-21457	77	3	perspective	perspective	NOUN
fbem-21457	77	4	of	of	ADP
fbem-21457	77	5	highlighting	highlight	VERB
fbem-21457	77	6	intensity	intensity	NOUN
fbem-21457	77	7	,	,	PUNCT
fbem-21457	77	8	the	the	DET
fbem-21457	77	9	"	"	PUNCT
fbem-21457	77	10	siting	siting	NOUN
fbem-21457	77	11	model	model	NOUN
fbem-21457	77	12	"	"	PUNCT
fbem-21457	77	13	has	have	VERB
fbem-21457	77	14	the	the	DET
fbem-21457	77	15	highest	high	ADJ
fbem-21457	77	16	highlighting	highlighting	NOUN
fbem-21457	77	17	intensity	intensity	NOUN
fbem-21457	77	18	(	(	PUNCT
fbem-21457	77	19	3.84	3.84	NUM
fbem-21457	77	20	)	)	PUNCT
fbem-21457	77	21	,	,	PUNCT
fbem-21457	77	22	which	which	PRON
fbem-21457	77	23	is	be	AUX
fbem-21457	77	24	the	the	DET
fbem-21457	77	25	research	research	NOUN
fbem-21457	77	26	frontier	frontier	NOUN
fbem-21457	77	27	in	in	ADP
fbem-21457	77	28	the	the	DET
fbem-21457	77	29	field	field	NOUN
fbem-21457	77	30	of	of	ADP
fbem-21457	77	31	distribution	distribution	NOUN
fbem-21457	77	32	center	center	NOUN
fbem-21457	77	33	siting	siting	NOUN
fbem-21457	77	34	research	research	NOUN
fbem-21457	77	35	,	,	PUNCT
fbem-21457	77	36	and	and	CCONJ
fbem-21457	77	37	the	the	DET
fbem-21457	77	38	lowest	low	ADJ
fbem-21457	77	39	highlighting	highlighting	NOUN
fbem-21457	77	40	intensity	intensity	NOUN
fbem-21457	77	41	is	be	AUX
fbem-21457	77	42	the	the	DET
fbem-21457	77	43	"	"	PUNCT
fbem-21457	77	44	particle	particle	NOUN
fbem-21457	77	45	swarm	swarm	NOUN
fbem-21457	77	46	"	"	PUNCT
fbem-21457	77	47	(	(	PUNCT
fbem-21457	77	48	1.7	1.7	NUM
fbem-21457	77	49	)	)	PUNCT
fbem-21457	77	50	,	,	PUNCT
fbem-21457	77	51	which	which	PRON
fbem-21457	77	52	is	be	AUX
fbem-21457	77	53	probably	probably	ADV
fbem-21457	77	54	due	due	ADJ
fbem-21457	77	55	to	to	ADP
fbem-21457	77	56	the	the	DET
fbem-21457	77	57	limitations	limitation	NOUN
fbem-21457	77	58	of	of	ADP
fbem-21457	77	59	the	the	DET
fbem-21457	77	60	particle	particle	NOUN
fbem-21457	77	61	swarm	swarm	NOUN
fbem-21457	77	62	algorithm	algorithm	NOUN
fbem-21457	77	63	,	,	PUNCT
fbem-21457	77	64	which	which	PRON
fbem-21457	77	65	is	be	AUX
fbem-21457	77	66	unable	unable	ADJ
fbem-21457	77	67	to	to	PART
fbem-21457	77	68	deal	deal	VERB
fbem-21457	77	69	with	with	ADP
fbem-21457	77	70	discrete	discrete	ADJ
fbem-21457	77	71	optimization	optimization	NOUN
fbem-21457	77	72	problems	problem	NOUN
fbem-21457	77	73	well	well	ADV
fbem-21457	77	74	.	.	PUNCT
fbem-21457	78	1	possibly	possibly	ADV
fbem-21457	78	2	because	because	SCONJ
fbem-21457	78	3	of	of	ADP
fbem-21457	78	4	the	the	DET
fbem-21457	78	5	limitations	limitation	NOUN
fbem-21457	78	6	of	of	ADP
fbem-21457	78	7	the	the	DET
fbem-21457	78	8	particle	particle	NOUN
fbem-21457	78	9	swarm	swarm	NOUN
fbem-21457	78	10	algorithm	algorithm	NOUN
fbem-21457	78	11	:	:	PUNCT
fbem-21457	78	12	it	it	PRON
fbem-21457	78	13	can	can	AUX
fbem-21457	78	14	not	not	PART
fbem-21457	78	15	better	well	ADV
fbem-21457	78	16	deal	deal	VERB
fbem-21457	78	17	with	with	ADP
fbem-21457	78	18	discrete	discrete	ADJ
fbem-21457	78	19	optimization	optimization	NOUN
fbem-21457	78	20	problems	problem	NOUN
fbem-21457	78	21	and	and	CCONJ
fbem-21457	78	22	is	be	AUX
fbem-21457	78	23	easy	easy	ADJ
fbem-21457	78	24	to	to	PART
fbem-21457	78	25	fall	fall	VERB
fbem-21457	78	26	into	into	ADP
fbem-21457	78	27	the	the	DET
fbem-21457	78	28	local	local	ADJ
fbem-21457	78	29	optimum	optimum	NOUN
fbem-21457	78	30	;	;	PUNCT
fbem-21457	78	31	from	from	ADP
fbem-21457	78	32	the	the	DET
fbem-21457	78	33	point	point	NOUN
fbem-21457	78	34	of	of	ADP
fbem-21457	78	35	view	view	NOUN
fbem-21457	78	36	of	of	ADP
fbem-21457	78	37	the	the	DET
fbem-21457	78	38	highlighting	highlighting	NOUN
fbem-21457	78	39	time	time	NOUN
fbem-21457	78	40	,	,	PUNCT
fbem-21457	78	41	the	the	DET
fbem-21457	78	42	highlighting	highlighting	NOUN
fbem-21457	78	43	of	of	ADP
fbem-21457	78	44	"	"	PUNCT
fbem-21457	78	45	logistics	logistic	NOUN
fbem-21457	78	46	"	"	PUNCT
fbem-21457	78	47	lasts	last	VERB
fbem-21457	78	48	the	the	DET
fbem-21457	78	49	longest	long	ADJ
fbem-21457	78	50	,	,	PUNCT
fbem-21457	78	51	for	for	ADP
fbem-21457	78	52	8	8	NUM
fbem-21457	78	53	years	year	NOUN
fbem-21457	78	54	,	,	PUNCT
fbem-21457	78	55	and	and	CCONJ
fbem-21457	78	56	the	the	DET
fbem-21457	78	57	highlighting	highlighting	NOUN
fbem-21457	78	58	time	time	NOUN
fbem-21457	78	59	is	be	AUX
fbem-21457	78	60	the	the	DET
fbem-21457	78	61	lowest	low	ADJ
fbem-21457	78	62	for	for	ADP
fbem-21457	78	63	the	the	DET
fbem-21457	78	64	"	"	PUNCT
fbem-21457	78	65	siting	siting	NOUN
fbem-21457	78	66	problem	problem	NOUN
fbem-21457	78	67	"	"	PUNCT
fbem-21457	78	68	and	and	CCONJ
fbem-21457	78	69	"	"	PUNCT
fbem-21457	78	70	particle	particle	NOUN
fbem-21457	78	71	swarm	swarm	NOUN
fbem-21457	78	72	"	"	PUNCT
fbem-21457	78	73	,	,	PUNCT
fbem-21457	78	74	both	both	PRON
fbem-21457	78	75	of	of	ADP
fbem-21457	78	76	which	which	PRON
fbem-21457	78	77	have	have	AUX
fbem-21457	78	78	been	be	AUX
fbem-21457	78	79	highlighted	highlight	VERB
fbem-21457	78	80	for	for	ADP
fbem-21457	78	81	a	a	DET
fbem-21457	78	82	long	long	ADJ
fbem-21457	78	83	time	time	NOUN
fbem-21457	78	84	.	.	PUNCT
fbem-21457	79	1	the	the	DET
fbem-21457	79	2	lowest	low	ADJ
fbem-21457	79	3	are	be	AUX
fbem-21457	79	4	"	"	PUNCT
fbem-21457	79	5	site	site	NOUN
fbem-21457	79	6	selection	selection	NOUN
fbem-21457	79	7	problem	problem	NOUN
fbem-21457	79	8	"	"	PUNCT
fbem-21457	79	9	and	and	CCONJ
fbem-21457	79	10	"	"	PUNCT
fbem-21457	79	11	particle	particle	NOUN
fbem-21457	79	12	swarm	swarm	NOUN
fbem-21457	79	13	"	"	PUNCT
fbem-21457	79	14	,	,	PUNCT
fbem-21457	79	15	both	both	PRON
fbem-21457	79	16	of	of	ADP
fbem-21457	79	17	which	which	PRON
fbem-21457	79	18	have	have	VERB
fbem-21457	79	19	only	only	ADV
fbem-21457	79	20	1	1	NUM
fbem-21457	79	21	324	324	NUM
fbem-21457	79	22	year	year	NOUN
fbem-21457	79	23	of	of	ADP
fbem-21457	79	24	highlighting	highlighting	NOUN
fbem-21457	79	25	time	time	NOUN
fbem-21457	79	26	.	.	PUNCT
fbem-21457	80	1	from	from	ADP
fbem-21457	80	2	2000	2000	NUM
fbem-21457	80	3	to	to	ADP
fbem-21457	80	4	2010	2010	NUM
fbem-21457	80	5	,	,	PUNCT
fbem-21457	80	6	people	people	NOUN
fbem-21457	80	7	pay	pay	VERB
fbem-21457	80	8	attention	attention	NOUN
fbem-21457	80	9	to	to	ADP
fbem-21457	80	10	"	"	PUNCT
fbem-21457	80	11	e	e	NOUN
fbem-21457	80	12	-	-	NOUN
fbem-21457	80	13	commerce	commerce	NOUN
fbem-21457	80	14	"	"	PUNCT
fbem-21457	80	15	,	,	PUNCT
fbem-21457	80	16	"	"	PUNCT
fbem-21457	80	17	site	site	NOUN
fbem-21457	80	18	selection	selection	NOUN
fbem-21457	80	19	model	model	NOUN
fbem-21457	80	20	"	"	PUNCT
fbem-21457	80	21	,	,	PUNCT
fbem-21457	80	22	etc	etc	X
fbem-21457	80	23	.	.	X
fbem-21457	81	1	the	the	DET
fbem-21457	81	2	reason	reason	NOUN
fbem-21457	81	3	may	may	AUX
fbem-21457	81	4	be	be	AUX
fbem-21457	81	5	that	that	SCONJ
fbem-21457	81	6	under	under	ADP
fbem-21457	81	7	the	the	DET
fbem-21457	81	8	rapid	rapid	ADJ
fbem-21457	81	9	development	development	NOUN
fbem-21457	81	10	of	of	ADP
fbem-21457	81	11	e	e	PROPN
fbem-21457	81	12	-	-	NOUN
fbem-21457	81	13	commerce	commerce	NOUN
fbem-21457	81	14	,	,	PUNCT
fbem-21457	81	15	enterprises	enterprise	NOUN
fbem-21457	81	16	realize	realize	VERB
fbem-21457	81	17	the	the	DET
fbem-21457	81	18	importance	importance	NOUN
fbem-21457	81	19	of	of	ADP
fbem-21457	81	20	correct	correct	ADJ
fbem-21457	81	21	site	site	NOUN
fbem-21457	81	22	selection	selection	NOUN
fbem-21457	81	23	for	for	ADP
fbem-21457	81	24	logistics	logistic	NOUN
fbem-21457	81	25	and	and	CCONJ
fbem-21457	81	26	distribution	distribution	NOUN
fbem-21457	81	27	.	.	PUNCT
fbem-21457	82	1	from	from	ADP
fbem-21457	82	2	2010	2010	NUM
fbem-21457	82	3	to	to	ADP
fbem-21457	82	4	2020	2020	NUM
fbem-21457	82	5	,	,	PUNCT
fbem-21457	82	6	we	we	PRON
fbem-21457	82	7	are	be	AUX
fbem-21457	82	8	concerned	concerned	ADJ
fbem-21457	82	9	about	about	ADP
fbem-21457	82	10	the	the	DET
fbem-21457	82	11	"	"	PUNCT
fbem-21457	82	12	optimization	optimization	NOUN
fbem-21457	82	13	model	model	NOUN
fbem-21457	82	14	"	"	PUNCT
fbem-21457	82	15	,	,	PUNCT
fbem-21457	82	16	"	"	PUNCT
fbem-21457	82	17	carbon	carbon	NOUN
fbem-21457	82	18	emission	emission	NOUN
fbem-21457	82	19	"	"	PUNCT
fbem-21457	82	20	,	,	PUNCT
fbem-21457	82	21	etc	etc	X
fbem-21457	82	22	.	.	X
fbem-21457	83	1	during	during	ADP
fbem-21457	83	2	this	this	DET
fbem-21457	83	3	period	period	NOUN
fbem-21457	83	4	,	,	PUNCT
fbem-21457	83	5	the	the	DET
fbem-21457	83	6	state	state	NOUN
fbem-21457	83	7	puts	put	VERB
fbem-21457	83	8	forward	forward	ADV
fbem-21457	83	9	the	the	DET
fbem-21457	83	10	green	green	PROPN
fbem-21457	83	11	development	development	NOUN
fbem-21457	83	12	concept	concept	NOUN
fbem-21457	83	13	of	of	ADP
fbem-21457	83	14	"	"	PUNCT
fbem-21457	83	15	green	green	ADJ
fbem-21457	83	16	water	water	NOUN
fbem-21457	83	17	and	and	CCONJ
fbem-21457	83	18	green	green	ADJ
fbem-21457	83	19	mountains	mountain	NOUN
fbem-21457	83	20	are	be	AUX
fbem-21457	83	21	golden	golden	ADJ
fbem-21457	83	22	silver	silver	NOUN
fbem-21457	83	23	mountains".the	mountains".the	DET
fbem-21457	83	24	concept	concept	NOUN
fbem-21457	83	25	of	of	ADP
fbem-21457	83	26	green	green	ADJ
fbem-21457	83	27	development	development	NOUN
fbem-21457	83	28	.	.	PUNCT
fbem-21457	84	1	scholars	scholar	NOUN
fbem-21457	84	2	,	,	PUNCT
fbem-21457	84	3	when	when	SCONJ
fbem-21457	84	4	facing	face	VERB
fbem-21457	84	5	the	the	DET
fbem-21457	84	6	problem	problem	NOUN
fbem-21457	84	7	of	of	ADP
fbem-21457	84	8	site	site	NOUN
fbem-21457	84	9	selection	selection	NOUN
fbem-21457	84	10	,	,	PUNCT
fbem-21457	84	11	not	not	PART
fbem-21457	84	12	only	only	ADV
fbem-21457	84	13	consider	consider	VERB
fbem-21457	84	14	the	the	DET
fbem-21457	84	15	cost	cost	NOUN
fbem-21457	84	16	and	and	CCONJ
fbem-21457	84	17	benefit	benefit	VERB
fbem-21457	84	18	but	but	CCONJ
fbem-21457	84	19	also	also	ADV
fbem-21457	84	20	start	start	VERB
fbem-21457	84	21	to	to	PART
fbem-21457	84	22	consider	consider	VERB
fbem-21457	84	23	environmental	environmental	ADJ
fbem-21457	84	24	issues	issue	NOUN
fbem-21457	84	25	such	such	ADJ
fbem-21457	84	26	as	as	ADP
fbem-21457	84	27	carbon	carbon	NOUN
fbem-21457	84	28	emission	emission	NOUN
fbem-21457	84	29	.	.	PUNCT
fbem-21457	85	1	since	since	SCONJ
fbem-21457	85	2	2020	2020	NUM
fbem-21457	85	3	,	,	PUNCT
fbem-21457	85	4	we	we	PRON
fbem-21457	85	5	have	have	AUX
fbem-21457	85	6	started	start	VERB
fbem-21457	85	7	to	to	PART
fbem-21457	85	8	pay	pay	VERB
fbem-21457	85	9	attention	attention	NOUN
fbem-21457	85	10	to	to	ADP
fbem-21457	85	11	the	the	DET
fbem-21457	85	12	issues	issue	NOUN
fbem-21457	85	13	of	of	ADP
fbem-21457	85	14	"	"	PUNCT
fbem-21457	85	15	path	path	NOUN
fbem-21457	85	16	optimization	optimization	NOUN
fbem-21457	85	17	"	"	PUNCT
fbem-21457	85	18	and	and	CCONJ
fbem-21457	85	19	"	"	PUNCT
fbem-21457	85	20	two	two	NUM
fbem-21457	85	21	-	-	PUNCT
fbem-21457	85	22	layer	layer	NOUN
fbem-21457	85	23	planning	planning	NOUN
fbem-21457	85	24	"	"	PUNCT
fbem-21457	85	25	,	,	PUNCT
fbem-21457	85	26	and	and	CCONJ
fbem-21457	85	27	the	the	DET
fbem-21457	85	28	combination	combination	NOUN
fbem-21457	85	29	of	of	ADP
fbem-21457	85	30	site	site	NOUN
fbem-21457	85	31	selection	selection	NOUN
fbem-21457	85	32	and	and	CCONJ
fbem-21457	85	33	path	path	NOUN
fbem-21457	85	34	can	can	AUX
fbem-21457	85	35	better	well	ADV
fbem-21457	85	36	achieve	achieve	VERB
fbem-21457	85	37	the	the	DET
fbem-21457	85	38	goal	goal	NOUN
fbem-21457	85	39	of	of	ADP
fbem-21457	85	40	maximizing	maximize	VERB
fbem-21457	85	41	benefits	benefit	NOUN
fbem-21457	85	42	.	.	PUNCT
fbem-21457	86	1	"	"	PUNCT
fbem-21457	86	2	path	path	NOUN
fbem-21457	86	3	optimization	optimization	NOUN
fbem-21457	86	4	"	"	PUNCT
fbem-21457	86	5	and	and	CCONJ
fbem-21457	86	6	"	"	PUNCT
fbem-21457	86	7	twotier	twoti	ADJ
fbem-21457	86	8	planning	planning	NOUN
fbem-21457	86	9	"	"	PUNCT
fbem-21457	86	10	have	have	AUX
fbem-21457	86	11	been	be	AUX
fbem-21457	86	12	a	a	DET
fbem-21457	86	13	hot	hot	ADJ
fbem-21457	86	14	research	research	NOUN
fbem-21457	86	15	topic	topic	NOUN
fbem-21457	86	16	in	in	ADP
fbem-21457	86	17	the	the	DET
fbem-21457	86	18	past	past	ADJ
fbem-21457	86	19	five	five	NUM
fbem-21457	86	20	years	year	NOUN
fbem-21457	86	21	,	,	PUNCT
fbem-21457	86	22	and	and	CCONJ
fbem-21457	86	23	are	be	AUX
fbem-21457	86	24	likely	likely	ADJ
fbem-21457	86	25	to	to	PART
fbem-21457	86	26	be	be	AUX
fbem-21457	86	27	the	the	DET
fbem-21457	86	28	future	future	ADJ
fbem-21457	86	29	development	development	NOUN
fbem-21457	86	30	trend	trend	NOUN
fbem-21457	86	31	in	in	ADP
fbem-21457	86	32	this	this	DET
fbem-21457	86	33	field	field	NOUN
fbem-21457	86	34	.	.	PUNCT
fbem-21457	87	1	figure	figure	VERB
fbem-21457	87	2	4	4	NUM
fbem-21457	87	3	.	.	PUNCT
fbem-21457	88	1	keyword	keyword	NOUN
fbem-21457	88	2	surfacing	surface	VERB
fbem-21457	88	3	chart	chart	NOUN
fbem-21457	88	4	4.4	4.4	NUM
fbem-21457	88	5	.	.	PUNCT
fbem-21457	89	1	keyword	keyword	NOUN
fbem-21457	89	2	cluster	cluster	NOUN
fbem-21457	89	3	analysis	analysis	NOUN
fbem-21457	89	4	cluster	cluster	NOUN
fbem-21457	89	5	analysis	analysis	NOUN
fbem-21457	89	6	of	of	ADP
fbem-21457	89	7	keywords	keyword	NOUN
fbem-21457	89	8	using	use	VERB
fbem-21457	89	9	citespace	citespace	NOUN
fbem-21457	89	10	software	software	NOUN
fbem-21457	89	11	can	can	AUX
fbem-21457	89	12	be	be	AUX
fbem-21457	89	13	used	use	VERB
fbem-21457	89	14	to	to	PART
fbem-21457	89	15	understand	understand	VERB
fbem-21457	89	16	whether	whether	SCONJ
fbem-21457	89	17	there	there	PRON
fbem-21457	89	18	is	be	VERB
fbem-21457	89	19	any	any	DET
fbem-21457	89	20	commonality	commonality	NOUN
fbem-21457	89	21	in	in	ADP
fbem-21457	89	22	the	the	DET
fbem-21457	89	23	research	research	NOUN
fbem-21457	89	24	hotspots	hotspot	NOUN
fbem-21457	89	25	in	in	ADP
fbem-21457	89	26	the	the	DET
fbem-21457	89	27	field	field	NOUN
fbem-21457	89	28	.	.	PUNCT
fbem-21457	90	1	two	two	NUM
fbem-21457	90	2	important	important	ADJ
fbem-21457	90	3	indicators	indicator	NOUN
fbem-21457	90	4	are	be	AUX
fbem-21457	90	5	generated	generate	VERB
fbem-21457	90	6	after	after	ADP
fbem-21457	90	7	clustering	cluster	VERB
fbem-21457	90	8	,	,	PUNCT
fbem-21457	90	9	namely	namely	ADV
fbem-21457	90	10	,	,	PUNCT
fbem-21457	90	11	modular	modular	ADJ
fbem-21457	90	12	value	value	NOUN
fbem-21457	90	13	(	(	PUNCT
fbem-21457	90	14	qvalue	qvalue	NOUN
fbem-21457	90	15	)	)	PUNCT
fbem-21457	90	16	and	and	CCONJ
fbem-21457	90	17	mean	mean	VERB
fbem-21457	90	18	contour	contour	NOUN
fbem-21457	90	19	value	value	NOUN
fbem-21457	90	20	(	(	PUNCT
fbem-21457	90	21	s	s	NOUN
fbem-21457	90	22	-	-	NOUN
fbem-21457	90	23	value	value	NOUN
fbem-21457	90	24	)	)	PUNCT
fbem-21457	90	25	to	to	PART
fbem-21457	90	26	assess	assess	VERB
fbem-21457	90	27	the	the	DET
fbem-21457	90	28	quality	quality	NOUN
fbem-21457	90	29	of	of	ADP
fbem-21457	90	30	the	the	DET
fbem-21457	90	31	effect	effect	NOUN
fbem-21457	90	32	of	of	ADP
fbem-21457	90	33	clustering	clustering	NOUN
fbem-21457	90	34	.	.	PUNCT
fbem-21457	91	1	q	q	X
fbem-21457	91	2	-	-	PUNCT
fbem-21457	91	3	value>0.3	value>0.3	NOUN
fbem-21457	91	4	indicates	indicate	VERB
fbem-21457	91	5	significant	significant	ADJ
fbem-21457	91	6	community	community	NOUN
fbem-21457	91	7	structure	structure	NOUN
fbem-21457	91	8	,	,	PUNCT
fbem-21457	91	9	and	and	CCONJ
fbem-21457	91	10	s	s	X
fbem-21457	91	11	-	-	PUNCT
fbem-21457	91	12	value>0.7	value>0.7	NOUN
fbem-21457	91	13	indicates	indicate	VERB
fbem-21457	91	14	that	that	SCONJ
fbem-21457	91	15	the	the	DET
fbem-21457	91	16	clusters	cluster	NOUN
fbem-21457	91	17	are	be	AUX
fbem-21457	91	18	highly	highly	ADV
fbem-21457	91	19	concentrated	concentrate	VERB
fbem-21457	91	20	,	,	PUNCT
fbem-21457	91	21	at	at	ADP
fbem-21457	91	22	which	which	DET
fbem-21457	91	23	time	time	NOUN
fbem-21457	91	24	the	the	DET
fbem-21457	91	25	model	model	NOUN
fbem-21457	91	26	is	be	AUX
fbem-21457	91	27	of	of	ADP
fbem-21457	91	28	practical	practical	ADJ
fbem-21457	91	29	research	research	NOUN
fbem-21457	91	30	significance	significance	NOUN
fbem-21457	91	31	.	.	PUNCT
fbem-21457	92	1	the	the	DET
fbem-21457	92	2	parameters	parameter	NOUN
fbem-21457	92	3	in	in	ADP
fbem-21457	92	4	the	the	DET
fbem-21457	92	5	clustering	clustering	ADJ
fbem-21457	92	6	model	model	NOUN
fbem-21457	92	7	of	of	ADP
fbem-21457	92	8	this	this	DET
fbem-21457	92	9	paper	paper	NOUN
fbem-21457	92	10	were	be	AUX
fbem-21457	92	11	q=0.8645	q=0.8645	ADJ
fbem-21457	92	12	and	and	CCONJ
fbem-21457	92	13	s=0.9644	s=0.9644	PROPN
fbem-21457	92	14	,	,	PUNCT
fbem-21457	92	15	which	which	PRON
fbem-21457	92	16	indicated	indicate	VERB
fbem-21457	92	17	that	that	SCONJ
fbem-21457	92	18	the	the	DET
fbem-21457	92	19	clustering	clustering	ADJ
fbem-21457	92	20	effect	effect	NOUN
fbem-21457	92	21	was	be	AUX
fbem-21457	92	22	good	good	ADJ
fbem-21457	92	23	and	and	CCONJ
fbem-21457	92	24	reliable	reliable	ADJ
fbem-21457	92	25	.	.	PUNCT
fbem-21457	93	1	as	as	SCONJ
fbem-21457	93	2	shown	show	VERB
fbem-21457	93	3	in	in	ADP
fbem-21457	93	4	figure	figure	NOUN
fbem-21457	93	5	6	6	NUM
fbem-21457	93	6	,	,	PUNCT
fbem-21457	93	7	a	a	DET
fbem-21457	93	8	total	total	NOUN
fbem-21457	93	9	of	of	ADP
fbem-21457	93	10	20	20	NUM
fbem-21457	93	11	clusters	cluster	NOUN
fbem-21457	93	12	were	be	AUX
fbem-21457	93	13	obtained	obtain	VERB
fbem-21457	93	14	.	.	PUNCT
fbem-21457	94	1	the	the	DET
fbem-21457	94	2	20	20	NUM
fbem-21457	94	3	clusters	cluster	NOUN
fbem-21457	94	4	were	be	AUX
fbem-21457	94	5	analyzed	analyze	VERB
fbem-21457	94	6	according	accord	VERB
fbem-21457	94	7	to	to	ADP
fbem-21457	94	8	these	these	DET
fbem-21457	94	9	four	four	NUM
fbem-21457	94	10	directions	direction	NOUN
fbem-21457	94	11	as	as	SCONJ
fbem-21457	94	12	follows	follow	VERB
fbem-21457	94	13	:	:	PUNCT
fbem-21457	94	14	(	(	PUNCT
fbem-21457	94	15	1	1	X
fbem-21457	94	16	)	)	PUNCT
fbem-21457	94	17	research	research	NOUN
fbem-21457	94	18	subject	subject	NOUN
fbem-21457	94	19	.	.	PUNCT
fbem-21457	95	1	site	site	NOUN
fbem-21457	95	2	selection	selection	NOUN
fbem-21457	95	3	has	have	VERB
fbem-21457	95	4	an	an	DET
fbem-21457	95	5	impact	impact	NOUN
fbem-21457	95	6	on	on	ADP
fbem-21457	95	7	distribution	distribution	NOUN
fbem-21457	95	8	mode	mode	NOUN
fbem-21457	95	9	,	,	PUNCT
fbem-21457	95	10	distance	distance	NOUN
fbem-21457	95	11	,	,	PUNCT
fbem-21457	95	12	timeliness	timeliness	ADJ
fbem-21457	95	13	economic	economic	ADJ
fbem-21457	95	14	efficiency	efficiency	NOUN
fbem-21457	95	15	,	,	PUNCT
fbem-21457	95	16	etc	etc	X
fbem-21457	95	17	.	.	X
fbem-21457	96	1	in	in	ADP
fbem-21457	96	2	site	site	NOUN
fbem-21457	96	3	selection	selection	NOUN
fbem-21457	96	4	optimization	optimization	NOUN
fbem-21457	96	5	,	,	PUNCT
fbem-21457	96	6	the	the	DET
fbem-21457	96	7	main	main	ADJ
fbem-21457	96	8	body	body	NOUN
fbem-21457	96	9	of	of	ADP
fbem-21457	96	10	the	the	DET
fbem-21457	96	11	distribution	distribution	NOUN
fbem-21457	96	12	center	center	NOUN
fbem-21457	96	13	should	should	AUX
fbem-21457	96	14	be	be	AUX
fbem-21457	96	15	ensured	ensure	VERB
fbem-21457	96	16	,	,	PUNCT
fbem-21457	96	17	fully	fully	ADV
fbem-21457	96	18	combining	combine	VERB
fbem-21457	96	19	the	the	DET
fbem-21457	96	20	different	different	ADJ
fbem-21457	96	21	directions	direction	NOUN
fbem-21457	96	22	of	of	ADP
fbem-21457	96	23	the	the	DET
fbem-21457	96	24	military	military	NOUN
fbem-21457	96	25	,	,	PUNCT
fbem-21457	96	26	medicine	medicine	NOUN
fbem-21457	96	27	,	,	PUNCT
fbem-21457	96	28	cold	cold	ADJ
fbem-21457	96	29	chain	chain	NOUN
fbem-21457	96	30	and	and	CCONJ
fbem-21457	96	31	emergency	emergency	NOUN
fbem-21457	96	32	response	response	NOUN
fbem-21457	96	33	,	,	PUNCT
fbem-21457	96	34	etc	etc	X
fbem-21457	96	35	.	.	X
fbem-21457	96	36	,	,	PUNCT
fbem-21457	96	37	and	and	CCONJ
fbem-21457	96	38	using	use	VERB
fbem-21457	96	39	a	a	DET
fbem-21457	96	40	variety	variety	NOUN
fbem-21457	96	41	of	of	ADP
fbem-21457	96	42	algorithms	algorithm	NOUN
fbem-21457	96	43	such	such	ADJ
fbem-21457	96	44	as	as	ADP
fbem-21457	96	45	multi	multi	ADJ
fbem-21457	96	46	-	-	ADJ
fbem-21457	96	47	criteria	criterion	NOUN
fbem-21457	96	48	decision	decision	NOUN
fbem-21457	96	49	-	-	PUNCT
fbem-21457	96	50	making	make	VERB
fbem-21457	96	51	methods	method	NOUN
fbem-21457	96	52	and	and	CCONJ
fbem-21457	96	53	heuristic	heuristic	ADJ
fbem-21457	96	54	algorithms	algorithm	NOUN
fbem-21457	96	55	to	to	PART
fbem-21457	96	56	select	select	VERB
fbem-21457	96	57	the	the	DET
fbem-21457	96	58	optimal	optimal	ADJ
fbem-21457	96	59	location	location	NOUN
fbem-21457	96	60	of	of	ADP
fbem-21457	96	61	the	the	DET
fbem-21457	96	62	center	center	NOUN
fbem-21457	96	63	.	.	PUNCT
fbem-21457	97	1	(	(	PUNCT
fbem-21457	97	2	2	2	X
fbem-21457	97	3	)	)	PUNCT
fbem-21457	97	4	site	site	NOUN
fbem-21457	97	5	selection	selection	NOUN
fbem-21457	97	6	influencing	influence	VERB
fbem-21457	97	7	factors	factor	NOUN
fbem-21457	97	8	.	.	PUNCT
fbem-21457	98	1	the	the	DET
fbem-21457	98	2	site	site	NOUN
fbem-21457	98	3	selection	selection	NOUN
fbem-21457	98	4	influencing	influence	VERB
fbem-21457	98	5	factors	factor	NOUN
fbem-21457	98	6	can	can	AUX
fbem-21457	98	7	be	be	AUX
fbem-21457	98	8	divided	divide	VERB
fbem-21457	98	9	into	into	ADP
fbem-21457	98	10	the	the	DET
fbem-21457	98	11	following	follow	VERB
fbem-21457	98	12	three	three	NUM
fbem-21457	98	13	:	:	PUNCT
fbem-21457	98	14	the	the	DET
fbem-21457	98	15	first	first	ADJ
fbem-21457	98	16	is	be	AUX
fbem-21457	98	17	economic	economic	ADJ
fbem-21457	98	18	factors	factor	NOUN
fbem-21457	98	19	,	,	PUNCT
fbem-21457	98	20	including	include	VERB
fbem-21457	98	21	upfront	upfront	ADJ
fbem-21457	98	22	land	land	NOUN
fbem-21457	98	23	costs	cost	NOUN
fbem-21457	98	24	,	,	PUNCT
fbem-21457	98	25	construction	construction	NOUN
fbem-21457	98	26	costs	cost	NOUN
fbem-21457	98	27	,	,	PUNCT
fbem-21457	98	28	transportation	transportation	NOUN
fbem-21457	98	29	costs	cost	NOUN
fbem-21457	98	30	,	,	PUNCT
fbem-21457	98	31	and	and	CCONJ
fbem-21457	98	32	labor	labor	NOUN
fbem-21457	98	33	costs	cost	NOUN
fbem-21457	98	34	.	.	PUNCT
fbem-21457	99	1	the	the	DET
fbem-21457	99	2	second	second	NOUN
fbem-21457	99	3	is	be	AUX
fbem-21457	99	4	the	the	DET
fbem-21457	99	5	transportation	transportation	NOUN
fbem-21457	99	6	factor	factor	NOUN
fbem-21457	99	7	,	,	PUNCT
fbem-21457	99	8	which	which	PRON
fbem-21457	99	9	mainly	mainly	ADV
fbem-21457	99	10	considers	consider	VERB
fbem-21457	99	11	the	the	DET
fbem-21457	99	12	accessibility	accessibility	NOUN
fbem-21457	99	13	of	of	ADP
fbem-21457	99	14	transportation	transportation	NOUN
fbem-21457	99	15	;	;	PUNCT
fbem-21457	99	16	finally	finally	ADV
fbem-21457	99	17	,	,	PUNCT
fbem-21457	99	18	there	there	PRON
fbem-21457	99	19	are	be	VERB
fbem-21457	99	20	social	social	ADJ
fbem-21457	99	21	factors	factor	NOUN
fbem-21457	99	22	,	,	PUNCT
fbem-21457	99	23	and	and	CCONJ
fbem-21457	99	24	the	the	DET
fbem-21457	99	25	selected	select	VERB
fbem-21457	99	26	site	site	NOUN
fbem-21457	99	27	should	should	AUX
fbem-21457	99	28	have	have	VERB
fbem-21457	99	29	a	a	DET
fbem-21457	99	30	wide	wide	ADJ
fbem-21457	99	31	range	range	NOUN
fbem-21457	99	32	of	of	ADP
fbem-21457	99	33	services	service	NOUN
fbem-21457	99	34	,	,	PUNCT
fbem-21457	99	35	complete	complete	ADJ
fbem-21457	99	36	public	public	ADJ
fbem-21457	99	37	infrastructure	infrastructure	NOUN
fbem-21457	99	38	,	,	PUNCT
fbem-21457	99	39	and	and	CCONJ
fbem-21457	99	40	a	a	DET
fbem-21457	99	41	high	high	ADJ
fbem-21457	99	42	degree	degree	NOUN
fbem-21457	99	43	of	of	ADP
fbem-21457	99	44	environmental	environmental	ADJ
fbem-21457	99	45	protection	protection	NOUN
fbem-21457	99	46	.	.	PUNCT
fbem-21457	100	1	(	(	PUNCT
fbem-21457	100	2	3	3	X
fbem-21457	100	3	)	)	PUNCT
fbem-21457	100	4	purpose	purpose	NOUN
fbem-21457	100	5	of	of	ADP
fbem-21457	100	6	site	site	NOUN
fbem-21457	100	7	selection	selection	NOUN
fbem-21457	100	8	.	.	PUNCT
fbem-21457	101	1	site	site	NOUN
fbem-21457	101	2	selection	selection	NOUN
fbem-21457	101	3	can	can	AUX
fbem-21457	101	4	better	well	ADV
fbem-21457	101	5	plan	plan	VERB
fbem-21457	101	6	the	the	DET
fbem-21457	101	7	logistics	logistic	NOUN
fbem-21457	101	8	distribution	distribution	NOUN
fbem-21457	101	9	network	network	NOUN
fbem-21457	101	10	so	so	SCONJ
fbem-21457	101	11	that	that	SCONJ
fbem-21457	101	12	the	the	DET
fbem-21457	101	13	dispersed	disperse	VERB
fbem-21457	101	14	mode	mode	NOUN
fbem-21457	101	15	of	of	ADP
fbem-21457	101	16	transportation	transportation	NOUN
fbem-21457	101	17	becomes	become	VERB
fbem-21457	101	18	centralized	centralized	ADJ
fbem-21457	101	19	.	.	PUNCT
fbem-21457	102	1	distribution	distribution	NOUN
fbem-21457	102	2	centers	center	NOUN
fbem-21457	102	3	can	can	AUX
fbem-21457	102	4	promote	promote	VERB
fbem-21457	102	5	the	the	DET
fbem-21457	102	6	coordination	coordination	NOUN
fbem-21457	102	7	between	between	ADP
fbem-21457	102	8	the	the	DET
fbem-21457	102	9	nodes	node	NOUN
fbem-21457	102	10	of	of	ADP
fbem-21457	102	11	logistics	logistic	NOUN
fbem-21457	102	12	,	,	PUNCT
fbem-21457	102	13	and	and	CCONJ
fbem-21457	102	14	improve	improve	VERB
fbem-21457	102	15	resource	resource	NOUN
fbem-21457	102	16	integration	integration	NOUN
fbem-21457	102	17	and	and	CCONJ
fbem-21457	102	18	resource	resource	NOUN
fbem-21457	102	19	utilization	utilization	NOUN
fbem-21457	102	20	efficiency	efficiency	NOUN
fbem-21457	102	21	.	.	PUNCT
fbem-21457	103	1	(	(	PUNCT
fbem-21457	103	2	4	4	X
fbem-21457	103	3	)	)	PUNCT
fbem-21457	103	4	site	site	NOUN
fbem-21457	103	5	selection	selection	NOUN
fbem-21457	103	6	methods	method	NOUN
fbem-21457	103	7	.	.	PUNCT
fbem-21457	104	1	methods	method	NOUN
fbem-21457	104	2	can	can	AUX
fbem-21457	104	3	be	be	AUX
fbem-21457	104	4	broadly	broadly	ADV
fbem-21457	104	5	divided	divide	VERB
fbem-21457	104	6	into	into	ADP
fbem-21457	104	7	qualitative	qualitative	ADJ
fbem-21457	104	8	and	and	CCONJ
fbem-21457	104	9	quantitative	quantitative	ADJ
fbem-21457	104	10	methods	method	NOUN
fbem-21457	104	11	.	.	PUNCT
fbem-21457	105	1	the	the	DET
fbem-21457	105	2	most	most	ADV
fbem-21457	105	3	widely	widely	ADV
fbem-21457	105	4	used	use	VERB
fbem-21457	105	5	qualitative	qualitative	ADJ
fbem-21457	105	6	analysis	analysis	NOUN
fbem-21457	105	7	methods	method	NOUN
fbem-21457	105	8	are	be	AUX
fbem-21457	105	9	the	the	DET
fbem-21457	105	10	delphi	delphi	NOUN
fbem-21457	105	11	method	method	NOUN
fbem-21457	105	12	and	and	CCONJ
fbem-21457	105	13	expert	expert	ADJ
fbem-21457	105	14	scoring	scoring	NOUN
fbem-21457	105	15	method	method	NOUN
fbem-21457	105	16	;	;	PUNCT
fbem-21457	105	17	quantitative	quantitative	ADJ
fbem-21457	105	18	methods	method	NOUN
fbem-21457	105	19	are	be	AUX
fbem-21457	105	20	divided	divide	VERB
fbem-21457	105	21	into	into	ADP
fbem-21457	105	22	two	two	NUM
fbem-21457	105	23	types	type	NOUN
fbem-21457	105	24	of	of	ADP
fbem-21457	105	25	continuous	continuous	ADJ
fbem-21457	105	26	-	-	PUNCT
fbem-21457	105	27	discrete	discrete	NOUN
fbem-21457	105	28	.	.	PUNCT
fbem-21457	106	1	figure	figure	NOUN
fbem-21457	106	2	5	5	NUM
fbem-21457	106	3	.	.	PUNCT
fbem-21457	106	4	keyword	keyword	NOUN
fbem-21457	106	5	clustering	clustering	NOUN
fbem-21457	106	6	map	map	NOUN
fbem-21457	106	7	4.5	4.5	NUM
fbem-21457	106	8	.	.	PUNCT
fbem-21457	107	1	analysis	analysis	NOUN
fbem-21457	107	2	of	of	ADP
fbem-21457	107	3	distribution	distribution	NOUN
fbem-21457	107	4	center	center	NOUN
fbem-21457	107	5	siting	siting	NOUN
fbem-21457	107	6	research	research	NOUN
fbem-21457	107	7	history	history	NOUN
fbem-21457	107	8	analyzing	analyze	VERB
fbem-21457	107	9	the	the	DET
fbem-21457	107	10	evolution	evolution	NOUN
fbem-21457	107	11	path	path	NOUN
fbem-21457	107	12	not	not	PART
fbem-21457	107	13	only	only	ADV
fbem-21457	107	14	enables	enable	VERB
fbem-21457	107	15	researchers	researcher	NOUN
fbem-21457	107	16	to	to	PART
fbem-21457	107	17	make	make	VERB
fbem-21457	107	18	clearer	clear	ADJ
fbem-21457	107	19	the	the	DET
fbem-21457	107	20	development	development	NOUN
fbem-21457	107	21	background	background	NOUN
fbem-21457	107	22	and	and	CCONJ
fbem-21457	107	23	direction	direction	NOUN
fbem-21457	107	24	of	of	ADP
fbem-21457	107	25	the	the	DET
fbem-21457	107	26	research	research	NOUN
fbem-21457	107	27	topic	topic	NOUN
fbem-21457	107	28	but	but	CCONJ
fbem-21457	107	29	also	also	ADV
fbem-21457	107	30	predicts	predict	VERB
fbem-21457	107	31	the	the	DET
fbem-21457	107	32	research	research	NOUN
fbem-21457	107	33	trend	trend	NOUN
fbem-21457	107	34	of	of	ADP
fbem-21457	107	35	the	the	DET
fbem-21457	107	36	topic	topic	NOUN
fbem-21457	107	37	.	.	PUNCT
fbem-21457	108	1	the	the	DET
fbem-21457	108	2	time	time	NOUN
fbem-21457	108	3	view	view	NOUN
fbem-21457	108	4	function	function	NOUN
fbem-21457	108	5	of	of	ADP
fbem-21457	108	6	citespace	citespace	NOUN
fbem-21457	108	7	can	can	AUX
fbem-21457	108	8	visualize	visualize	VERB
fbem-21457	108	9	and	and	CCONJ
fbem-21457	108	10	analyze	analyze	VERB
fbem-21457	108	11	this	this	DET
fbem-21457	108	12	evolution	evolution	NOUN
fbem-21457	108	13	path	path	NOUN
fbem-21457	108	14	.	.	PUNCT
fbem-21457	109	1	figure	figure	VERB
fbem-21457	109	2	6	6	NUM
fbem-21457	109	3	.	.	PUNCT
fbem-21457	110	1	keyword	keyword	NOUN
fbem-21457	110	2	time	time	NOUN
fbem-21457	110	3	zone	zone	NOUN
fbem-21457	110	4	mapping	map	VERB
fbem-21457	110	5	325	325	NUM
fbem-21457	110	6	the	the	DET
fbem-21457	110	7	cluster	cluster	NOUN
fbem-21457	110	8	labels	label	NOUN
fbem-21457	110	9	are	be	AUX
fbem-21457	110	10	the	the	DET
fbem-21457	110	11	vertical	vertical	ADJ
fbem-21457	110	12	axis	axis	NOUN
fbem-21457	110	13	and	and	CCONJ
fbem-21457	110	14	the	the	DET
fbem-21457	110	15	time	time	NOUN
fbem-21457	110	16	years	year	NOUN
fbem-21457	110	17	of	of	ADP
fbem-21457	110	18	the	the	DET
fbem-21457	110	19	keywords	keyword	NOUN
fbem-21457	110	20	are	be	AUX
fbem-21457	110	21	the	the	DET
fbem-21457	110	22	horizontal	horizontal	ADJ
fbem-21457	110	23	axis	axis	NOUN
fbem-21457	110	24	to	to	PART
fbem-21457	110	25	get	get	VERB
fbem-21457	110	26	the	the	DET
fbem-21457	110	27	time	time	NOUN
fbem-21457	110	28	mapping	mapping	NOUN
fbem-21457	110	29	of	of	ADP
fbem-21457	110	30	keyword	keyword	NOUN
fbem-21457	110	31	clusters	cluster	NOUN
fbem-21457	110	32	for	for	ADP
fbem-21457	110	33	the	the	DET
fbem-21457	110	34	location	location	NOUN
fbem-21457	110	35	of	of	ADP
fbem-21457	110	36	logistics	logistic	NOUN
fbem-21457	110	37	and	and	CCONJ
fbem-21457	110	38	distribution	distribution	NOUN
fbem-21457	110	39	centers	center	NOUN
fbem-21457	110	40	.	.	PUNCT
fbem-21457	111	1	in	in	ADP
fbem-21457	111	2	this	this	DET
fbem-21457	111	3	paper	paper	NOUN
fbem-21457	111	4	,	,	PUNCT
fbem-21457	111	5	the	the	DET
fbem-21457	111	6	first	first	ADJ
fbem-21457	111	7	15	15	NUM
fbem-21457	111	8	clusters	cluster	NOUN
fbem-21457	111	9	are	be	AUX
fbem-21457	111	10	intercepted	intercept	VERB
fbem-21457	111	11	to	to	PART
fbem-21457	111	12	show	show	VERB
fbem-21457	111	13	the	the	DET
fbem-21457	111	14	development	development	NOUN
fbem-21457	111	15	of	of	ADP
fbem-21457	111	16	keywords	keyword	NOUN
fbem-21457	111	17	in	in	ADP
fbem-21457	111	18	each	each	DET
fbem-21457	111	19	cluster	cluster	NOUN
fbem-21457	111	20	.	.	PUNCT
fbem-21457	112	1	the	the	DET
fbem-21457	112	2	keywords	keyword	NOUN
fbem-21457	112	3	with	with	ADP
fbem-21457	112	4	larger	large	ADJ
fbem-21457	112	5	nodes	node	NOUN
fbem-21457	112	6	are	be	AUX
fbem-21457	112	7	concentrated	concentrate	VERB
fbem-21457	112	8	from	from	ADP
fbem-21457	112	9	1998	1998	NUM
fbem-21457	112	10	to	to	ADP
fbem-21457	112	11	2005	2005	NUM
fbem-21457	112	12	,	,	PUNCT
fbem-21457	112	13	and	and	CCONJ
fbem-21457	112	14	they	they	PRON
fbem-21457	112	15	are	be	AUX
fbem-21457	112	16	:	:	PUNCT
fbem-21457	112	17	"	"	PUNCT
fbem-21457	112	18	distribution	distribution	NOUN
fbem-21457	112	19	center	center	NOUN
fbem-21457	112	20	"	"	PUNCT
fbem-21457	112	21	,	,	PUNCT
fbem-21457	112	22	"	"	PUNCT
fbem-21457	112	23	site	site	NOUN
fbem-21457	112	24	selection	selection	NOUN
fbem-21457	112	25	"	"	PUNCT
fbem-21457	112	26	,	,	PUNCT
fbem-21457	112	27	"	"	PUNCT
fbem-21457	112	28	genetic	genetic	ADJ
fbem-21457	112	29	algorithm	algorithm	NOUN
fbem-21457	112	30	"	"	PUNCT
fbem-21457	112	31	and	and	CCONJ
fbem-21457	112	32	so	so	ADV
fbem-21457	112	33	on	on	ADV
fbem-21457	112	34	.	.	PUNCT
fbem-21457	113	1	both	both	CCONJ
fbem-21457	113	2	the	the	DET
fbem-21457	113	3	"	"	PUNCT
fbem-21457	113	4	genetic	genetic	ADJ
fbem-21457	113	5	algorithm	algorithm	NOUN
fbem-21457	113	6	"	"	PUNCT
fbem-21457	113	7	and	and	CCONJ
fbem-21457	113	8	"	"	PUNCT
fbem-21457	113	9	center	center	NOUN
fbem-21457	113	10	of	of	ADP
fbem-21457	113	11	gravity	gravity	NOUN
fbem-21457	113	12	method	method	NOUN
fbem-21457	113	13	"	"	PUNCT
fbem-21457	113	14	are	be	AUX
fbem-21457	113	15	research	research	NOUN
fbem-21457	113	16	methods	method	NOUN
fbem-21457	113	17	on	on	ADP
fbem-21457	113	18	site	site	NOUN
fbem-21457	113	19	selection	selection	NOUN
fbem-21457	113	20	,	,	PUNCT
fbem-21457	113	21	so	so	SCONJ
fbem-21457	113	22	it	it	PRON
fbem-21457	113	23	can	can	AUX
fbem-21457	113	24	be	be	AUX
fbem-21457	113	25	seen	see	VERB
fbem-21457	113	26	that	that	SCONJ
fbem-21457	113	27	the	the	DET
fbem-21457	113	28	early	early	ADJ
fbem-21457	113	29	research	research	NOUN
fbem-21457	113	30	focuses	focus	VERB
fbem-21457	113	31	on	on	ADP
fbem-21457	113	32	the	the	DET
fbem-21457	113	33	study	study	NOUN
fbem-21457	113	34	of	of	ADP
fbem-21457	113	35	site	site	NOUN
fbem-21457	113	36	selection	selection	NOUN
fbem-21457	113	37	methods	method	NOUN
fbem-21457	113	38	.	.	PUNCT
fbem-21457	114	1	the	the	DET
fbem-21457	114	2	high	high	ADJ
fbem-21457	114	3	-	-	PUNCT
fbem-21457	114	4	frequency	frequency	NOUN
fbem-21457	114	5	keywords	keyword	NOUN
fbem-21457	114	6	from	from	ADP
fbem-21457	114	7	2005	2005	NUM
fbem-21457	114	8	to	to	ADP
fbem-21457	114	9	2015	2015	NUM
fbem-21457	114	10	are	be	AUX
fbem-21457	114	11	:	:	PUNCT
fbem-21457	114	12	"	"	PUNCT
fbem-21457	114	13	ecommerce	ecommerce	NOUN
fbem-21457	114	14	"	"	PUNCT
fbem-21457	114	15	,	,	PUNCT
fbem-21457	114	16	"	"	PUNCT
fbem-21457	114	17	reverse	reverse	ADJ
fbem-21457	114	18	logistics	logistic	NOUN
fbem-21457	114	19	"	"	PUNCT
fbem-21457	114	20	,	,	PUNCT
fbem-21457	114	21	"	"	PUNCT
fbem-21457	114	22	logistics	logistics	NOUN
fbem-21457	114	23	park	park	NOUN
fbem-21457	114	24	"	"	PUNCT
fbem-21457	114	25	and	and	CCONJ
fbem-21457	114	26	so	so	ADV
fbem-21457	114	27	on	on	ADV
fbem-21457	114	28	.	.	PUNCT
fbem-21457	115	1	the	the	DET
fbem-21457	115	2	high	high	ADJ
fbem-21457	115	3	-	-	PUNCT
fbem-21457	115	4	frequency	frequency	NOUN
fbem-21457	115	5	keywords	keyword	NOUN
fbem-21457	115	6	are	be	AUX
fbem-21457	115	7	relatively	relatively	ADV
fbem-21457	115	8	evenly	evenly	ADV
fbem-21457	115	9	distributed	distribute	VERB
fbem-21457	115	10	in	in	ADP
fbem-21457	115	11	each	each	DET
fbem-21457	115	12	category	category	NOUN
fbem-21457	115	13	,	,	PUNCT
fbem-21457	115	14	indicating	indicate	VERB
fbem-21457	115	15	that	that	SCONJ
fbem-21457	115	16	distribution	distribution	NOUN
fbem-21457	115	17	center	center	NOUN
fbem-21457	115	18	seating	seating	NOUN
fbem-21457	115	19	has	have	AUX
fbem-21457	115	20	developed	develop	VERB
fbem-21457	115	21	at	at	ADP
fbem-21457	115	22	a	a	DET
fbem-21457	115	23	high	high	ADJ
fbem-21457	115	24	speed	speed	NOUN
fbem-21457	115	25	in	in	ADP
fbem-21457	115	26	all	all	DET
fbem-21457	115	27	directions	direction	NOUN
fbem-21457	115	28	during	during	ADP
fbem-21457	115	29	this	this	DET
fbem-21457	115	30	period	period	NOUN
fbem-21457	115	31	.	.	PUNCT
fbem-21457	116	1	in	in	ADP
fbem-21457	116	2	2015	2015	NUM
fbem-21457	116	3	-	-	SYM
fbem-21457	116	4	2023	2023	NUM
fbem-21457	116	5	,	,	PUNCT
fbem-21457	116	6	only	only	ADV
fbem-21457	116	7	three	three	NUM
fbem-21457	116	8	keywords	keyword	NOUN
fbem-21457	116	9	,	,	PUNCT
fbem-21457	116	10	"	"	PUNCT
fbem-21457	116	11	site	site	NOUN
fbem-21457	116	12	allocation	allocation	NOUN
fbem-21457	116	13	"	"	PUNCT
fbem-21457	116	14	,	,	PUNCT
fbem-21457	116	15	"	"	PUNCT
fbem-21457	116	16	path	path	NOUN
fbem-21457	116	17	optimization	optimization	NOUN
fbem-21457	116	18	"	"	PUNCT
fbem-21457	116	19	and	and	CCONJ
fbem-21457	116	20	"	"	PUNCT
fbem-21457	116	21	site	site	NOUN
fbem-21457	116	22	path	path	NOUN
fbem-21457	116	23	"	"	PUNCT
fbem-21457	116	24	,	,	PUNCT
fbem-21457	116	25	appear	appear	VERB
fbem-21457	116	26	in	in	ADP
fbem-21457	116	27	three	three	NUM
fbem-21457	116	28	clusters	cluster	NOUN
fbem-21457	116	29	,	,	PUNCT
fbem-21457	116	30	indicating	indicate	VERB
fbem-21457	116	31	that	that	SCONJ
fbem-21457	116	32	in	in	ADP
fbem-21457	116	33	recent	recent	ADJ
fbem-21457	116	34	years	year	NOUN
fbem-21457	116	35	,	,	PUNCT
fbem-21457	116	36	the	the	DET
fbem-21457	116	37	field	field	NOUN
fbem-21457	116	38	has	have	AUX
fbem-21457	116	39	this	this	PRON
fbem-21457	116	40	indicates	indicate	VERB
fbem-21457	116	41	that	that	SCONJ
fbem-21457	116	42	the	the	DET
fbem-21457	116	43	field	field	NOUN
fbem-21457	116	44	has	have	AUX
fbem-21457	116	45	been	be	AUX
fbem-21457	116	46	devoted	devote	VERB
fbem-21457	116	47	to	to	ADP
fbem-21457	116	48	the	the	DET
fbem-21457	116	49	direction	direction	NOUN
fbem-21457	116	50	of	of	ADP
fbem-21457	116	51	joint	joint	ADJ
fbem-21457	116	52	site	site	NOUN
fbem-21457	116	53	-	-	PUNCT
fbem-21457	116	54	path	path	NOUN
fbem-21457	116	55	optimization	optimization	NOUN
fbem-21457	116	56	in	in	ADP
fbem-21457	116	57	recent	recent	ADJ
fbem-21457	116	58	years	year	NOUN
fbem-21457	116	59	.	.	PUNCT
fbem-21457	117	1	5	5	X
fbem-21457	117	2	.	.	X
fbem-21457	117	3	conclusion	conclusion	NOUN
fbem-21457	117	4	whether	whether	SCONJ
fbem-21457	117	5	the	the	DET
fbem-21457	117	6	distribution	distribution	NOUN
fbem-21457	117	7	center	center	NOUN
fbem-21457	117	8	site	site	NOUN
fbem-21457	117	9	selection	selection	NOUN
fbem-21457	117	10	is	be	AUX
fbem-21457	117	11	reasonable	reasonable	ADJ
fbem-21457	117	12	or	or	CCONJ
fbem-21457	117	13	not	not	PART
fbem-21457	117	14	determines	determine	VERB
fbem-21457	117	15	whether	whether	SCONJ
fbem-21457	117	16	the	the	DET
fbem-21457	117	17	logistics	logistic	NOUN
fbem-21457	117	18	system	system	NOUN
fbem-21457	117	19	can	can	AUX
fbem-21457	117	20	give	give	VERB
fbem-21457	117	21	full	full	ADJ
fbem-21457	117	22	play	play	NOUN
fbem-21457	117	23	to	to	ADP
fbem-21457	117	24	its	its	PRON
fbem-21457	117	25	functions	function	NOUN
fbem-21457	117	26	,	,	PUNCT
fbem-21457	117	27	and	and	CCONJ
fbem-21457	117	28	the	the	DET
fbem-21457	117	29	study	study	NOUN
fbem-21457	117	30	of	of	ADP
fbem-21457	117	31	distribution	distribution	NOUN
fbem-21457	117	32	center	center	NOUN
fbem-21457	117	33	site	site	NOUN
fbem-21457	117	34	selection	selection	NOUN
fbem-21457	117	35	is	be	AUX
fbem-21457	117	36	of	of	ADP
fbem-21457	117	37	great	great	ADJ
fbem-21457	117	38	significance	significance	NOUN
fbem-21457	117	39	to	to	ADP
fbem-21457	117	40	both	both	DET
fbem-21457	117	41	enterprises	enterprise	NOUN
fbem-21457	117	42	and	and	CCONJ
fbem-21457	117	43	society	society	NOUN
fbem-21457	117	44	.	.	PUNCT
fbem-21457	118	1	in	in	ADP
fbem-21457	118	2	this	this	DET
fbem-21457	118	3	paper	paper	NOUN
fbem-21457	118	4	,	,	PUNCT
fbem-21457	118	5	we	we	PRON
fbem-21457	118	6	used	use	VERB
fbem-21457	118	7	citespace	citespace	NOUN
fbem-21457	118	8	to	to	PART
fbem-21457	118	9	visualize	visualize	VERB
fbem-21457	118	10	and	and	CCONJ
fbem-21457	118	11	analyze	analyze	VERB
fbem-21457	118	12	the	the	DET
fbem-21457	118	13	literature	literature	NOUN
fbem-21457	118	14	on	on	ADP
fbem-21457	118	15	distribution	distribution	NOUN
fbem-21457	118	16	center	center	NOUN
fbem-21457	118	17	siting	siting	NOUN
fbem-21457	118	18	in	in	ADP
fbem-21457	118	19	the	the	DET
fbem-21457	118	20	knowledge	knowledge	NOUN
fbem-21457	118	21	network	network	NOUN
fbem-21457	118	22	database	database	NOUN
fbem-21457	118	23	,	,	PUNCT
fbem-21457	118	24	and	and	CCONJ
fbem-21457	118	25	comprehensively	comprehensively	ADV
fbem-21457	118	26	analyzed	analyze	VERB
fbem-21457	118	27	the	the	DET
fbem-21457	118	28	research	research	NOUN
fbem-21457	118	29	hotspots	hotspot	NOUN
fbem-21457	118	30	and	and	CCONJ
fbem-21457	118	31	the	the	DET
fbem-21457	118	32	development	development	NOUN
fbem-21457	118	33	process	process	NOUN
fbem-21457	118	34	in	in	ADP
fbem-21457	118	35	the	the	DET
fbem-21457	118	36	field	field	NOUN
fbem-21457	118	37	in	in	ADP
fbem-21457	118	38	the	the	DET
fbem-21457	118	39	past	past	ADJ
fbem-21457	118	40	two	two	NUM
fbem-21457	118	41	decades	decade	NOUN
fbem-21457	118	42	in	in	ADP
fbem-21457	118	43	terms	term	NOUN
fbem-21457	118	44	of	of	ADP
fbem-21457	118	45	the	the	DET
fbem-21457	118	46	number	number	NOUN
fbem-21457	118	47	of	of	ADP
fbem-21457	118	48	articles	article	NOUN
fbem-21457	118	49	,	,	PUNCT
fbem-21457	118	50	core	core	NOUN
fbem-21457	118	51	research	research	NOUN
fbem-21457	118	52	authors	author	NOUN
fbem-21457	118	53	and	and	CCONJ
fbem-21457	118	54	institutions	institution	NOUN
fbem-21457	118	55	,	,	PUNCT
fbem-21457	118	56	keyword	keyword	NOUN
fbem-21457	118	57	cooccurrence	cooccurrence	NOUN
fbem-21457	118	58	and	and	CCONJ
fbem-21457	118	59	clustering	clustering	NOUN
fbem-21457	118	60	,	,	PUNCT
fbem-21457	118	61	and	and	CCONJ
fbem-21457	118	62	timeline	timeline	NOUN
fbem-21457	118	63	charts	chart	NOUN
fbem-21457	118	64	,	,	PUNCT
fbem-21457	118	65	etc	etc	X
fbem-21457	118	66	.	.	X
fbem-21457	118	67	for	for	ADP
fbem-21457	118	68	the	the	DET
fbem-21457	118	69	siting	siting	NOUN
fbem-21457	118	70	method	method	NOUN
fbem-21457	118	71	,	,	PUNCT
fbem-21457	118	72	the	the	DET
fbem-21457	118	73	combination	combination	NOUN
fbem-21457	118	74	of	of	ADP
fbem-21457	118	75	multiple	multiple	ADJ
fbem-21457	118	76	siting	siting	NOUN
fbem-21457	118	77	methods	method	NOUN
fbem-21457	118	78	is	be	AUX
fbem-21457	118	79	a	a	DET
fbem-21457	118	80	major	major	ADJ
fbem-21457	118	81	trend	trend	NOUN
fbem-21457	118	82	.	.	PUNCT
fbem-21457	119	1	for	for	ADP
fbem-21457	119	2	the	the	DET
fbem-21457	119	3	site	site	NOUN
fbem-21457	119	4	selection	selection	NOUN
fbem-21457	119	5	method	method	NOUN
fbem-21457	119	6	,	,	PUNCT
fbem-21457	119	7	the	the	DET
fbem-21457	119	8	combination	combination	NOUN
fbem-21457	119	9	of	of	ADP
fbem-21457	119	10	multiple	multiple	ADJ
fbem-21457	119	11	site	site	NOUN
fbem-21457	119	12	selection	selection	NOUN
fbem-21457	119	13	methods	method	NOUN
fbem-21457	119	14	is	be	AUX
fbem-21457	119	15	a	a	DET
fbem-21457	119	16	general	general	ADJ
fbem-21457	119	17	trend	trend	NOUN
fbem-21457	119	18	,	,	PUNCT
fbem-21457	119	19	and	and	CCONJ
fbem-21457	119	20	future	future	ADJ
fbem-21457	119	21	research	research	NOUN
fbem-21457	119	22	on	on	ADP
fbem-21457	119	23	site	site	NOUN
fbem-21457	119	24	selection	selection	NOUN
fbem-21457	119	25	will	will	AUX
fbem-21457	119	26	no	no	ADV
fbem-21457	119	27	longer	long	ADV
fbem-21457	119	28	be	be	AUX
fbem-21457	119	29	limited	limit	VERB
fbem-21457	119	30	to	to	ADP
fbem-21457	119	31	a	a	DET
fbem-21457	119	32	single	single	ADJ
fbem-21457	119	33	site	site	NOUN
fbem-21457	119	34	selection	selection	NOUN
fbem-21457	119	35	but	but	CCONJ
fbem-21457	119	36	will	will	AUX
fbem-21457	119	37	combine	combine	VERB
fbem-21457	119	38	site	site	NOUN
fbem-21457	119	39	selection	selection	NOUN
fbem-21457	119	40	with	with	ADP
fbem-21457	119	41	path	path	NOUN
fbem-21457	119	42	optimization	optimization	NOUN
fbem-21457	119	43	,	,	PUNCT
fbem-21457	119	44	to	to	PART
fbem-21457	119	45	better	well	ADV
fbem-21457	119	46	reduce	reduce	VERB
fbem-21457	119	47	logistics	logistic	NOUN
fbem-21457	119	48	costs	cost	NOUN
fbem-21457	119	49	.	.	PUNCT
fbem-21457	120	1	in	in	ADP
fbem-21457	120	2	addition	addition	NOUN
fbem-21457	120	3	,	,	PUNCT
fbem-21457	120	4	future	future	ADJ
fbem-21457	120	5	research	research	NOUN
fbem-21457	120	6	on	on	ADP
fbem-21457	120	7	site	site	NOUN
fbem-21457	120	8	selection	selection	NOUN
fbem-21457	120	9	will	will	AUX
fbem-21457	120	10	also	also	ADV
fbem-21457	120	11	make	make	VERB
fbem-21457	120	12	full	full	ADJ
fbem-21457	120	13	use	use	NOUN
fbem-21457	120	14	of	of	ADP
fbem-21457	120	15	big	big	ADJ
fbem-21457	120	16	data	datum	NOUN
fbem-21457	120	17	to	to	PART
fbem-21457	120	18	improve	improve	VERB
fbem-21457	120	19	the	the	DET
fbem-21457	120	20	scientific	scientific	ADJ
fbem-21457	120	21	feasibility	feasibility	NOUN
fbem-21457	120	22	of	of	ADP
fbem-21457	120	23	site	site	NOUN
fbem-21457	120	24	selection	selection	NOUN
fbem-21457	120	25	.	.	PUNCT
fbem-21457	121	1	references	reference	NOUN
fbem-21457	121	2	[	[	X
fbem-21457	121	3	1	1	X
fbem-21457	121	4	]	]	PUNCT
fbem-21457	121	5	weber	weber	PROPN
fbem-21457	121	6	a.	a.	PROPN
fbem-21457	121	7	alfred	alfred	PROPN
fbem-21457	121	8	weber	weber	PROPN
fbem-21457	121	9	's	's	PART
fbem-21457	121	10	theory	theory	NOUN
fbem-21457	121	11	of	of	ADP
fbem-21457	121	12	the	the	DET
fbem-21457	121	13	location	location	NOUN
fbem-21457	121	14	of	of	ADP
fbem-21457	121	15	industries[m].the	industries[m].the	DET
fbem-21457	121	16	university	university	PROPN
fbem-21457	121	17	of	of	ADP
fbem-21457	121	18	chicago	chicago	PROPN
fbem-21457	121	19	press,1909	press,1909	NOUN
fbem-21457	121	20	.	.	PUNCT
fbem-21457	122	1	[	[	X
fbem-21457	122	2	2	2	X
fbem-21457	122	3	]	]	PUNCT
fbem-21457	122	4	aikench.faeility	aikench.faeility	NOUN
fbem-21457	122	5	loeation	loeation	NOUN
fbem-21457	122	6	models	model	NOUN
fbem-21457	122	7	for	for	ADP
fbem-21457	122	8	distribution	distribution	NOUN
fbem-21457	122	9	plannig[m	plannig[m	NOUN
fbem-21457	122	10	]	]	PUNCT
fbem-21457	122	11	.	.	PUNCT
fbem-21457	123	1	eyropean	eyropean	PROPN
fbem-21457	123	2	journal	journal	PROPN
fbem-21457	123	3	of	of	ADP
fbem-21457	123	4	operational	operational	ADJ
fbem-21457	123	5	researeh	researeh	NOUN
fbem-21457	123	6	,	,	PUNCT
fbem-21457	123	7	1985	1985	NUM
fbem-21457	123	8	.	.	PUNCT
fbem-21457	124	1	[	[	X
fbem-21457	124	2	3	3	NUM
fbem-21457	124	3	]	]	SYM
fbem-21457	124	4	w.j.stevenso.produetion/operations	w.j.stevenso.produetion/operation	NOUN
fbem-21457	124	5	.managemen	.managemen	PRON
fbem-21457	124	6	riehard	riehard	PROPN
fbem-21457	124	7	d.irwinin	d.irwinin	PROPN
fbem-21457	124	8	,	,	PUNCT
fbem-21457	124	9	2008	2008	NUM
fbem-21457	124	10	.	.	PUNCT
fbem-21457	125	1	[	[	X
fbem-21457	125	2	4	4	X
fbem-21457	125	3	]	]	PUNCT
fbem-21457	125	4	changqing	changqe	VERB
fbem-21457	125	5	liu	liu	PROPN
fbem-21457	125	6	.	.	PUNCT
fbem-21457	126	1	research	research	NOUN
fbem-21457	126	2	on	on	ADP
fbem-21457	126	3	site	site	NOUN
fbem-21457	126	4	selection	selection	NOUN
fbem-21457	126	5	model	model	NOUN
fbem-21457	126	6	of	of	ADP
fbem-21457	126	7	express	express	ADJ
fbem-21457	126	8	distribution	distribution	NOUN
fbem-21457	126	9	center[j	center[j	NOUN
fbem-21457	126	10	]	]	PUNCT
fbem-21457	126	11	.	.	PUNCT
fbem-21457	127	1	logistics	logistic	NOUN
fbem-21457	127	2	technology	technology	NOUN
fbem-21457	127	3	,	,	PUNCT
fbem-21457	127	4	2012,31(21	2012,31(21	NUM
fbem-21457	127	5	):	):	PUNCT
fbem-21457	127	6	340342	340342	NUM
fbem-21457	128	1	+	+	SYM
fbem-21457	128	2	369	369	NUM
fbem-21457	128	3	[	[	PUNCT
fbem-21457	128	4	5	5	NUM
fbem-21457	128	5	]	]	X
fbem-21457	128	6	liu	liu	PROPN
fbem-21457	128	7	shanqiu	shanqiu	PROPN
fbem-21457	128	8	,	,	PUNCT
fbem-21457	128	9	fan	fan	PROPN
fbem-21457	128	10	bingpeng	bingpeng	PROPN
fbem-21457	128	11	.	.	PUNCT
fbem-21457	129	1	site	site	NOUN
fbem-21457	129	2	selection	selection	NOUN
fbem-21457	129	3	of	of	ADP
fbem-21457	129	4	express	express	ADJ
fbem-21457	129	5	logistics	logistic	NOUN
fbem-21457	129	6	distribution	distribution	NOUN
fbem-21457	129	7	center	center	NOUN
fbem-21457	129	8	based	base	VERB
fbem-21457	129	9	on	on	ADP
fbem-21457	129	10	genetic	genetic	ADJ
fbem-21457	129	11	algorithm[j	algorithm[j	PROPN
fbem-21457	129	12	]	]	PUNCT
fbem-21457	129	13	.	.	PUNCT
fbem-21457	130	1	journal	journal	PROPN
fbem-21457	130	2	of	of	ADP
fbem-21457	130	3	hunan	hunan	PROPN
fbem-21457	130	4	university	university	PROPN
fbem-21457	130	5	of	of	ADP
fbem-21457	130	6	technology,2021,35(5):70	technology,2021,35(5):70	PROPN
fbem-21457	130	7	-	-	PUNCT
fbem-21457	130	8	76	76	NUM
fbem-21457	130	9	.	.	PUNCT
fbem-21457	131	1	[	[	X
fbem-21457	131	2	6	6	NUM
fbem-21457	131	3	]	]	X
fbem-21457	131	4	liu	liu	PROPN
fbem-21457	131	5	juan	juan	PROPN
fbem-21457	131	6	,	,	PUNCT
fbem-21457	131	7	liu	liu	PROPN
fbem-21457	131	8	xiangwei	xiangwei	PROPN
fbem-21457	131	9	.	.	PUNCT
fbem-21457	132	1	research	research	NOUN
fbem-21457	132	2	on	on	ADP
fbem-21457	132	3	logistics	logistic	NOUN
fbem-21457	132	4	distribution	distribution	NOUN
fbem-21457	132	5	center	center	NOUN
fbem-21457	132	6	site	site	NOUN
fbem-21457	132	7	selection	selection	NOUN
fbem-21457	132	8	problem	problem	NOUN
fbem-21457	132	9	based	base	VERB
fbem-21457	132	10	on	on	ADP
fbem-21457	132	11	improved	improved	ADJ
fbem-21457	132	12	bp	bp	PROPN
fbem-21457	132	13	artificial	artificial	ADJ
fbem-21457	132	14	neural	neural	ADJ
fbem-21457	132	15	network[j	network[j	PROPN
fbem-21457	132	16	.	.	PUNCT
fbem-21457	133	1	journal	journal	PROPN
fbem-21457	133	2	of	of	ADP
fbem-21457	133	3	kashi	kashi	PROPN
fbem-21457	133	4	university,2018,39(06):1419	university,2018,39(06):1419	PROPN
fbem-21457	133	5	.	.	PUNCT
fbem-21457	134	1	[	[	X
fbem-21457	134	2	7	7	NUM
fbem-21457	134	3	]	]	PUNCT
fbem-21457	134	4	xu	xu	PROPN
fbem-21457	134	5	xiaoping	xiaoping	PROPN
fbem-21457	134	6	,	,	PUNCT
fbem-21457	134	7	shi	shi	PROPN
fbem-21457	134	8	xiting	xiting	PROPN
fbem-21457	134	9	.	.	PUNCT
fbem-21457	135	1	on	on	ADP
fbem-21457	135	2	the	the	DET
fbem-21457	135	3	simulation	simulation	NOUN
fbem-21457	135	4	of	of	ADP
fbem-21457	135	5	optimal	optimal	ADJ
fbem-21457	135	6	site	site	NOUN
fbem-21457	135	7	selection	selection	NOUN
fbem-21457	135	8	for	for	ADP
fbem-21457	135	9	logistics	logistic	NOUN
fbem-21457	135	10	distribution	distribution	NOUN
fbem-21457	135	11	center	center	NOUN
fbem-21457	135	12	supply	supply	NOUN
fbem-21457	135	13	and	and	CCONJ
fbem-21457	135	14	demand[j	demand[j	NOUN
fbem-21457	135	15	]	]	PUNCT
fbem-21457	135	16	.	.	PUNCT
fbem-21457	136	1	computer	computer	NOUN
fbem-21457	136	2	simulation,2018,35(10):345	simulation,2018,35(10):345	PROPN
fbem-21457	136	3	-	-	SYM
fbem-21457	136	4	349,423	349,423	NUM
fbem-21457	136	5	.	.	PUNCT
fbem-21457	137	1	[	[	X
fbem-21457	137	2	8	8	NUM
fbem-21457	137	3	]	]	X
fbem-21457	137	4	di	di	X
fbem-21457	137	5	weimin	weimin	PROPN
fbem-21457	137	6	,	,	PUNCT
fbem-21457	137	7	yue	yue	PROPN
fbem-21457	137	8	yaoxue	yaoxue	PROPN
fbem-21457	137	9	,	,	PUNCT
fbem-21457	137	10	chen	chen	PROPN
fbem-21457	137	11	guomin	guomin	PROPN
fbem-21457	137	12	.	.	PROPN
fbem-21457	137	13	site	site	NOUN
fbem-21457	137	14	selection	selection	NOUN
fbem-21457	137	15	method	method	NOUN
fbem-21457	137	16	for	for	ADP
fbem-21457	137	17	perishable	perishable	ADJ
fbem-21457	137	18	agricultural	agricultural	ADJ
fbem-21457	137	19	products	product	NOUN
fbem-21457	137	20	distribution	distribution	NOUN
fbem-21457	137	21	center	center	NOUN
fbem-21457	137	22	with	with	ADP
fbem-21457	137	23	distribution	distribution	NOUN
fbem-21457	137	24	capacity	capacity	NOUN
fbem-21457	137	25	limitation[j	limitation[j	PROPN
fbem-21457	137	26	]	]	PUNCT
fbem-21457	137	27	.	.	PUNCT
fbem-21457	138	1	computer	computer	NOUN
fbem-21457	138	2	application	application	NOUN
fbem-21457	138	3	research	research	NOUN
fbem-21457	138	4	,	,	PUNCT
fbem-21457	138	5	2013	2013	NUM
fbem-21457	138	6	,	,	PUNCT
fbem-21457	138	7	30	30	NUM
fbem-21457	138	8	(	(	PUNCT
fbem-21457	138	9	1	1	NUM
fbem-21457	138	10	)	)	PUNCT
fbem-21457	138	11	:	:	PUNCT
fbem-21457	139	1	202	202	NUM
fbem-21457	139	2	-	-	SYM
fbem-21457	139	3	205	205	NUM
fbem-21457	139	4	.	.	PUNCT
fbem-21457	140	1	[	[	X
fbem-21457	140	2	9	9	NUM
fbem-21457	140	3	]	]	SYM
fbem-21457	140	4	yuan	yuan	PROPN
fbem-21457	140	5	qun	qun	PROPN
fbem-21457	140	6	,	,	PUNCT
fbem-21457	140	7	zuo	zuo	PROPN
fbem-21457	140	8	yi	yi	PROPN
fbem-21457	140	9	.	.	PUNCT
fbem-21457	141	1	optimization	optimization	NOUN
fbem-21457	141	2	of	of	ADP
fbem-21457	141	3	cold	cold	ADJ
fbem-21457	141	4	chain	chain	NOUN
fbem-21457	141	5	logistics	logistic	NOUN
fbem-21457	141	6	distribution	distribution	NOUN
fbem-21457	141	7	center	center	NOUN
fbem-21457	141	8	site	site	NOUN
fbem-21457	141	9	selection	selection	NOUN
fbem-21457	141	10	based	base	VERB
fbem-21457	141	11	on	on	ADP
fbem-21457	141	12	improved	improved	ADJ
fbem-21457	141	13	hybrid	hybrid	ADJ
fbem-21457	141	14	genetic	genetic	ADJ
fbem-21457	141	15	algorithm[j	algorithm[j	PROPN
fbem-21457	141	16	]	]	PUNCT
fbem-21457	141	17	.	.	PUNCT
fbem-21457	142	1	journal	journal	PROPN
fbem-21457	142	2	of	of	ADP
fbem-21457	142	3	shanghai	shanghai	PROPN
fbem-21457	142	4	jiao	jiao	PROPN
fbem-21457	142	5	tong	tong	PROPN
fbem-21457	142	6	university,2016,50(11):1	university,2016,50(11):1	PROPN
fbem-21457	142	7	795	795	NUM
fbem-21457	142	8	-	-	SYM
fbem-21457	142	9	1	1	NUM
fbem-21457	142	10	800	800	NUM
fbem-21457	142	11	.	.	PUNCT
fbem-21457	143	1	[	[	X
fbem-21457	143	2	10	10	NUM
fbem-21457	143	3	]	]	X
fbem-21457	143	4	wang	wang	PROPN
fbem-21457	143	5	haoxiang	haoxiang	PROPN
fbem-21457	143	6	,	,	PUNCT
fbem-21457	143	7	cai	cai	PROPN
fbem-21457	143	8	yiming	yiming	PROPN
fbem-21457	143	9	,	,	PUNCT
fbem-21457	143	10	xie	xie	PROPN
fbem-21457	143	11	cheng	cheng	PROPN
fbem-21457	143	12	.	.	PUNCT
fbem-21457	143	13	research	research	NOUN
fbem-21457	143	14	on	on	ADP
fbem-21457	143	15	site	site	NOUN
fbem-21457	143	16	selection	selection	NOUN
fbem-21457	143	17	of	of	ADP
fbem-21457	143	18	pharmaceutical	pharmaceutical	ADJ
fbem-21457	143	19	cold	cold	ADJ
fbem-21457	143	20	chain	chain	NOUN
fbem-21457	143	21	logistics	logistic	NOUN
fbem-21457	143	22	center	center	NOUN
fbem-21457	143	23	based	base	VERB
fbem-21457	143	24	on	on	ADP
fbem-21457	143	25	two	two	NUM
fbem-21457	143	26	-	-	PUNCT
fbem-21457	143	27	layer	layer	NOUN
fbem-21457	143	28	model[j	model[j	PROPN
fbem-21457	143	29	]	]	PUNCT
fbem-21457	143	30	.	.	PUNCT
fbem-21457	144	1	logistics	logistic	NOUN
fbem-21457	144	2	i	i	PRON
fbem-21457	144	3	program	program	NOUN
fbem-21457	144	4	and	and	CCONJ
fbem-21457	144	5	management	management	NOUN
fbem-21457	144	6	,	,	PUNCT
fbem-21457	144	7	2018	2018	NUM
fbem-21457	144	8	,	,	PUNCT
fbem-21457	144	9	40	40	NUM
fbem-21457	144	10	(	(	PUNCT
fbem-21457	144	11	2	2	NUM
fbem-21457	144	12	)	)	PUNCT
fbem-21457	144	13	:	:	PUNCT
fbem-21457	144	14	71	71	NUM
fbem-21457	144	15	-	-	SYM
fbem-21457	144	16	73	73	NUM
fbem-21457	144	17	,	,	PUNCT
fbem-21457	144	18	76	76	NUM
fbem-21457	144	19	.	.	PUNCT
fbem-21457	145	1	[	[	X
fbem-21457	145	2	11	11	NUM
fbem-21457	145	3	]	]	PUNCT
fbem-21457	145	4	ioannis	ioannis	PROPN
fbem-21457	145	5	giannikos	giannikos	PROPN
fbem-21457	145	6	.	.	PUNCT
fbem-21457	146	1	a	a	DET
fbem-21457	146	2	multiob	multiob	NOUN
fbem-21457	146	3	jective	jective	ADJ
fbem-21457	146	4	programming	programming	NOUN
fbem-21457	146	5	model	model	NOUN
fbem-21457	146	6	for	for	ADP
fbem-21457	146	7	locating	locate	VERB
fbem-21457	146	8	treatment	treatment	NOUN
fbem-21457	146	9	sites	site	NOUN
fbem-21457	146	10	and	and	CCONJ
fbem-21457	146	11	routing	route	VERB
fbem-21457	146	12	hazardous	hazardous	ADJ
fbem-21457	146	13	wastes	waste	NOUN
fbem-21457	146	14	[	[	X
fbem-21457	146	15	j	j	X
fbem-21457	146	16	]	]	X
fbem-21457	146	17	.	.	PUNCT
fbem-21457	147	1	european	european	ADJ
fbem-21457	147	2	jounal	jounal	NOUN
fbem-21457	147	3	of	of	ADP
fbem-21457	147	4	operational	operational	ADJ
fbem-21457	147	5	research	research	NOUN
fbem-21457	147	6	,	,	PUNCT
fbem-21457	147	7	1998,104	1998,104	NUM
fbem-21457	147	8	:	:	PUNCT
fbem-21457	147	9	333	333	NUM
fbem-21457	147	10	-	-	SYM
fbem-21457	147	11	34	34	NUM