id sid tid token lemma pos fcis-6346 1 1 frontiers frontier NOUN fcis-6346 1 2 in in ADP fcis-6346 1 3 computing computing NOUN fcis-6346 1 4 and and CCONJ fcis-6346 1 5 intelligent intelligent ADJ fcis-6346 1 6 systems system NOUN fcis-6346 1 7 issn issn VERB fcis-6346 1 8 : : PUNCT fcis-6346 1 9 2832 2832 NUM fcis-6346 1 10 - - SYM fcis-6346 1 11 6024 6024 NUM fcis-6346 1 12 | | NOUN fcis-6346 1 13 vol vol NOUN fcis-6346 1 14 . . PROPN fcis-6346 2 1 3 3 NUM fcis-6346 2 2 , , PUNCT fcis-6346 2 3 no no INTJ fcis-6346 2 4 . . NOUN fcis-6346 2 5 1 1 NUM fcis-6346 2 6 , , PUNCT fcis-6346 2 7 2023 2023 NUM fcis-6346 2 8 120 120 NUM fcis-6346 2 9 social social ADJ fcis-6346 2 10 recommendation recommendation NOUN fcis-6346 2 11 algorithm algorithm NOUN fcis-6346 2 12 based base VERB fcis-6346 2 13 on on ADP fcis-6346 2 14 collaborative collaborative ADJ fcis-6346 2 15 filter filter NOUN fcis-6346 2 16 algorithms algorithm NOUN fcis-6346 2 17 jingwen jingwen PROPN fcis-6346 2 18 tan tan PROPN fcis-6346 2 19 * * PROPN fcis-6346 2 20 , , PUNCT fcis-6346 2 21 youxin youxin PROPN fcis-6346 2 22 hu hu PROPN fcis-6346 2 23 , , PUNCT fcis-6346 2 24 jianqiu jianqiu PROPN fcis-6346 2 25 luo luo PROPN fcis-6346 2 26 school school PROPN fcis-6346 2 27 of of ADP fcis-6346 2 28 computer computer NOUN fcis-6346 2 29 science science NOUN fcis-6346 2 30 , , PUNCT fcis-6346 2 31 sichuan sichuan PROPN fcis-6346 2 32 university university PROPN fcis-6346 2 33 of of ADP fcis-6346 2 34 science science NOUN fcis-6346 2 35 and and CCONJ fcis-6346 2 36 engineering engineering NOUN fcis-6346 2 37 , , PUNCT fcis-6346 2 38 zigong zigong PROPN fcis-6346 2 39 643000 643000 NUM fcis-6346 2 40 , , PUNCT fcis-6346 2 41 china china PROPN fcis-6346 2 42 * * PUNCT fcis-6346 2 43 corresponding correspond VERB fcis-6346 2 44 author author NOUN fcis-6346 2 45 : : PUNCT fcis-6346 2 46 jingwen jingwen PROPN fcis-6346 2 47 tan tan PROPN fcis-6346 2 48 ( ( PUNCT fcis-6346 2 49 email email NOUN fcis-6346 2 50 : : PUNCT fcis-6346 2 51 wyxhslhs@163.com wyxhslhs@163.com PROPN fcis-6346 2 52 ) ) PUNCT fcis-6346 2 53 abstract abstract NOUN fcis-6346 2 54 : : PUNCT fcis-6346 2 55 for for ADP fcis-6346 2 56 traditional traditional ADJ fcis-6346 2 57 collaborative collaborative ADJ fcis-6346 2 58 filter filter NOUN fcis-6346 2 59 recommendation recommendation NOUN fcis-6346 2 60 algorithm algorithm NOUN fcis-6346 2 61 technology technology NOUN fcis-6346 2 62 , , PUNCT fcis-6346 2 63 this this DET fcis-6346 2 64 paper paper NOUN fcis-6346 2 65 combines combine VERB fcis-6346 2 66 the the DET fcis-6346 2 67 collaborative collaborative ADJ fcis-6346 2 68 filtering filter VERB fcis-6346 2 69 recommendation recommendation NOUN fcis-6346 2 70 algorithm algorithm NOUN fcis-6346 2 71 with with ADP fcis-6346 2 72 the the DET fcis-6346 2 73 community community NOUN fcis-6346 2 74 division division NOUN fcis-6346 2 75 technology technology NOUN fcis-6346 2 76 of of ADP fcis-6346 2 77 social social ADJ fcis-6346 2 78 networks network NOUN fcis-6346 2 79 , , PUNCT fcis-6346 2 80 use use VERB fcis-6346 2 81 the the DET fcis-6346 2 82 louvain louvain NOUN fcis-6346 2 83 community community NOUN fcis-6346 2 84 to to PART fcis-6346 2 85 divide divide VERB fcis-6346 2 86 algorithms algorithm NOUN fcis-6346 2 87 , , PUNCT fcis-6346 2 88 divide divide VERB fcis-6346 2 89 the the DET fcis-6346 2 90 recommendation recommendation NOUN fcis-6346 2 91 users user NOUN fcis-6346 2 92 to to ADP fcis-6346 2 93 a a DET fcis-6346 2 94 community community NOUN fcis-6346 2 95 of of ADP fcis-6346 2 96 similar similar ADJ fcis-6346 2 97 users user NOUN fcis-6346 2 98 , , PUNCT fcis-6346 2 99 and and CCONJ fcis-6346 2 100 use use VERB fcis-6346 2 101 the the DET fcis-6346 2 102 collaborative collaborative ADJ fcis-6346 2 103 filter filter NOUN fcis-6346 2 104 algorithm algorithm NOUN fcis-6346 2 105 based base VERB fcis-6346 2 106 on on ADP fcis-6346 2 107 the the DET fcis-6346 2 108 user user NOUN fcis-6346 2 109 similarity similarity NOUN fcis-6346 2 110 formula formula NOUN fcis-6346 2 111 within within ADP fcis-6346 2 112 the the DET fcis-6346 2 113 community community NOUN fcis-6346 2 114 to to PART fcis-6346 2 115 recommend recommend VERB fcis-6346 2 116 . . PUNCT fcis-6346 3 1 in in ADP fcis-6346 3 2 order order NOUN fcis-6346 3 3 to to PART fcis-6346 3 4 verify verify VERB fcis-6346 3 5 the the DET fcis-6346 3 6 effectiveness effectiveness NOUN fcis-6346 3 7 and and CCONJ fcis-6346 3 8 accuracy accuracy NOUN fcis-6346 3 9 of of ADP fcis-6346 3 10 the the DET fcis-6346 3 11 algorithm algorithm NOUN fcis-6346 3 12 in in ADP fcis-6346 3 13 this this DET fcis-6346 3 14 paper paper NOUN fcis-6346 3 15 , , PUNCT fcis-6346 3 16 based base VERB fcis-6346 3 17 on on ADP fcis-6346 3 18 the the DET fcis-6346 3 19 introduction introduction NOUN fcis-6346 3 20 of of ADP fcis-6346 3 21 the the DET fcis-6346 3 22 douban douban NOUN fcis-6346 3 23 dataset dataset NOUN fcis-6346 3 24 and and CCONJ fcis-6346 3 25 the the DET fcis-6346 3 26 evaluation evaluation NOUN fcis-6346 3 27 criteria criterion NOUN fcis-6346 3 28 used use VERB fcis-6346 3 29 , , PUNCT fcis-6346 3 30 a a DET fcis-6346 3 31 variety variety NOUN fcis-6346 3 32 of of ADP fcis-6346 3 33 comparative comparative ADJ fcis-6346 3 34 experiments experiment NOUN fcis-6346 3 35 are be AUX fcis-6346 3 36 carried carry VERB fcis-6346 3 37 out out ADP fcis-6346 3 38 on on ADP fcis-6346 3 39 the the DET fcis-6346 3 40 douban douban NOUN fcis-6346 3 41 dataset dataset VERB fcis-6346 3 42 with with ADP fcis-6346 3 43 a a DET fcis-6346 3 44 variety variety NOUN fcis-6346 3 45 of of ADP fcis-6346 3 46 recommendation recommendation NOUN fcis-6346 3 47 algorithms algorithm NOUN fcis-6346 3 48 to to PART fcis-6346 3 49 verify verify VERB fcis-6346 3 50 the the DET fcis-6346 3 51 effectiveness effectiveness NOUN fcis-6346 3 52 of of ADP fcis-6346 3 53 the the DET fcis-6346 3 54 proposed propose VERB fcis-6346 3 55 algorithm algorithm NOUN fcis-6346 3 56 keywords keyword NOUN fcis-6346 3 57 : : PUNCT fcis-6346 3 58 movie movie NOUN fcis-6346 3 59 recommendation recommendation NOUN fcis-6346 3 60 ; ; PUNCT fcis-6346 3 61 social social ADJ fcis-6346 3 62 networks network NOUN fcis-6346 3 63 ; ; PUNCT fcis-6346 3 64 coordinate coordinate VERB fcis-6346 3 65 filtering filter VERB fcis-6346 3 66 algorithms algorithm NOUN fcis-6346 3 67 and and CCONJ fcis-6346 3 68 recommendation recommendation NOUN fcis-6346 3 69 algorithms algorithm NOUN fcis-6346 3 70 . . PUNCT fcis-6346 4 1 1 1 X fcis-6346 4 2 . . X fcis-6346 4 3 introduction introduction NOUN fcis-6346 4 4 in in ADP fcis-6346 4 5 today today NOUN fcis-6346 4 6 's 's PART fcis-6346 4 7 society society NOUN fcis-6346 4 8 , , PUNCT fcis-6346 4 9 the the DET fcis-6346 4 10 network network NOUN fcis-6346 4 11 has have AUX fcis-6346 4 12 surged surge VERB fcis-6346 4 13 massive massive ADJ fcis-6346 4 14 resources resource NOUN fcis-6346 4 15 , , PUNCT fcis-6346 4 16 making make VERB fcis-6346 4 17 people people NOUN fcis-6346 4 18 dizzy dizzy ADJ fcis-6346 4 19 , , PUNCT fcis-6346 4 20 which which PRON fcis-6346 4 21 brings bring VERB fcis-6346 4 22 great great ADJ fcis-6346 4 23 challenges challenge NOUN fcis-6346 4 24 to to ADP fcis-6346 4 25 the the DET fcis-6346 4 26 group group NOUN fcis-6346 4 27 using use VERB fcis-6346 4 28 the the DET fcis-6346 4 29 network network NOUN fcis-6346 4 30 , , PUNCT fcis-6346 4 31 because because SCONJ fcis-6346 4 32 it it PRON fcis-6346 4 33 is be AUX fcis-6346 4 34 difficult difficult ADJ fcis-6346 4 35 for for SCONJ fcis-6346 4 36 users user NOUN fcis-6346 4 37 to to PART fcis-6346 4 38 obtain obtain VERB fcis-6346 4 39 valuable valuable ADJ fcis-6346 4 40 and and CCONJ fcis-6346 4 41 available available ADJ fcis-6346 4 42 information information NOUN fcis-6346 4 43 from from ADP fcis-6346 4 44 a a DET fcis-6346 4 45 large large ADJ fcis-6346 4 46 amount amount NOUN fcis-6346 4 47 of of ADP fcis-6346 4 48 information information NOUN fcis-6346 4 49 , , PUNCT fcis-6346 4 50 and and CCONJ fcis-6346 4 51 the the DET fcis-6346 4 52 recommendation recommendation NOUN fcis-6346 4 53 algorithm algorithm NOUN fcis-6346 4 54 came come VERB fcis-6346 4 55 into into ADP fcis-6346 4 56 being being NOUN fcis-6346 4 57 , , PUNCT fcis-6346 4 58 the the DET fcis-6346 4 59 recommendation recommendation NOUN fcis-6346 4 60 system system NOUN fcis-6346 4 61 is be AUX fcis-6346 4 62 a a DET fcis-6346 4 63 representative representative NOUN fcis-6346 4 64 of of ADP fcis-6346 4 65 information information NOUN fcis-6346 4 66 filtering filter VERB fcis-6346 4 67 technology technology NOUN fcis-6346 4 68 , , PUNCT fcis-6346 4 69 which which PRON fcis-6346 4 70 is be AUX fcis-6346 4 71 widely widely ADV fcis-6346 4 72 used use VERB fcis-6346 4 73 to to PART fcis-6346 4 74 solve solve VERB fcis-6346 4 75 the the DET fcis-6346 4 76 problem problem NOUN fcis-6346 4 77 of of ADP fcis-6346 4 78 information information NOUN fcis-6346 4 79 overload overload NOUN fcis-6346 4 80 , , PUNCT fcis-6346 4 81 identify identify VERB fcis-6346 4 82 the the DET fcis-6346 4 83 goods good NOUN fcis-6346 4 84 of of ADP fcis-6346 4 85 interest interest NOUN fcis-6346 4 86 from from ADP fcis-6346 4 87 a a DET fcis-6346 4 88 large large ADJ fcis-6346 4 89 amount amount NOUN fcis-6346 4 90 of of ADP fcis-6346 4 91 data datum NOUN fcis-6346 4 92 and and CCONJ fcis-6346 4 93 recommend recommend VERB fcis-6346 4 94 it it PRON fcis-6346 4 95 to to ADP fcis-6346 4 96 users user NOUN fcis-6346 4 97 . . PUNCT fcis-6346 5 1 in in ADP fcis-6346 5 2 recent recent ADJ fcis-6346 5 3 years year NOUN fcis-6346 5 4 , , PUNCT fcis-6346 5 5 many many ADJ fcis-6346 5 6 experts expert NOUN fcis-6346 5 7 have have AUX fcis-6346 5 8 found find VERB fcis-6346 5 9 that that SCONJ fcis-6346 5 10 the the DET fcis-6346 5 11 relationship relationship NOUN fcis-6346 5 12 between between ADP fcis-6346 5 13 social social ADJ fcis-6346 5 14 network network NOUN fcis-6346 5 15 users user NOUN fcis-6346 5 16 can can AUX fcis-6346 5 17 be be AUX fcis-6346 5 18 seen see VERB fcis-6346 5 19 as as ADP fcis-6346 5 20 a a DET fcis-6346 5 21 link link NOUN fcis-6346 6 1 [ [ X fcis-6346 6 2 1 1 NUM fcis-6346 6 3 ] ] PUNCT fcis-6346 6 4 , , PUNCT fcis-6346 6 5 these these DET fcis-6346 6 6 users user NOUN fcis-6346 6 7 may may AUX fcis-6346 6 8 follow follow VERB fcis-6346 6 9 each each DET fcis-6346 6 10 other other ADJ fcis-6346 6 11 based base VERB fcis-6346 6 12 on on ADP fcis-6346 6 13 hobbies hobby NOUN fcis-6346 6 14 or or CCONJ fcis-6346 6 15 interests interest NOUN fcis-6346 6 16 , , PUNCT fcis-6346 6 17 or or CCONJ fcis-6346 6 18 real real ADJ fcis-6346 6 19 friends friend NOUN fcis-6346 6 20 , , PUNCT fcis-6346 6 21 so so SCONJ fcis-6346 6 22 it it PRON fcis-6346 6 23 means mean VERB fcis-6346 6 24 that that SCONJ fcis-6346 6 25 there there PRON fcis-6346 6 26 may may AUX fcis-6346 6 27 be be AUX fcis-6346 6 28 certain certain ADJ fcis-6346 6 29 similarities similarity NOUN fcis-6346 6 30 and and CCONJ fcis-6346 6 31 correlations correlation NOUN fcis-6346 6 32 between between ADP fcis-6346 6 33 users user NOUN fcis-6346 6 34 and and CCONJ fcis-6346 6 35 the the DET fcis-6346 6 36 users user NOUN fcis-6346 6 37 they they PRON fcis-6346 6 38 follow follow VERB fcis-6346 6 39 , , PUNCT fcis-6346 6 40 and and CCONJ fcis-6346 6 41 we we PRON fcis-6346 6 42 can can AUX fcis-6346 6 43 use use VERB fcis-6346 6 44 this this DET fcis-6346 6 45 similarity similarity NOUN fcis-6346 6 46 to to PART fcis-6346 6 47 discover discover VERB fcis-6346 6 48 the the DET fcis-6346 6 49 information information NOUN fcis-6346 6 50 and and CCONJ fcis-6346 6 51 implied imply VERB fcis-6346 6 52 content content NOUN fcis-6346 6 53 we we PRON fcis-6346 6 54 need need VERB fcis-6346 6 55 . . PUNCT fcis-6346 7 1 in in ADP fcis-6346 7 2 the the DET fcis-6346 7 3 recommendation recommendation NOUN fcis-6346 7 4 algorithm algorithm NOUN fcis-6346 7 5 , , PUNCT fcis-6346 7 6 there there PRON fcis-6346 7 7 have have AUX fcis-6346 7 8 always always ADV fcis-6346 7 9 been be AUX fcis-6346 7 10 problems problem NOUN fcis-6346 7 11 in in ADP fcis-6346 7 12 data datum NOUN fcis-6346 7 13 sparsity sparsity NOUN fcis-6346 7 14 , , PUNCT fcis-6346 7 15 cold cold ADJ fcis-6346 7 16 start start NOUN fcis-6346 7 17 and and CCONJ fcis-6346 7 18 system system NOUN fcis-6346 7 19 performance performance NOUN fcis-6346 7 20 , , PUNCT fcis-6346 7 21 and and CCONJ fcis-6346 7 22 considering consider VERB fcis-6346 7 23 multi multi ADJ fcis-6346 7 24 - - ADJ fcis-6346 7 25 dimensional dimensional ADJ fcis-6346 7 26 factors factor NOUN fcis-6346 7 27 combined combine VERB fcis-6346 7 28 with with ADP fcis-6346 7 29 the the DET fcis-6346 7 30 user user NOUN fcis-6346 7 31 's 's PART fcis-6346 7 32 information information NOUN fcis-6346 7 33 in in ADP fcis-6346 7 34 social social ADJ fcis-6346 7 35 relations relation NOUN fcis-6346 7 36 is be AUX fcis-6346 7 37 an an DET fcis-6346 7 38 important important ADJ fcis-6346 7 39 way way NOUN fcis-6346 7 40 to to PART fcis-6346 7 41 improve improve VERB fcis-6346 7 42 the the DET fcis-6346 7 43 accuracy accuracy NOUN fcis-6346 7 44 of of ADP fcis-6346 7 45 the the DET fcis-6346 7 46 recommendation recommendation NOUN fcis-6346 7 47 system system NOUN fcis-6346 7 48 [ [ X fcis-6346 7 49 2 2 NUM fcis-6346 7 50 ] ] PUNCT fcis-6346 7 51 . . PUNCT fcis-6346 8 1 zhou zhou PROPN fcis-6346 8 2 w w PROPN fcis-6346 8 3 et et PROPN fcis-6346 8 4 al al PROPN fcis-6346 8 5 . . PUNCT fcis-6346 9 1 [ [ X fcis-6346 9 2 3 3 X fcis-6346 9 3 ] ] X fcis-6346 9 4 propose propose VERB fcis-6346 9 5 a a DET fcis-6346 9 6 new new ADJ fcis-6346 9 7 recommendation recommendation NOUN fcis-6346 9 8 method method NOUN fcis-6346 9 9 srmp srmp NOUN fcis-6346 9 10 based base VERB fcis-6346 9 11 on on ADP fcis-6346 9 12 social social ADJ fcis-6346 9 13 network network NOUN fcis-6346 9 14 and and CCONJ fcis-6346 9 15 preference preference NOUN fcis-6346 9 16 , , PUNCT fcis-6346 9 17 which which PRON fcis-6346 9 18 integrates integrate VERB fcis-6346 9 19 social social ADJ fcis-6346 9 20 network network NOUN fcis-6346 9 21 information information NOUN fcis-6346 9 22 and and CCONJ fcis-6346 9 23 user user NOUN fcis-6346 9 24 preferences preference NOUN fcis-6346 9 25 into into ADP fcis-6346 9 26 the the DET fcis-6346 9 27 recommendation recommendation NOUN fcis-6346 9 28 matrix matrix NOUN fcis-6346 9 29 decomposition decomposition NOUN fcis-6346 9 30 , , PUNCT fcis-6346 9 31 and and CCONJ fcis-6346 9 32 in in ADP fcis-6346 9 33 order order NOUN fcis-6346 9 34 to to PART fcis-6346 9 35 improve improve VERB fcis-6346 9 36 the the DET fcis-6346 9 37 accuracy accuracy NOUN fcis-6346 9 38 of of ADP fcis-6346 9 39 recommendation recommendation NOUN fcis-6346 9 40 , , PUNCT fcis-6346 9 41 srmp srmp NOUN fcis-6346 9 42 performs perform VERB fcis-6346 9 43 recommendation recommendation NOUN fcis-6346 9 44 in in ADP fcis-6346 9 45 each each DET fcis-6346 9 46 independent independent ADJ fcis-6346 9 47 subcommunity subcommunity NOUN fcis-6346 9 48 . . PUNCT fcis-6346 9 49 fe fe PROPN fcis-6346 9 50 walter walter PROPN fcis-6346 9 51 et et PROPN fcis-6346 9 52 al al PROPN fcis-6346 9 53 . . PUNCT fcis-6346 10 1 [ [ X fcis-6346 10 2 4 4 NUM fcis-6346 10 3 ] ] PUNCT fcis-6346 10 4 fused fused ADJ fcis-6346 10 5 and and CCONJ fcis-6346 10 6 combined combine VERB fcis-6346 10 7 temporal temporal ADJ fcis-6346 10 8 information information NOUN fcis-6346 10 9 and and CCONJ fcis-6346 10 10 knowledge knowledge NOUN fcis-6346 10 11 graphs graph NOUN fcis-6346 10 12 , , PUNCT fcis-6346 10 13 and and CCONJ fcis-6346 10 14 some some PRON fcis-6346 10 15 of of ADP fcis-6346 10 16 them they PRON fcis-6346 10 17 used use VERB fcis-6346 10 18 the the DET fcis-6346 10 19 trust trust NOUN fcis-6346 10 20 relationship relationship NOUN fcis-6346 10 21 between between ADP fcis-6346 10 22 users user NOUN fcis-6346 10 23 as as ADP fcis-6346 10 24 social social ADJ fcis-6346 10 25 information information NOUN fcis-6346 10 26 . . PUNCT fcis-6346 11 1 zhang zhang PROPN fcis-6346 11 2 xuefeng xuefeng PROPN fcis-6346 11 3 et et PROPN fcis-6346 11 4 al al PROPN fcis-6346 11 5 . . PUNCT fcis-6346 12 1 [ [ X fcis-6346 12 2 5 5 NUM fcis-6346 12 3 ] ] PUNCT fcis-6346 12 4 based base VERB fcis-6346 12 5 on on ADP fcis-6346 12 6 the the DET fcis-6346 12 7 existing exist VERB fcis-6346 12 8 trust trust NOUN fcis-6346 12 9 - - PUNCT fcis-6346 12 10 based base VERB fcis-6346 12 11 recommendation recommendation NOUN fcis-6346 12 12 system system NOUN fcis-6346 12 13 , , PUNCT fcis-6346 12 14 using use VERB fcis-6346 12 15 autoencoder autoencoder NOUN fcis-6346 12 16 to to PART fcis-6346 12 17 optimize optimize VERB fcis-6346 12 18 the the DET fcis-6346 12 19 unsupervised unsupervised ADJ fcis-6346 12 20 initialization initialization NOUN fcis-6346 12 21 feature feature NOUN fcis-6346 12 22 of of ADP fcis-6346 12 23 user user NOUN fcis-6346 12 24 behavior behavior NOUN fcis-6346 12 25 , , PUNCT fcis-6346 12 26 and and CCONJ fcis-6346 12 27 proposed propose VERB fcis-6346 12 28 a a DET fcis-6346 12 29 new new ADJ fcis-6346 12 30 trust trust NOUN fcis-6346 12 31 measurement measurement NOUN fcis-6346 12 32 model model NOUN fcis-6346 12 33 that that PRON fcis-6346 12 34 integrates integrate VERB fcis-6346 12 35 user user NOUN fcis-6346 12 36 interaction interaction NOUN fcis-6346 12 37 information information NOUN fcis-6346 12 38 , , PUNCT fcis-6346 12 39 preference preference NOUN fcis-6346 12 40 degree degree NOUN fcis-6346 12 41 and and CCONJ fcis-6346 12 42 trust trust NOUN fcis-6346 12 43 . . PUNCT fcis-6346 13 1 in in ADP fcis-6346 13 2 2021 2021 NUM fcis-6346 13 3 , , PUNCT fcis-6346 13 4 researchers researcher NOUN fcis-6346 13 5 [ [ X fcis-6346 13 6 6 6 X fcis-6346 13 7 ] ] PUNCT fcis-6346 13 8 proposed propose VERB fcis-6346 13 9 a a DET fcis-6346 13 10 service service NOUN fcis-6346 13 11 recommendation recommendation NOUN fcis-6346 13 12 system system NOUN fcis-6346 13 13 that that PRON fcis-6346 13 14 utilizes utilize VERB fcis-6346 13 15 the the DET fcis-6346 13 16 social social ADJ fcis-6346 13 17 relationship relationship NOUN fcis-6346 13 18 between between ADP fcis-6346 13 19 device device NOUN fcis-6346 13 20 owners owner NOUN fcis-6346 13 21 , , PUNCT fcis-6346 13 22 in in ADP fcis-6346 13 23 which which PRON fcis-6346 13 24 the the DET fcis-6346 13 25 recommendation recommendation NOUN fcis-6346 13 26 is be AUX fcis-6346 13 27 based base VERB fcis-6346 13 28 on on ADP fcis-6346 13 29 the the DET fcis-6346 13 30 different different ADJ fcis-6346 13 31 relationships relationship NOUN fcis-6346 13 32 between between ADP fcis-6346 13 33 the the DET fcis-6346 13 34 service service NOUN fcis-6346 13 35 requester requester NOUN fcis-6346 13 36 and and CCONJ fcis-6346 13 37 the the DET fcis-6346 13 38 service service NOUN fcis-6346 13 39 provider provider NOUN fcis-6346 13 40 . . PUNCT fcis-6346 14 1 experimental experimental ADJ fcis-6346 14 2 results result NOUN fcis-6346 14 3 show show VERB fcis-6346 14 4 that that SCONJ fcis-6346 14 5 in in ADP fcis-6346 14 6 the the DET fcis-6346 14 7 internet internet NOUN fcis-6346 14 8 of of ADP fcis-6346 14 9 things thing NOUN fcis-6346 14 10 environment environment NOUN fcis-6346 14 11 , , PUNCT fcis-6346 14 12 incorporating incorporate VERB fcis-6346 14 13 users user NOUN fcis-6346 14 14 ' ' PART fcis-6346 14 15 social social ADJ fcis-6346 14 16 relationships relationship NOUN fcis-6346 14 17 into into ADP fcis-6346 14 18 service service NOUN fcis-6346 14 19 recommendation recommendation NOUN fcis-6346 14 20 can can AUX fcis-6346 14 21 improve improve VERB fcis-6346 14 22 the the DET fcis-6346 14 23 accuracy accuracy NOUN fcis-6346 14 24 and and CCONJ fcis-6346 14 25 diversity diversity NOUN fcis-6346 14 26 of of ADP fcis-6346 14 27 services service NOUN fcis-6346 14 28 . . PUNCT fcis-6346 15 1 li li PROPN fcis-6346 15 2 gai gai PROPN fcis-6346 15 3 et et PROPN fcis-6346 15 4 al al PROPN fcis-6346 15 5 . . PUNCT fcis-6346 16 1 [ [ X fcis-6346 16 2 7 7 X fcis-6346 16 3 ] ] X fcis-6346 16 4 propose propose VERB fcis-6346 16 5 a a DET fcis-6346 16 6 new new ADJ fcis-6346 16 7 social social ADJ fcis-6346 16 8 coordering coordering NOUN fcis-6346 16 9 recommendation recommendation NOUN fcis-6346 16 10 algorithm algorithm NOUN fcis-6346 16 11 that that PRON fcis-6346 16 12 combines combine VERB fcis-6346 16 13 explicit explicit ADJ fcis-6346 16 14 / / SYM fcis-6346 16 15 implicit implicit ADJ fcis-6346 16 16 feedback feedback NOUN fcis-6346 16 17 , , PUNCT fcis-6346 16 18 which which PRON fcis-6346 16 19 simultaneously simultaneously ADV fcis-6346 16 20 mines mine VERB fcis-6346 16 21 the the DET fcis-6346 16 22 explicit explicit ADJ fcis-6346 16 23 / / SYM fcis-6346 16 24 implicit implicit ADJ fcis-6346 16 25 information information NOUN fcis-6346 16 26 in in ADP fcis-6346 16 27 the the DET fcis-6346 16 28 user user NOUN fcis-6346 16 29 score score NOUN fcis-6346 16 30 matrix matrix NOUN fcis-6346 16 31 and and CCONJ fcis-6346 16 32 the the DET fcis-6346 16 33 social social ADJ fcis-6346 16 34 network network NOUN fcis-6346 16 35 matrix matrix NOUN fcis-6346 16 36 . . PUNCT fcis-6346 17 1 2 2 X fcis-6346 17 2 . . X fcis-6346 17 3 recommendation recommendation NOUN fcis-6346 17 4 algorithm algorithm NOUN fcis-6346 17 5 2.1 2.1 NUM fcis-6346 17 6 . . PUNCT fcis-6346 18 1 community community NOUN fcis-6346 18 2 detection detection NOUN fcis-6346 18 3 algorithm algorithm NOUN fcis-6346 18 4 this this DET fcis-6346 18 5 paper paper NOUN fcis-6346 18 6 uses use VERB fcis-6346 18 7 the the DET fcis-6346 18 8 louvain louvain NOUN fcis-6346 18 9 community community NOUN fcis-6346 18 10 division division NOUN fcis-6346 18 11 algorithm algorithm NOUN fcis-6346 18 12 proposed propose VERB fcis-6346 18 13 by by ADP fcis-6346 18 14 blondel blondel NOUN fcis-6346 18 15 et et PROPN fcis-6346 18 16 al al PROPN fcis-6346 18 17 . . PUNCT fcis-6346 19 1 [ [ X fcis-6346 19 2 8 8 NUM fcis-6346 19 3 - - SYM fcis-6346 19 4 9 9 NUM fcis-6346 19 5 ] ] PUNCT fcis-6346 19 6 , , PUNCT fcis-6346 19 7 which which PRON fcis-6346 19 8 is be AUX fcis-6346 19 9 a a DET fcis-6346 19 10 graph graph NOUN fcis-6346 19 11 algorithm algorithm NOUN fcis-6346 19 12 model model NOUN fcis-6346 19 13 based base VERB fcis-6346 19 14 on on ADP fcis-6346 19 15 modularity modularity NOUN fcis-6346 19 16 , , PUNCT fcis-6346 19 17 different different ADJ fcis-6346 19 18 from from ADP fcis-6346 19 19 ordinary ordinary ADJ fcis-6346 19 20 modularity modularity NOUN fcis-6346 19 21 - - PUNCT fcis-6346 19 22 based base VERB fcis-6346 19 23 and and CCONJ fcis-6346 19 24 modularity modularity NOUN fcis-6346 19 25 - - PUNCT fcis-6346 19 26 based base VERB fcis-6346 19 27 gain gain NOUN fcis-6346 19 28 algorithms algorithm NOUN fcis-6346 19 29 , , PUNCT fcis-6346 19 30 this this DET fcis-6346 19 31 algorithm algorithm NOUN fcis-6346 19 32 is be AUX fcis-6346 19 33 suitable suitable ADJ fcis-6346 19 34 for for ADP fcis-6346 19 35 large large ADJ fcis-6346 19 36 networks network NOUN fcis-6346 19 37 , , PUNCT fcis-6346 19 38 fast fast ADJ fcis-6346 19 39 division division NOUN fcis-6346 19 40 , , PUNCT fcis-6346 19 41 and and CCONJ fcis-6346 19 42 can can AUX fcis-6346 19 43 improve improve VERB fcis-6346 19 44 the the DET fcis-6346 19 45 recommendation recommendation NOUN fcis-6346 19 46 efficiency efficiency NOUN fcis-6346 19 47 when when SCONJ fcis-6346 19 48 used use VERB fcis-6346 19 49 on on ADP fcis-6346 19 50 the the DET fcis-6346 19 51 recommendation recommendation NOUN fcis-6346 19 52 system system NOUN fcis-6346 19 53 , , PUNCT fcis-6346 19 54 and and CCONJ fcis-6346 19 55 has have VERB fcis-6346 19 56 the the DET fcis-6346 19 57 advantages advantage NOUN fcis-6346 19 58 of of ADP fcis-6346 19 59 simple simple ADJ fcis-6346 19 60 implementation implementation NOUN fcis-6346 19 61 and and CCONJ fcis-6346 19 62 high high ADJ fcis-6346 19 63 execution execution NOUN fcis-6346 19 64 effect effect NOUN fcis-6346 19 65 , , PUNCT fcis-6346 19 66 so so SCONJ fcis-6346 19 67 this this DET fcis-6346 19 68 paper paper NOUN fcis-6346 19 69 uses use VERB fcis-6346 19 70 the the DET fcis-6346 19 71 algorithm algorithm NOUN fcis-6346 19 72 to to PART fcis-6346 19 73 similarly similarly ADV fcis-6346 19 74 divide divide VERB fcis-6346 19 75 the the DET fcis-6346 19 76 social social ADJ fcis-6346 19 77 relationships relationship NOUN fcis-6346 19 78 of of ADP fcis-6346 19 79 target target NOUN fcis-6346 19 80 users user NOUN fcis-6346 19 81 . . PUNCT fcis-6346 20 1 louvain louvain PROPN fcis-6346 20 2 's 's PART fcis-6346 20 3 algorithm algorithm NOUN fcis-6346 20 4 is be AUX fcis-6346 20 5 a a DET fcis-6346 20 6 community community NOUN fcis-6346 20 7 discovery discovery NOUN fcis-6346 20 8 algorithm algorithm NOUN fcis-6346 20 9 based base VERB fcis-6346 20 10 on on ADP fcis-6346 20 11 modularity modularity NOUN fcis-6346 20 12 optimization optimization NOUN fcis-6346 20 13 , , PUNCT fcis-6346 20 14 and and CCONJ fcis-6346 20 15 the the DET fcis-6346 20 16 modularity modularity NOUN fcis-6346 20 17 formula formula NOUN fcis-6346 20 18 is be AUX fcis-6346 20 19 as as SCONJ fcis-6346 20 20 follows follow VERB fcis-6346 20 21 : : PUNCT fcis-6346 20 22 𝑄 𝑄 PROPN fcis-6346 20 23 = = SYM fcis-6346 20 24 1 1 NUM fcis-6346 20 25 2π‘š 2π‘š NOUN fcis-6346 21 1 [ [ X fcis-6346 21 2 𝐴𝑒𝑣 𝐴𝑒𝑣 PROPN fcis-6346 21 3 βˆ’ βˆ’ PROPN fcis-6346 21 4 𝑑𝑒𝑑𝑣 𝑑𝑒𝑑𝑣 VERB fcis-6346 21 5 2π‘š 2π‘š NOUN fcis-6346 21 6 ] ] X fcis-6346 21 7 𝛿(𝑐𝑒𝑐𝑣 𝛿(𝑐𝑒𝑐𝑣 X fcis-6346 21 8 ) ) PUNCT fcis-6346 21 9 ( ( PUNCT fcis-6346 21 10 1 1 X fcis-6346 21 11 ) ) PUNCT fcis-6346 21 12 𝐴𝑒𝑣is 𝐴𝑒𝑣is PROPN fcis-6346 21 13 a a DET fcis-6346 21 14 user user NOUN fcis-6346 21 15 relationship relationship NOUN fcis-6346 21 16 adjacency adjacency NOUN fcis-6346 21 17 matrix matrix NOUN fcis-6346 21 18 ; ; PUNCT fcis-6346 21 19 𝑑𝑒 𝑑𝑒 PROPN fcis-6346 21 20 represents represent VERB fcis-6346 21 21 the the DET fcis-6346 21 22 degree degree NOUN fcis-6346 21 23 of of ADP fcis-6346 21 24 user user NOUN fcis-6346 21 25 𝑒 𝑒 NOUN fcis-6346 21 26 ; ; PUNCT fcis-6346 21 27 𝛿(𝑐𝑒𝑐𝑣)is 𝛿(𝑐𝑒𝑐𝑣)is ADJ fcis-6346 21 28 colorola colorola NOUN fcis-6346 21 29 functions function NOUN fcis-6346 21 30 , , PUNCT fcis-6346 21 31 indicates indicate VERB fcis-6346 21 32 whether whether SCONJ fcis-6346 21 33 users user NOUN fcis-6346 21 34 𝑒 𝑒 X fcis-6346 21 35 and and CCONJ fcis-6346 21 36 𝑣 𝑣 PART fcis-6346 21 37 belong belong VERB fcis-6346 21 38 to to ADP fcis-6346 21 39 the the DET fcis-6346 21 40 same same ADJ fcis-6346 21 41 community community NOUN fcis-6346 21 42 from from ADP fcis-6346 21 43 formula formula NOUN fcis-6346 21 44 , , PUNCT fcis-6346 21 45 the the PRON fcis-6346 21 46 higher high ADJ fcis-6346 21 47 the the DET fcis-6346 21 48 value value NOUN fcis-6346 21 49 of of ADP fcis-6346 21 50 q q NOUN fcis-6346 21 51 , , PUNCT fcis-6346 21 52 the the PRON fcis-6346 21 53 better well ADJ fcis-6346 21 54 the the DET fcis-6346 21 55 effect effect NOUN fcis-6346 21 56 of of ADP fcis-6346 21 57 community community NOUN fcis-6346 21 58 division division NOUN fcis-6346 21 59 , , PUNCT fcis-6346 21 60 and and CCONJ fcis-6346 21 61 vice vice ADV fcis-6346 21 62 versa versa ADV fcis-6346 21 63 . . PUNCT fcis-6346 22 1 the the DET fcis-6346 22 2 goal goal NOUN fcis-6346 22 3 of of ADP fcis-6346 22 4 louvain louvain NOUN fcis-6346 22 5 's 's PART fcis-6346 22 6 algorithm algorithm NOUN fcis-6346 22 7 is be AUX fcis-6346 22 8 to to PART fcis-6346 22 9 maximize maximize VERB fcis-6346 22 10 modularity modularity NOUN fcis-6346 22 11 , , PUNCT fcis-6346 22 12 and and CCONJ fcis-6346 22 13 the the DET fcis-6346 22 14 main main ADJ fcis-6346 22 15 algorithm algorithm NOUN fcis-6346 22 16 steps step NOUN fcis-6346 22 17 are be AUX fcis-6346 22 18 divided divide VERB fcis-6346 22 19 into into ADP fcis-6346 22 20 the the DET fcis-6346 22 21 following follow VERB fcis-6346 22 22 steps step NOUN fcis-6346 22 23 : : PUNCT fcis-6346 22 24 step1 step1 PROPN fcis-6346 22 25 : : PUNCT fcis-6346 22 26 think think VERB fcis-6346 22 27 of of ADP fcis-6346 22 28 each each DET fcis-6346 22 29 node node NOUN fcis-6346 22 30 in in ADP fcis-6346 22 31 the the DET fcis-6346 22 32 graph graph NOUN fcis-6346 22 33 as as ADP fcis-6346 22 34 a a DET fcis-6346 22 35 community community NOUN fcis-6346 22 36 . . PUNCT fcis-6346 23 1 step2 step2 PROPN fcis-6346 23 2 : : PUNCT fcis-6346 23 3 try try VERB fcis-6346 23 4 to to PART fcis-6346 23 5 let let VERB fcis-6346 23 6 a a DET fcis-6346 23 7 node node NOUN fcis-6346 23 8 join join VERB fcis-6346 23 9 the the DET fcis-6346 23 10 neighbor neighbor NOUN fcis-6346 23 11 community community NOUN fcis-6346 23 12 , , PUNCT fcis-6346 23 13 calculate calculate VERB fcis-6346 23 14 their their PRON fcis-6346 23 15 modularity modularity NOUN fcis-6346 23 16 increment increment NOUN fcis-6346 23 17 βˆ†π‘„ βˆ†π‘„ PROPN fcis-6346 23 18 , , PUNCT fcis-6346 23 19 try try VERB fcis-6346 23 20 all all DET fcis-6346 23 21 the the DET fcis-6346 23 22 neighbor neighbor NOUN fcis-6346 23 23 communities community NOUN fcis-6346 23 24 again again ADV fcis-6346 23 25 , , PUNCT fcis-6346 23 26 and and CCONJ fcis-6346 23 27 select select VERB fcis-6346 23 28 the the DET fcis-6346 23 29 neighbor neighbor NOUN fcis-6346 23 30 community community NOUN fcis-6346 23 31 with with ADP fcis-6346 23 32 the the DET fcis-6346 23 33 largest large ADJ fcis-6346 23 34 modularity modularity NOUN fcis-6346 23 35 increment increment NOUN fcis-6346 23 36 βˆ† βˆ† PROPN fcis-6346 23 37 q q PUNCT fcis-6346 23 38 to to PART fcis-6346 23 39 join join VERB fcis-6346 23 40 . . PUNCT fcis-6346 24 1 the the DET fcis-6346 24 2 calculation calculation NOUN fcis-6346 24 3 121 121 NUM fcis-6346 24 4 formula formula NOUN fcis-6346 24 5 is be AUX fcis-6346 24 6 as as SCONJ fcis-6346 24 7 follows follow VERB fcis-6346 24 8 ( ( PUNCT fcis-6346 24 9 2 2 NUM fcis-6346 24 10 ): ): PUNCT fcis-6346 24 11 βˆ†π‘„ βˆ†π‘„ NOUN fcis-6346 24 12 = = PUNCT fcis-6346 25 1 [ [ PUNCT fcis-6346 25 2 βˆ‘ βˆ‘ PUNCT fcis-6346 25 3 + + PROPN fcis-6346 25 4 π‘˜π‘–,𝑖𝑛𝑖𝑛 π‘˜π‘–,𝑖𝑛𝑖𝑛 NOUN fcis-6346 25 5 2π‘š 2π‘š NOUN fcis-6346 25 6 βˆ’ βˆ’ PROPN fcis-6346 25 7 ( ( PUNCT fcis-6346 25 8 βˆ‘ βˆ‘ PUNCT fcis-6346 25 9 + + NOUN fcis-6346 25 10 π‘˜π‘–π‘‘π‘œπ‘‘ π‘˜π‘–π‘‘π‘œπ‘‘ NOUN fcis-6346 25 11 2π‘š 2π‘š NOUN fcis-6346 25 12 ) ) PUNCT fcis-6346 25 13 2 2 NUM fcis-6346 25 14 ] ] PUNCT fcis-6346 25 15 βˆ’ βˆ’ PROPN fcis-6346 26 1 [ [ PUNCT fcis-6346 26 2 βˆ‘ βˆ‘ PUNCT fcis-6346 26 3 𝑖𝑛 𝑖𝑛 DET fcis-6346 26 4 2π‘š 2π‘š NOUN fcis-6346 26 5 βˆ’ βˆ’ PROPN fcis-6346 26 6 ( ( PUNCT fcis-6346 26 7 βˆ‘ βˆ‘ PUNCT fcis-6346 26 8 π‘‘π‘œπ‘‘ π‘‘π‘œπ‘‘ NOUN fcis-6346 26 9 2π‘š 2π‘š NOUN fcis-6346 26 10 ) ) PUNCT fcis-6346 26 11 2 2 NUM fcis-6346 26 12 βˆ’ βˆ’ NOUN fcis-6346 26 13 ( ( PUNCT fcis-6346 26 14 π‘˜π‘– π‘˜π‘– NOUN fcis-6346 26 15 2π‘š 2π‘š NUM fcis-6346 26 16 ) ) PUNCT fcis-6346 26 17 2 2 NUM fcis-6346 26 18 ] ] PUNCT fcis-6346 26 19 ( ( PUNCT fcis-6346 26 20 2 2 X fcis-6346 26 21 ) ) PUNCT fcis-6346 26 22 βˆ‘ βˆ‘ ADP fcis-6346 26 23 𝑖𝑛 𝑖𝑛 X fcis-6346 26 24 is be AUX fcis-6346 26 25 the the DET fcis-6346 26 26 sum sum NOUN fcis-6346 26 27 of of ADP fcis-6346 26 28 weights weight NOUN fcis-6346 26 29 within within ADP fcis-6346 26 30 community community NOUN fcis-6346 26 31 𝐢 𝐢 PROPN fcis-6346 26 32 ; ; PUNCT fcis-6346 26 33 βˆ‘ βˆ‘ PUNCT fcis-6346 26 34 π‘‘π‘œπ‘‘ π‘‘π‘œπ‘‘ NOUN fcis-6346 26 35 is be AUX fcis-6346 26 36 community community NOUN fcis-6346 26 37 𝐢 𝐢 PROPN fcis-6346 26 38 sum sum NOUN fcis-6346 26 39 of of ADP fcis-6346 26 40 all all DET fcis-6346 26 41 connection connection NOUN fcis-6346 26 42 weights weight NOUN fcis-6346 26 43 ( ( PUNCT fcis-6346 26 44 including include VERB fcis-6346 26 45 community community NOUN fcis-6346 26 46 to to ADP fcis-6346 26 47 external external ADJ fcis-6346 26 48 links link NOUN fcis-6346 26 49 ) ) PUNCT fcis-6346 26 50 ; ; PUNCT fcis-6346 26 51 π‘˜π‘– π‘˜π‘– NOUN fcis-6346 26 52 is be AUX fcis-6346 26 53 the the DET fcis-6346 26 54 sum sum NOUN fcis-6346 26 55 of of ADP fcis-6346 26 56 all all DET fcis-6346 26 57 link link NOUN fcis-6346 26 58 weights weight NOUN fcis-6346 26 59 associated associate VERB fcis-6346 26 60 with with ADP fcis-6346 26 61 node node PROPN fcis-6346 26 62 𝑖 𝑖 SYM fcis-6346 26 63 ; ; PUNCT fcis-6346 26 64 π‘˜π‘–,𝑖𝑛 π‘˜π‘–,𝑖𝑛 PROPN fcis-6346 26 65 is be AUX fcis-6346 26 66 link link ADJ fcis-6346 26 67 from from ADP fcis-6346 26 68 node node PROPN fcis-6346 26 69 i i PRON fcis-6346 26 70 to to ADP fcis-6346 26 71 the the DET fcis-6346 26 72 sum sum NOUN fcis-6346 26 73 of of ADP fcis-6346 26 74 nodes node NOUN fcis-6346 26 75 in in ADP fcis-6346 26 76 community community NOUN fcis-6346 26 77 𝐢 𝐢 PROPN fcis-6346 26 78 ; ; PUNCT fcis-6346 26 79 π‘š π‘š X fcis-6346 26 80 is be AUX fcis-6346 26 81 the the DET fcis-6346 26 82 sum sum NOUN fcis-6346 26 83 of of ADP fcis-6346 26 84 all all PRON fcis-6346 26 85 link link NOUN fcis-6346 26 86 weights weight NOUN fcis-6346 26 87 in in ADP fcis-6346 26 88 the the DET fcis-6346 26 89 network network NOUN fcis-6346 26 90 . . PUNCT fcis-6346 27 1 step3 step3 PROPN fcis-6346 27 2 : : PUNCT fcis-6346 27 3 merge merge VERB fcis-6346 27 4 all all DET fcis-6346 27 5 communities community NOUN fcis-6346 27 6 to to PART fcis-6346 27 7 become become VERB fcis-6346 27 8 a a DET fcis-6346 27 9 new new ADJ fcis-6346 27 10 supernode supernode NOUN fcis-6346 27 11 with with ADP fcis-6346 27 12 edge edge NOUN fcis-6346 27 13 weights weight NOUN fcis-6346 27 14 that that PRON fcis-6346 27 15 sum sum VERB fcis-6346 27 16 the the DET fcis-6346 27 17 weights weight NOUN fcis-6346 27 18 of of ADP fcis-6346 27 19 all all DET fcis-6346 27 20 nodes node NOUN fcis-6346 27 21 within within ADP fcis-6346 27 22 the the DET fcis-6346 27 23 original original ADJ fcis-6346 27 24 community community NOUN fcis-6346 27 25 . . PUNCT fcis-6346 28 1 step4 step4 PROPN fcis-6346 28 2 : : PUNCT fcis-6346 29 1 if if SCONJ fcis-6346 29 2 the the DET fcis-6346 29 3 algorithm algorithm NOUN fcis-6346 29 4 has have AUX fcis-6346 29 5 reached reach VERB fcis-6346 29 6 its its PRON fcis-6346 29 7 goal goal NOUN fcis-6346 29 8 , , PUNCT fcis-6346 29 9 then then ADV fcis-6346 29 10 the the DET fcis-6346 29 11 algorithm algorithm NOUN fcis-6346 29 12 ends end VERB fcis-6346 29 13 , , PUNCT fcis-6346 29 14 otherwise otherwise ADV fcis-6346 29 15 repeat repeat VERB fcis-6346 29 16 steps step NOUN fcis-6346 29 17 1 1 NUM fcis-6346 29 18 - - SYM fcis-6346 29 19 3 3 NUM fcis-6346 29 20 . . NUM fcis-6346 29 21 2.2 2.2 NUM fcis-6346 29 22 . . PUNCT fcis-6346 30 1 user user NOUN fcis-6346 30 2 - - PUNCT fcis-6346 30 3 based base VERB fcis-6346 30 4 collaborative collaborative ADJ fcis-6346 30 5 filtering filtering NOUN fcis-6346 30 6 algorithm algorithm NOUN fcis-6346 30 7 the the DET fcis-6346 30 8 user user NOUN fcis-6346 30 9 - - PUNCT fcis-6346 30 10 based base VERB fcis-6346 30 11 collaborative collaborative ADJ fcis-6346 30 12 filtering filtering NOUN fcis-6346 30 13 algorithm algorithm NOUN fcis-6346 31 1 [ [ X fcis-6346 31 2 10 10 NUM fcis-6346 31 3 ] ] PUNCT fcis-6346 31 4 refers refer VERB fcis-6346 31 5 to to ADP fcis-6346 31 6 recommending recommend VERB fcis-6346 31 7 items item NOUN fcis-6346 31 8 to to ADP fcis-6346 31 9 the the DET fcis-6346 31 10 user user NOUN fcis-6346 31 11 that that PRON fcis-6346 31 12 the the DET fcis-6346 31 13 user user NOUN fcis-6346 31 14 likes like VERB fcis-6346 31 15 with with ADP fcis-6346 31 16 similar similar ADJ fcis-6346 31 17 interests interest NOUN fcis-6346 31 18 . . PUNCT fcis-6346 32 1 the the DET fcis-6346 32 2 general general ADJ fcis-6346 32 3 recommendation recommendation NOUN fcis-6346 32 4 process process NOUN fcis-6346 32 5 is be AUX fcis-6346 32 6 to to PART fcis-6346 32 7 recommend recommend VERB fcis-6346 32 8 to to ADP fcis-6346 32 9 user user NOUN fcis-6346 32 10 1 1 NUM fcis-6346 32 11 who who PRON fcis-6346 32 12 needs need VERB fcis-6346 32 13 to to PART fcis-6346 32 14 be be AUX fcis-6346 32 15 recommended recommend VERB fcis-6346 32 16 , , PUNCT fcis-6346 32 17 find find VERB fcis-6346 32 18 user user NOUN fcis-6346 32 19 2 2 NUM fcis-6346 32 20 similar similar ADJ fcis-6346 32 21 to to ADP fcis-6346 32 22 user user NOUN fcis-6346 32 23 1 1 NUM fcis-6346 32 24 , , PUNCT fcis-6346 32 25 and and CCONJ fcis-6346 32 26 recommend recommend VERB fcis-6346 32 27 items item NOUN fcis-6346 32 28 that that SCONJ fcis-6346 32 29 similar similar ADJ fcis-6346 32 30 user user NOUN fcis-6346 32 31 2 2 NUM fcis-6346 32 32 likes like NOUN fcis-6346 32 33 but but CCONJ fcis-6346 32 34 user user NOUN fcis-6346 32 35 1 1 NUM fcis-6346 32 36 has have AUX fcis-6346 32 37 not not PART fcis-6346 32 38 touched touch VERB fcis-6346 32 39 before before ADV fcis-6346 32 40 to to ADP fcis-6346 32 41 user user NOUN fcis-6346 32 42 1 1 NUM fcis-6346 32 43 , , PUNCT fcis-6346 32 44 so so SCONJ fcis-6346 32 45 as as SCONJ fcis-6346 32 46 to to PART fcis-6346 32 47 complete complete VERB fcis-6346 32 48 the the DET fcis-6346 32 49 recommendation recommendation NOUN fcis-6346 32 50 . . PUNCT fcis-6346 33 1 the the DET fcis-6346 33 2 detailed detailed ADJ fcis-6346 33 3 steps step NOUN fcis-6346 33 4 of of ADP fcis-6346 33 5 the the DET fcis-6346 33 6 user user NOUN fcis-6346 33 7 - - PUNCT fcis-6346 33 8 based base VERB fcis-6346 33 9 collaborative collaborative ADJ fcis-6346 33 10 filtering filtering NOUN fcis-6346 33 11 algorithm algorithm NOUN fcis-6346 33 12 are be AUX fcis-6346 33 13 : : PUNCT fcis-6346 33 14 step1 step1 PROPN fcis-6346 33 15 : : PUNCT fcis-6346 33 16 establish establish VERB fcis-6346 33 17 a a DET fcis-6346 33 18 user user NOUN fcis-6346 33 19 - - PUNCT fcis-6346 33 20 item item NOUN fcis-6346 33 21 scoring scoring NOUN fcis-6346 33 22 matrix matrix NOUN fcis-6346 33 23 based base VERB fcis-6346 33 24 on on ADP fcis-6346 33 25 the the DET fcis-6346 33 26 user user NOUN fcis-6346 33 27 's 's PART fcis-6346 33 28 historical historical ADJ fcis-6346 33 29 behavior behavior NOUN fcis-6346 33 30 data datum NOUN fcis-6346 33 31 , , PUNCT fcis-6346 33 32 and and CCONJ fcis-6346 33 33 map map VERB fcis-6346 33 34 the the DET fcis-6346 33 35 user user NOUN fcis-6346 33 36 's 's PART fcis-6346 33 37 rating rating NOUN fcis-6346 33 38 data datum NOUN fcis-6346 33 39 to to ADP fcis-6346 33 40 the the DET fcis-6346 33 41 elements element NOUN fcis-6346 33 42 in in ADP fcis-6346 33 43 the the DET fcis-6346 33 44 table table NOUN fcis-6346 33 45 , , PUNCT fcis-6346 33 46 as as SCONJ fcis-6346 33 47 shown show VERB fcis-6346 33 48 in in ADP fcis-6346 33 49 table table NOUN fcis-6346 33 50 1 1 NUM fcis-6346 33 51 below below ADV fcis-6346 33 52 : : PUNCT fcis-6346 33 53 table table NOUN fcis-6346 33 54 1 1 NUM fcis-6346 33 55 . . PUNCT fcis-6346 33 56 user user NOUN fcis-6346 33 57 - - PUNCT fcis-6346 33 58 item item NOUN fcis-6346 33 59 matrix matrix NOUN fcis-6346 33 60 user user NOUN fcis-6346 33 61 1 1 NUM fcis-6346 33 62 user user NOUN fcis-6346 33 63 2 2 NUM fcis-6346 33 64 user user NOUN fcis-6346 33 65 3 3 NUM fcis-6346 33 66 user user NOUN fcis-6346 33 67 4 4 NUM fcis-6346 33 68 item1 item1 NOUN fcis-6346 33 69 2 2 NUM fcis-6346 33 70 4 4 NUM fcis-6346 33 71 1 1 NUM fcis-6346 33 72 2 2 NUM fcis-6346 33 73 item2 item2 NOUN fcis-6346 33 74 3 3 NUM fcis-6346 33 75 5 5 NUM fcis-6346 33 76 item3 item3 PROPN fcis-6346 33 77 1 1 NUM fcis-6346 33 78 step2 step2 NOUN fcis-6346 33 79 : : PUNCT fcis-6346 33 80 calculate calculate NOUN fcis-6346 33 81 user user NOUN fcis-6346 33 82 similarity similarity NOUN fcis-6346 33 83 according accord VERB fcis-6346 33 84 to to ADP fcis-6346 33 85 table table NOUN fcis-6346 33 86 1 1 NUM fcis-6346 33 87 matrix matrix NOUN fcis-6346 33 88 . . PUNCT fcis-6346 34 1 cosine cosine NOUN fcis-6346 34 2 similarity similarity NOUN fcis-6346 34 3 is be AUX fcis-6346 34 4 a a DET fcis-6346 34 5 method method NOUN fcis-6346 34 6 of of ADP fcis-6346 34 7 evaluating evaluate VERB fcis-6346 34 8 the the DET fcis-6346 34 9 similarity similarity NOUN fcis-6346 34 10 of of ADP fcis-6346 34 11 two two NUM fcis-6346 34 12 vectors vector NOUN fcis-6346 34 13 by by ADP fcis-6346 34 14 calculating calculate VERB fcis-6346 34 15 their their PRON fcis-6346 34 16 angular angular ADJ fcis-6346 34 17 cosine cosine NOUN fcis-6346 34 18 value value NOUN fcis-6346 34 19 . . PUNCT fcis-6346 35 1 in in ADP fcis-6346 35 2 the the DET fcis-6346 35 3 user user NOUN fcis-6346 35 4 - - PUNCT fcis-6346 35 5 based base VERB fcis-6346 35 6 collaborative collaborative ADJ fcis-6346 35 7 filtering filtering NOUN fcis-6346 35 8 algorithm algorithm NOUN fcis-6346 35 9 , , PUNCT fcis-6346 35 10 cosine cosine NOUN fcis-6346 35 11 similarity similarity NOUN fcis-6346 35 12 represents represent VERB fcis-6346 35 13 the the DET fcis-6346 35 14 size size NOUN fcis-6346 35 15 of of ADP fcis-6346 35 16 the the DET fcis-6346 35 17 vector vector NOUN fcis-6346 35 18 angle angle NOUN fcis-6346 35 19 between between ADP fcis-6346 35 20 the the DET fcis-6346 35 21 user user NOUN fcis-6346 35 22 vector vector NOUN fcis-6346 35 23 𝑖 𝑖 PROPN fcis-6346 35 24 and and CCONJ fcis-6346 35 25 the the DET fcis-6346 35 26 user user NOUN fcis-6346 35 27 vector vector NOUN fcis-6346 35 28 𝑗 𝑗 PROPN fcis-6346 35 29 , , PUNCT fcis-6346 35 30 which which PRON fcis-6346 35 31 can can AUX fcis-6346 35 32 be be AUX fcis-6346 35 33 expressed express VERB fcis-6346 35 34 by by ADP fcis-6346 35 35 the the DET fcis-6346 35 36 following follow VERB fcis-6346 35 37 equation equation NOUN fcis-6346 35 38 3 3 NUM fcis-6346 35 39 : : PUNCT fcis-6346 35 40 π‘ π‘–π‘š(𝑖 π‘ π‘–π‘š(𝑖 PROPN fcis-6346 35 41 , , PUNCT fcis-6346 35 42 𝑗 𝑗 NOUN fcis-6346 35 43 ) ) PUNCT fcis-6346 36 1 = = SYM fcis-6346 36 2 cos(𝑖 cos(𝑖 PROPN fcis-6346 36 3 , , PUNCT fcis-6346 36 4 𝑗 𝑗 NOUN fcis-6346 36 5 ) ) PUNCT fcis-6346 36 6 = = NOUN fcis-6346 36 7 π‘–βˆ™π‘— π‘–βˆ™π‘— X fcis-6346 36 8 ||𝑖||βˆ™||𝑗|| ||𝑖||βˆ™||𝑗|| PROPN fcis-6346 36 9 ( ( PUNCT fcis-6346 36 10 3 3 NUM fcis-6346 36 11 ) ) PUNCT fcis-6346 36 12 if if SCONJ fcis-6346 36 13 both both CCONJ fcis-6346 36 14 the the DET fcis-6346 36 15 user user NOUN fcis-6346 36 16 vector vector NOUN fcis-6346 36 17 i i PRON fcis-6346 36 18 and and CCONJ fcis-6346 36 19 the the DET fcis-6346 36 20 user user NOUN fcis-6346 36 21 vector vector PROPN fcis-6346 36 22 j j PROPN fcis-6346 36 23 are be AUX fcis-6346 36 24 ndimensional ndimensional ADJ fcis-6346 36 25 , , PUNCT fcis-6346 36 26 then then ADV fcis-6346 36 27 cosine cosine NOUN fcis-6346 36 28 similarity similarity NOUN fcis-6346 36 29 can can AUX fcis-6346 36 30 be be AUX fcis-6346 36 31 expressed express VERB fcis-6346 36 32 as as ADP fcis-6346 36 33 the the DET fcis-6346 36 34 following follow VERB fcis-6346 36 35 equation equation NOUN fcis-6346 36 36 : : PUNCT fcis-6346 36 37 cos(πœƒ cos(πœƒ X fcis-6346 36 38 ) ) PUNCT fcis-6346 36 39 = = PUNCT fcis-6346 36 40 βˆ‘ βˆ‘ PROPN fcis-6346 36 41 π‘₯1π‘˜π‘₯2π‘˜ π‘₯1π‘˜π‘₯2π‘˜ VERB fcis-6346 36 42 𝑛 𝑛 PRON fcis-6346 36 43 π‘˜=1 π‘˜=1 PROPN fcis-6346 36 44 βˆšβˆ‘ βˆšβˆ‘ NOUN fcis-6346 36 45 π‘₯1π‘˜ π‘₯1π‘˜ PROPN fcis-6346 36 46 2𝑛 2𝑛 PROPN fcis-6346 36 47 π‘˜=1 π‘˜=1 ADJ fcis-6346 36 48 βˆšβˆ‘ βˆšβˆ‘ PUNCT fcis-6346 36 49 π‘₯2π‘˜ π‘₯2π‘˜ X fcis-6346 36 50 2𝑛 2𝑛 PROPN fcis-6346 36 51 π‘˜=1 π‘˜=1 PRON fcis-6346 36 52 ( ( PUNCT fcis-6346 36 53 4 4 X fcis-6346 36 54 ) ) PUNCT fcis-6346 36 55 step3 step3 NOUN fcis-6346 36 56 : : PUNCT fcis-6346 36 57 sort sort ADV fcis-6346 36 58 according accord VERB fcis-6346 36 59 to to ADP fcis-6346 36 60 the the DET fcis-6346 36 61 scores score NOUN fcis-6346 36 62 of of ADP fcis-6346 36 63 the the DET fcis-6346 36 64 items item NOUN fcis-6346 36 65 in in ADP fcis-6346 36 66 the the DET fcis-6346 36 67 above above ADJ fcis-6346 36 68 formula formula NOUN fcis-6346 36 69 , , PUNCT fcis-6346 36 70 and and CCONJ fcis-6346 36 71 select select VERB fcis-6346 36 72 the the DET fcis-6346 36 73 n n NOUN fcis-6346 36 74 items item NOUN fcis-6346 36 75 with with ADP fcis-6346 36 76 the the DET fcis-6346 36 77 highest high ADJ fcis-6346 36 78 rating rating NOUN fcis-6346 36 79 to to PART fcis-6346 36 80 recommend recommend VERB fcis-6346 36 81 to to ADP fcis-6346 36 82 the the DET fcis-6346 36 83 target target NOUN fcis-6346 36 84 user user NOUN fcis-6346 36 85 . . PUNCT fcis-6346 37 1 the the DET fcis-6346 37 2 following follow VERB fcis-6346 37 3 figure figure NOUN fcis-6346 37 4 shows show VERB fcis-6346 37 5 the the DET fcis-6346 37 6 recommendation recommendation NOUN fcis-6346 37 7 algorithm algorithm NOUN fcis-6346 37 8 process process NOUN fcis-6346 37 9 : : PUNCT fcis-6346 37 10 figure figure NOUN fcis-6346 37 11 1 1 NUM fcis-6346 37 12 . . PUNCT fcis-6346 37 13 recommendation recommendation NOUN fcis-6346 37 14 algorithm algorithm NOUN fcis-6346 37 15 process process NOUN fcis-6346 37 16 . . PUNCT fcis-6346 38 1 3 3 X fcis-6346 38 2 . . NOUN fcis-6346 38 3 results result NOUN fcis-6346 38 4 and and CCONJ fcis-6346 38 5 analysis analysis NOUN fcis-6346 38 6 3.1 3.1 NUM fcis-6346 38 7 . . PUNCT fcis-6346 39 1 introduction introduction NOUN fcis-6346 39 2 to to ADP fcis-6346 39 3 datasets dataset NOUN fcis-6346 39 4 in in ADP fcis-6346 39 5 order order NOUN fcis-6346 39 6 to to PART fcis-6346 39 7 verify verify VERB fcis-6346 39 8 the the DET fcis-6346 39 9 performance performance NOUN fcis-6346 39 10 of of ADP fcis-6346 39 11 the the DET fcis-6346 39 12 algorithm algorithm NOUN fcis-6346 39 13 in in ADP fcis-6346 39 14 this this DET fcis-6346 39 15 paper paper NOUN fcis-6346 39 16 , , PUNCT fcis-6346 39 17 the the DET fcis-6346 39 18 douban douban NOUN fcis-6346 39 19 dataset dataset NOUN fcis-6346 39 20 will will AUX fcis-6346 39 21 be be AUX fcis-6346 39 22 used use VERB fcis-6346 39 23 as as ADP fcis-6346 39 24 the the DET fcis-6346 39 25 experimental experimental ADJ fcis-6346 39 26 dataset dataset NOUN fcis-6346 39 27 . . PUNCT fcis-6346 40 1 the the DET fcis-6346 40 2 douban douban PROPN fcis-6346 40 3 dataset dataset NOUN fcis-6346 40 4 ( ( PUNCT fcis-6346 40 5 https://www.librec.net/datasets https://www.librec.net/dataset NOUN fcis-6346 40 6 ) ) PUNCT fcis-6346 40 7 uses use VERB fcis-6346 40 8 a a DET fcis-6346 40 9 5 5 NUM fcis-6346 40 10 - - PUNCT fcis-6346 40 11 star star NOUN fcis-6346 40 12 scoring scoring NOUN fcis-6346 40 13 mechanism mechanism NOUN fcis-6346 40 14 . . PUNCT fcis-6346 41 1 there there PRON fcis-6346 41 2 are be VERB fcis-6346 41 3 7375 7375 NUM fcis-6346 41 4 user user NOUN fcis-6346 41 5 data datum NOUN fcis-6346 41 6 and and CCONJ fcis-6346 41 7 99746 99746 NUM fcis-6346 41 8 movie movie NOUN fcis-6346 41 9 data datum NOUN fcis-6346 41 10 in in ADP fcis-6346 41 11 the the DET fcis-6346 41 12 dataset dataset NOUN fcis-6346 41 13 , , PUNCT fcis-6346 41 14 278483 278483 NUM fcis-6346 41 15 ratings rating NOUN fcis-6346 41 16 , , PUNCT fcis-6346 41 17 and and CCONJ fcis-6346 41 18 111761 111761 NUM fcis-6346 41 19 social social ADJ fcis-6346 41 20 relationships relationship NOUN fcis-6346 41 21 , , PUNCT fcis-6346 41 22 of of ADP fcis-6346 41 23 which which PRON fcis-6346 41 24 there there PRON fcis-6346 41 25 are be VERB fcis-6346 41 26 a a DET fcis-6346 41 27 total total NOUN fcis-6346 41 28 of of ADP fcis-6346 41 29 15 15 NUM fcis-6346 41 30 movie movie NOUN fcis-6346 41 31 types type NOUN fcis-6346 41 32 in in ADP fcis-6346 41 33 the the DET fcis-6346 41 34 douban douban NOUN fcis-6346 41 35 movie movie NOUN fcis-6346 41 36 dataset dataset NOUN fcis-6346 41 37 . . PUNCT fcis-6346 42 1 this this PRON fcis-6346 42 2 is be AUX fcis-6346 42 3 shown show VERB fcis-6346 42 4 in in ADP fcis-6346 42 5 table table NOUN fcis-6346 42 6 2 2 NUM fcis-6346 42 7 below below ADV fcis-6346 42 8 : : PUNCT fcis-6346 42 9 table table NOUN fcis-6346 42 10 2 2 NUM fcis-6346 42 11 . . PUNCT fcis-6346 42 12 douban douban NOUN fcis-6346 42 13 movie movie NOUN fcis-6346 42 14 dataset dataset NOUN fcis-6346 42 15 user user NOUN fcis-6346 42 16 movie movie NOUN fcis-6346 42 17 ratings rating NOUN fcis-6346 42 18 social social ADJ fcis-6346 42 19 relationship relationship NOUN fcis-6346 42 20 movie movie NOUN fcis-6346 42 21 genre genre NOUN fcis-6346 42 22 129490 129490 NUM fcis-6346 42 23 99746 99746 NUM fcis-6346 42 24 278483 278483 NUM fcis-6346 42 25 111761 111761 NUM fcis-6346 42 26 15 15 NUM fcis-6346 42 27 this this DET fcis-6346 42 28 experiment experiment NOUN fcis-6346 42 29 adopts adopt VERB fcis-6346 42 30 cross cross ADJ fcis-6346 42 31 - - ADJ fcis-6346 42 32 validation validation ADJ fcis-6346 42 33 technology technology NOUN fcis-6346 42 34 to to PART fcis-6346 42 35 avoid avoid VERB fcis-6346 42 36 the the DET fcis-6346 42 37 chance chance NOUN fcis-6346 42 38 of of ADP fcis-6346 42 39 experimental experimental ADJ fcis-6346 42 40 results result NOUN fcis-6346 42 41 . . PUNCT fcis-6346 43 1 the the DET fcis-6346 43 2 dataset dataset NOUN fcis-6346 43 3 was be AUX fcis-6346 43 4 divided divide VERB fcis-6346 43 5 into into ADP fcis-6346 43 6 5 5 NUM fcis-6346 43 7 parts part NOUN fcis-6346 43 8 , , PUNCT fcis-6346 43 9 80 80 NUM fcis-6346 43 10 % % NOUN fcis-6346 43 11 of of ADP fcis-6346 43 12 the the DET fcis-6346 43 13 data datum NOUN fcis-6346 43 14 was be AUX fcis-6346 43 15 randomly randomly ADV fcis-6346 43 16 selected select VERB fcis-6346 43 17 as as ADP fcis-6346 43 18 the the DET fcis-6346 43 19 training training NOUN fcis-6346 43 20 set set NOUN fcis-6346 43 21 , , PUNCT fcis-6346 43 22 20 20 NUM fcis-6346 43 23 % % NOUN fcis-6346 43 24 of of ADP fcis-6346 43 25 the the DET fcis-6346 43 26 data datum NOUN fcis-6346 43 27 was be AUX fcis-6346 43 28 used use VERB fcis-6346 43 29 as as ADP fcis-6346 43 30 the the DET fcis-6346 43 31 test test NOUN fcis-6346 43 32 set set NOUN fcis-6346 43 33 , , PUNCT fcis-6346 43 34 and and CCONJ fcis-6346 43 35 the the DET fcis-6346 43 36 average average NOUN fcis-6346 43 37 of of ADP fcis-6346 43 38 the the DET fcis-6346 43 39 five five NUM fcis-6346 43 40 experiments experiment NOUN fcis-6346 43 41 was be AUX fcis-6346 43 42 taken take VERB fcis-6346 43 43 as as ADP fcis-6346 43 44 the the DET fcis-6346 43 45 final final ADJ fcis-6346 43 46 result result NOUN fcis-6346 43 47 of of ADP fcis-6346 43 48 the the DET fcis-6346 43 49 experiment experiment NOUN fcis-6346 43 50 . . PUNCT fcis-6346 44 1 3.2 3.2 NUM fcis-6346 44 2 . . PUNCT fcis-6346 44 3 evaluation evaluation NOUN fcis-6346 44 4 indicators indicator NOUN fcis-6346 44 5 since since SCONJ fcis-6346 44 6 the the DET fcis-6346 44 7 beginning beginning NOUN fcis-6346 44 8 of of ADP fcis-6346 44 9 the the DET fcis-6346 44 10 recommendation recommendation NOUN fcis-6346 44 11 system system NOUN fcis-6346 44 12 research research NOUN fcis-6346 44 13 , , PUNCT fcis-6346 44 14 the the DET fcis-6346 44 15 evaluation evaluation NOUN fcis-6346 44 16 of of ADP fcis-6346 44 17 prediction prediction NOUN fcis-6346 44 18 and and CCONJ fcis-6346 44 19 recommendation recommendation NOUN fcis-6346 44 20 results result NOUN fcis-6346 44 21 has have AUX fcis-6346 44 22 been be AUX fcis-6346 44 23 a a DET fcis-6346 44 24 very very ADV fcis-6346 44 25 important important ADJ fcis-6346 44 26 link link NOUN fcis-6346 44 27 , , PUNCT fcis-6346 44 28 and and CCONJ fcis-6346 44 29 the the DET fcis-6346 44 30 advantages advantage NOUN fcis-6346 44 31 and and CCONJ fcis-6346 44 32 disadvantages disadvantage NOUN fcis-6346 44 33 of of ADP fcis-6346 44 34 a a DET fcis-6346 44 35 recommendation recommendation NOUN fcis-6346 44 36 algorithm algorithm NOUN fcis-6346 44 37 are be AUX fcis-6346 44 38 directly directly ADV fcis-6346 44 39 reflected reflect VERB fcis-6346 44 40 in in ADP fcis-6346 44 41 its its PRON fcis-6346 44 42 performance performance NOUN fcis-6346 44 43 on on ADP fcis-6346 44 44 these these DET fcis-6346 44 45 evaluation evaluation NOUN fcis-6346 44 46 indicators indicator NOUN fcis-6346 44 47 . . PUNCT fcis-6346 45 1 common common ADJ fcis-6346 45 2 scoring scoring NOUN fcis-6346 45 3 prediction prediction NOUN fcis-6346 45 4 tasks task NOUN fcis-6346 45 5 are be AUX fcis-6346 45 6 generally generally ADV fcis-6346 45 7 calculated calculate VERB fcis-6346 45 8 by by ADP fcis-6346 45 9 rmse rmse PROPN fcis-6346 45 10 and and CCONJ fcis-6346 45 11 mae mae PROPN fcis-6346 45 12 . . PROPN fcis-6346 45 13 see see VERB fcis-6346 45 14 the the DET fcis-6346 45 15 following follow VERB fcis-6346 45 16 formula formula NOUN fcis-6346 45 17 5 5 NUM fcis-6346 45 18 and and CCONJ fcis-6346 45 19 6 6 NUM fcis-6346 45 20 : : PUNCT fcis-6346 45 21 𝑀𝐴𝐸 𝑀𝐴𝐸 PROPN fcis-6346 45 22 = = SYM fcis-6346 45 23 βˆ‘ βˆ‘ PROPN fcis-6346 45 24 |π‘Ÿπ‘’π‘–βˆ’ |π‘Ÿπ‘’π‘–βˆ’ NOUN fcis-6346 45 25 οΏ½ οΏ½ NOUN fcis-6346 45 26 Μ‚ Μ‚ VERB fcis-6346 45 27 οΏ½ οΏ½ NOUN fcis-6346 45 28 𝑒𝑖|𝑒,π‘–βˆˆπ‘‡ 𝑒𝑖|𝑒,π‘–βˆˆπ‘‡ ADJ fcis-6346 45 29 |𝑇| |𝑇| NOUN fcis-6346 45 30 ( ( PUNCT fcis-6346 45 31 5 5 NUM fcis-6346 45 32 ) ) PUNCT fcis-6346 45 33 𝑅𝑀𝑆𝐸 𝑅𝑀𝑆𝐸 NOUN fcis-6346 45 34 = = PUNCT fcis-6346 46 1 √ √ NUM fcis-6346 46 2 βˆ‘ βˆ‘ PROPN fcis-6346 46 3 ( ( PUNCT fcis-6346 46 4 π‘Ÿπ‘’π‘–βˆ’ π‘Ÿπ‘’π‘–βˆ’ NOUN fcis-6346 46 5 οΏ½ οΏ½ NOUN fcis-6346 46 6 Μ‚ Μ‚ SYM fcis-6346 46 7 οΏ½ οΏ½ NOUN fcis-6346 46 8 𝑒𝑖)2 𝑒𝑖)2 PROPN fcis-6346 46 9 𝑒,π‘–βˆˆπ‘‡ 𝑒,π‘–βˆˆπ‘‡ PROPN fcis-6346 46 10 |𝑇| |𝑇| PROPN fcis-6346 46 11 ( ( PUNCT fcis-6346 46 12 6 6 NUM fcis-6346 46 13 ) ) PUNCT fcis-6346 46 14 3.3 3.3 NUM fcis-6346 46 15 . . PUNCT fcis-6346 47 1 model model NOUN fcis-6346 47 2 comparison comparison NOUN fcis-6346 47 3 in in ADP fcis-6346 47 4 order order NOUN fcis-6346 47 5 to to PART fcis-6346 47 6 verify verify VERB fcis-6346 47 7 the the DET fcis-6346 47 8 recommendation recommendation NOUN fcis-6346 47 9 efficiency efficiency NOUN fcis-6346 47 10 of of ADP fcis-6346 47 11 the the DET fcis-6346 47 12 122 122 NUM fcis-6346 47 13 algorithm algorithm NOUN fcis-6346 47 14 proposed propose VERB fcis-6346 47 15 in in ADP fcis-6346 47 16 this this DET fcis-6346 47 17 paper paper NOUN fcis-6346 47 18 , , PUNCT fcis-6346 47 19 the the DET fcis-6346 47 20 experiment experiment NOUN fcis-6346 47 21 in in ADP fcis-6346 47 22 this this DET fcis-6346 47 23 paper paper NOUN fcis-6346 47 24 will will AUX fcis-6346 47 25 compare compare VERB fcis-6346 47 26 with with ADP fcis-6346 47 27 the the DET fcis-6346 47 28 results result NOUN fcis-6346 47 29 of of ADP fcis-6346 47 30 multiple multiple ADJ fcis-6346 47 31 recommendation recommendation NOUN fcis-6346 47 32 algorithms algorithm NOUN fcis-6346 47 33 similar similar ADJ fcis-6346 47 34 to to ADP fcis-6346 47 35 this this DET fcis-6346 47 36 paper paper NOUN fcis-6346 47 37 , , PUNCT fcis-6346 47 38 and and CCONJ fcis-6346 47 39 the the DET fcis-6346 47 40 recommended recommend VERB fcis-6346 47 41 evaluation evaluation NOUN fcis-6346 47 42 indicators indicator NOUN fcis-6346 47 43 of of ADP fcis-6346 47 44 their their PRON fcis-6346 47 45 respective respective ADJ fcis-6346 47 46 algorithms algorithm NOUN fcis-6346 47 47 are be AUX fcis-6346 47 48 obtained obtain VERB fcis-6346 47 49 . . PUNCT fcis-6346 48 1 ( ( PUNCT fcis-6346 48 2 1 1 X fcis-6346 48 3 ) ) PUNCT fcis-6346 48 4 uk uk PROPN fcis-6346 48 5 - - PUNCT fcis-6346 48 6 means mean VERB fcis-6346 48 7 [ [ X fcis-6346 48 8 11 11 NUM fcis-6346 48 9 ] ] PUNCT fcis-6346 48 10 the the DET fcis-6346 48 11 k k NOUN fcis-6346 48 12 - - PUNCT fcis-6346 48 13 means means NOUN fcis-6346 48 14 clustering cluster VERB fcis-6346 48 15 [ [ X fcis-6346 48 16 12 12 NUM fcis-6346 48 17 ] ] PUNCT fcis-6346 48 18 method method NOUN fcis-6346 48 19 is be AUX fcis-6346 48 20 used use VERB fcis-6346 48 21 to to PART fcis-6346 48 22 cluster cluster VERB fcis-6346 48 23 all all DET fcis-6346 48 24 users user NOUN fcis-6346 48 25 of of ADP fcis-6346 48 26 the the DET fcis-6346 48 27 recommender recommender NOUN fcis-6346 48 28 system system NOUN fcis-6346 48 29 , , PUNCT fcis-6346 48 30 and and CCONJ fcis-6346 48 31 then then ADV fcis-6346 48 32 find find VERB fcis-6346 48 33 the the DET fcis-6346 48 34 similar similar ADJ fcis-6346 48 35 user user NOUN fcis-6346 48 36 collection collection NOUN fcis-6346 48 37 of of ADP fcis-6346 48 38 the the DET fcis-6346 48 39 target target NOUN fcis-6346 48 40 user user NOUN fcis-6346 48 41 in in ADP fcis-6346 48 42 the the DET fcis-6346 48 43 cluster cluster NOUN fcis-6346 48 44 to to PART fcis-6346 48 45 which which PRON fcis-6346 48 46 the the DET fcis-6346 48 47 user user NOUN fcis-6346 48 48 belongs belong VERB fcis-6346 48 49 , , PUNCT fcis-6346 48 50 and and CCONJ fcis-6346 48 51 finally finally ADV fcis-6346 48 52 complete complete VERB fcis-6346 48 53 the the DET fcis-6346 48 54 recommendation recommendation NOUN fcis-6346 48 55 according accord VERB fcis-6346 48 56 to to ADP fcis-6346 48 57 the the DET fcis-6346 48 58 similar similar ADJ fcis-6346 48 59 user user NOUN fcis-6346 48 60 . . PUNCT fcis-6346 49 1 ( ( PUNCT fcis-6346 49 2 2 2 X fcis-6346 49 3 ) ) PUNCT fcis-6346 49 4 svd++[13 svd++[13 PROPN fcis-6346 49 5 ] ] PUNCT fcis-6346 50 1 the the DET fcis-6346 50 2 svd++ svd++ PROPN fcis-6346 50 3 is be AUX fcis-6346 50 4 based base VERB fcis-6346 50 5 on on ADP fcis-6346 50 6 the the DET fcis-6346 50 7 improved improved ADJ fcis-6346 50 8 algorithm algorithm NOUN fcis-6346 50 9 of of ADP fcis-6346 50 10 singular singular ADJ fcis-6346 50 11 value value NOUN fcis-6346 50 12 decomposition decomposition NOUN fcis-6346 50 13 , , PUNCT fcis-6346 50 14 the the DET fcis-6346 50 15 user user NOUN fcis-6346 50 16 - - PUNCT fcis-6346 50 17 item item NOUN fcis-6346 50 18 scoring scoring NOUN fcis-6346 50 19 matrix matrix NOUN fcis-6346 50 20 is be AUX fcis-6346 50 21 used use VERB fcis-6346 50 22 to to PART fcis-6346 50 23 solve solve VERB fcis-6346 50 24 the the DET fcis-6346 50 25 sparsity sparsity NOUN fcis-6346 50 26 problem problem NOUN fcis-6346 50 27 of of ADP fcis-6346 50 28 data datum NOUN fcis-6346 50 29 to to ADP fcis-6346 50 30 a a DET fcis-6346 50 31 certain certain ADJ fcis-6346 50 32 extent extent NOUN fcis-6346 50 33 . . PUNCT fcis-6346 51 1 ( ( PUNCT fcis-6346 51 2 3 3 X fcis-6346 51 3 ) ) PUNCT fcis-6346 51 4 louvain louvain NOUN fcis-6346 51 5 - - PUNCT fcis-6346 51 6 cf cf NOUN fcis-6346 52 1 the the DET fcis-6346 52 2 algorithm algorithm NOUN fcis-6346 52 3 presented present VERB fcis-6346 52 4 in in ADP fcis-6346 52 5 this this DET fcis-6346 52 6 paper paper NOUN fcis-6346 52 7 , , PUNCT fcis-6346 52 8 collaborative collaborative ADJ fcis-6346 52 9 filtering filtering NOUN fcis-6346 52 10 recommendation recommendation NOUN fcis-6346 52 11 algorithm algorithm NOUN fcis-6346 52 12 based base VERB fcis-6346 52 13 on on ADP fcis-6346 52 14 louvain louvain NOUN fcis-6346 52 15 algorithm algorithm NOUN fcis-6346 52 16 in in ADP fcis-6346 52 17 this this DET fcis-6346 52 18 experiment experiment NOUN fcis-6346 52 19 , , PUNCT fcis-6346 52 20 the the DET fcis-6346 52 21 douban douban NOUN fcis-6346 52 22 dataset dataset NOUN fcis-6346 52 23 is be AUX fcis-6346 52 24 divided divide VERB fcis-6346 52 25 into into ADP fcis-6346 52 26 five five NUM fcis-6346 52 27 parts part NOUN fcis-6346 52 28 , , PUNCT fcis-6346 52 29 one one NUM fcis-6346 52 30 of of ADP fcis-6346 52 31 which which PRON fcis-6346 52 32 is be AUX fcis-6346 52 33 the the DET fcis-6346 52 34 test test NOUN fcis-6346 52 35 set set VERB fcis-6346 52 36 and and CCONJ fcis-6346 52 37 the the DET fcis-6346 52 38 other other ADJ fcis-6346 52 39 four four NUM fcis-6346 52 40 copies copy NOUN fcis-6346 52 41 are be AUX fcis-6346 52 42 used use VERB fcis-6346 52 43 as as ADP fcis-6346 52 44 the the DET fcis-6346 52 45 training training NOUN fcis-6346 52 46 set set NOUN fcis-6346 52 47 . . PUNCT fcis-6346 53 1 calculate calculate VERB fcis-6346 53 2 the the DET fcis-6346 53 3 experimental experimental ADJ fcis-6346 53 4 results result NOUN fcis-6346 53 5 on on ADP fcis-6346 53 6 five five NUM fcis-6346 53 7 datasets dataset NOUN fcis-6346 53 8 and and CCONJ fcis-6346 53 9 take take VERB fcis-6346 53 10 the the DET fcis-6346 53 11 average average NOUN fcis-6346 53 12 to to PART fcis-6346 53 13 get get VERB fcis-6346 53 14 the the DET fcis-6346 53 15 final final ADJ fcis-6346 53 16 result result NOUN fcis-6346 53 17 . . PUNCT fcis-6346 54 1 the the DET fcis-6346 54 2 experimental experimental ADJ fcis-6346 54 3 results result NOUN fcis-6346 54 4 are be AUX fcis-6346 54 5 shown show VERB fcis-6346 54 6 in in ADP fcis-6346 54 7 figures figure NOUN fcis-6346 54 8 2 2 NUM fcis-6346 54 9 and and CCONJ fcis-6346 54 10 3 3 NUM fcis-6346 54 11 below below ADP fcis-6346 54 12 and and CCONJ fcis-6346 54 13 table table VERB fcis-6346 54 14 3 3 NUM fcis-6346 54 15 : : PUNCT fcis-6346 54 16 figure figure NOUN fcis-6346 54 17 2 2 NUM fcis-6346 54 18 . . PUNCT fcis-6346 55 1 the the DET fcis-6346 55 2 mae mae PROPN fcis-6346 55 3 value value NOUN fcis-6346 55 4 compares compare VERB fcis-6346 55 5 the the DET fcis-6346 55 6 results result NOUN fcis-6346 55 7 with with ADP fcis-6346 55 8 other other ADJ fcis-6346 55 9 algorithms algorithm NOUN fcis-6346 55 10 . . PUNCT fcis-6346 56 1 figure figure VERB fcis-6346 56 2 3 3 NUM fcis-6346 56 3 . . PUNCT fcis-6346 57 1 the the DET fcis-6346 57 2 rmse rmse ADJ fcis-6346 57 3 value value NOUN fcis-6346 57 4 compares compare VERB fcis-6346 57 5 the the DET fcis-6346 57 6 results result NOUN fcis-6346 57 7 with with ADP fcis-6346 57 8 other other ADJ fcis-6346 57 9 algorithms algorithm NOUN fcis-6346 57 10 . . PUNCT fcis-6346 58 1 table table NOUN fcis-6346 58 2 3 3 NUM fcis-6346 58 3 . . PUNCT fcis-6346 59 1 the the DET fcis-6346 59 2 mae mae PROPN fcis-6346 59 3 and and CCONJ fcis-6346 59 4 rmse rmse ADJ fcis-6346 59 5 value value NOUN fcis-6346 59 6 compare compare NOUN fcis-6346 59 7 of of ADP fcis-6346 59 8 the the DET fcis-6346 59 9 experiment experiment NOUN fcis-6346 59 10 name name NOUN fcis-6346 59 11 uk uk PROPN fcis-6346 59 12 - - PUNCT fcis-6346 59 13 means mean VERB fcis-6346 59 14 svd++ svd++ PROPN fcis-6346 59 15 louvain louvain NOUN fcis-6346 59 16 - - PUNCT fcis-6346 59 17 cf cf NOUN fcis-6346 59 18 mae mae NOUN fcis-6346 59 19 0.8746 0.8746 NUM fcis-6346 59 20 0.8172 0.8172 NUM fcis-6346 59 21 0.8018 0.8018 NUM fcis-6346 59 22 rmse rmse NOUN fcis-6346 59 23 1.0182 1.0182 NUM fcis-6346 59 24 0.9263 0.9263 NUM fcis-6346 59 25 0.9126 0.9126 NOUN fcis-6346 59 26 this this DET fcis-6346 59 27 experimental experimental ADJ fcis-6346 59 28 result result NOUN fcis-6346 59 29 proves prove VERB fcis-6346 59 30 that that SCONJ fcis-6346 59 31 the the DET fcis-6346 59 32 louvain louvain NOUN fcis-6346 59 33 - - PUNCT fcis-6346 59 34 cf cf NOUN fcis-6346 59 35 algorithm algorithm NOUN fcis-6346 59 36 is be AUX fcis-6346 59 37 superior superior ADJ fcis-6346 59 38 to to ADP fcis-6346 59 39 the the DET fcis-6346 59 40 other other ADJ fcis-6346 59 41 two two NUM fcis-6346 59 42 algorithms algorithm NOUN fcis-6346 59 43 4 4 NUM fcis-6346 59 44 . . PUNCT fcis-6346 60 1 conclusion conclusion NOUN fcis-6346 60 2 ( ( PUNCT fcis-6346 60 3 1 1 X fcis-6346 60 4 ) ) PUNCT fcis-6346 60 5 the the DET fcis-6346 60 6 algorithm algorithm NOUN fcis-6346 60 7 in in ADP fcis-6346 60 8 this this DET fcis-6346 60 9 paper paper NOUN fcis-6346 60 10 combines combine VERB fcis-6346 60 11 the the DET fcis-6346 60 12 user user NOUN fcis-6346 60 13 - - PUNCT fcis-6346 60 14 based base VERB fcis-6346 60 15 collaborative collaborative ADJ fcis-6346 60 16 filtering filtering NOUN fcis-6346 60 17 algorithm algorithm NOUN fcis-6346 60 18 with with ADP fcis-6346 60 19 the the DET fcis-6346 60 20 similarity similarity NOUN fcis-6346 60 21 calculation calculation NOUN fcis-6346 60 22 of of ADP fcis-6346 60 23 the the DET fcis-6346 60 24 community community NOUN fcis-6346 60 25 - - PUNCT fcis-6346 60 26 based base VERB fcis-6346 60 27 collaborative collaborative ADJ fcis-6346 60 28 filtering filtering NOUN fcis-6346 60 29 algorithm algorithm NOUN fcis-6346 60 30 , , PUNCT fcis-6346 60 31 and and CCONJ fcis-6346 60 32 integrates integrate VERB fcis-6346 60 33 the the DET fcis-6346 60 34 two two NUM fcis-6346 60 35 dimensions dimension NOUN fcis-6346 60 36 of of ADP fcis-6346 60 37 user user NOUN fcis-6346 60 38 item item NOUN fcis-6346 60 39 type type NOUN fcis-6346 60 40 preference preference NOUN fcis-6346 60 41 and and CCONJ fcis-6346 60 42 score score NOUN fcis-6346 60 43 similarity similarity NOUN fcis-6346 60 44 to to PART fcis-6346 60 45 achieve achieve VERB fcis-6346 60 46 the the DET fcis-6346 60 47 purpose purpose NOUN fcis-6346 60 48 of of ADP fcis-6346 60 49 improving improve VERB fcis-6346 60 50 user user NOUN fcis-6346 60 51 similarity similarity NOUN fcis-6346 60 52 and and CCONJ fcis-6346 60 53 improving improve VERB fcis-6346 60 54 recommendation recommendation NOUN fcis-6346 60 55 effect effect NOUN fcis-6346 60 56 . . PUNCT fcis-6346 61 1 finally finally ADV fcis-6346 61 2 , , PUNCT fcis-6346 61 3 using use VERB fcis-6346 61 4 the the DET fcis-6346 61 5 collection collection NOUN fcis-6346 61 6 of of ADP fcis-6346 61 7 neighbors neighbor NOUN fcis-6346 61 8 in in ADP fcis-6346 61 9 the the DET fcis-6346 61 10 community community NOUN fcis-6346 61 11 , , PUNCT fcis-6346 61 12 the the DET fcis-6346 61 13 target target NOUN fcis-6346 61 14 unscored unscored ADJ fcis-6346 61 15 items item NOUN fcis-6346 61 16 are be AUX fcis-6346 61 17 predicted predict VERB fcis-6346 61 18 and and CCONJ fcis-6346 61 19 the the DET fcis-6346 61 20 top top ADJ fcis-6346 61 21 - - PUNCT fcis-6346 61 22 n n NOUN fcis-6346 61 23 recommendation recommendation NOUN fcis-6346 61 24 list list NOUN fcis-6346 61 25 is be AUX fcis-6346 61 26 generated generate VERB fcis-6346 61 27 . . PUNCT fcis-6346 62 1 the the DET fcis-6346 62 2 experiment experiment NOUN fcis-6346 62 3 was be AUX fcis-6346 62 4 verified verify VERB fcis-6346 62 5 on on ADP fcis-6346 62 6 the the DET fcis-6346 62 7 douban douban ADJ fcis-6346 62 8 public public ADJ fcis-6346 62 9 dataset dataset NOUN fcis-6346 62 10 , , PUNCT fcis-6346 62 11 and and CCONJ fcis-6346 62 12 compared compare VERB fcis-6346 62 13 with with ADP fcis-6346 62 14 other other ADJ fcis-6346 62 15 algorithms algorithm NOUN fcis-6346 62 16 , , PUNCT fcis-6346 62 17 the the DET fcis-6346 62 18 experiment experiment NOUN fcis-6346 62 19 verified verify VERB fcis-6346 62 20 that that SCONJ fcis-6346 62 21 the the DET fcis-6346 62 22 recommendation recommendation NOUN fcis-6346 62 23 accuracy accuracy NOUN fcis-6346 62 24 and and CCONJ fcis-6346 62 25 operation operation NOUN fcis-6346 62 26 effect effect NOUN fcis-6346 62 27 of of ADP fcis-6346 62 28 the the DET fcis-6346 62 29 algorithm algorithm NOUN fcis-6346 62 30 were be AUX fcis-6346 62 31 better well ADJ fcis-6346 62 32 . . PUNCT fcis-6346 63 1 ( ( PUNCT fcis-6346 63 2 2 2 X fcis-6346 63 3 ) ) PUNCT fcis-6346 63 4 this this DET fcis-6346 63 5 paper paper NOUN fcis-6346 63 6 combines combine VERB fcis-6346 63 7 the the DET fcis-6346 63 8 community community NOUN fcis-6346 63 9 division division NOUN fcis-6346 63 10 algorithm algorithm NOUN fcis-6346 63 11 with with ADP fcis-6346 63 12 the the DET fcis-6346 63 13 user user NOUN fcis-6346 63 14 - - PUNCT fcis-6346 63 15 based base VERB fcis-6346 63 16 collaborative collaborative ADJ fcis-6346 63 17 filtering filtering NOUN fcis-6346 63 18 algorithm algorithm NOUN fcis-6346 63 19 , , PUNCT fcis-6346 63 20 and and CCONJ fcis-6346 63 21 uses use VERB fcis-6346 63 22 the the DET fcis-6346 63 23 louvain louvain NOUN fcis-6346 63 24 community community NOUN fcis-6346 63 25 division division NOUN fcis-6346 63 26 algorithm algorithm NOUN fcis-6346 63 27 , , PUNCT fcis-6346 63 28 on on ADP fcis-6346 63 29 this this DET fcis-6346 63 30 basis basis NOUN fcis-6346 63 31 , , PUNCT fcis-6346 63 32 although although SCONJ fcis-6346 63 33 the the DET fcis-6346 63 34 sparsity sparsity NOUN fcis-6346 63 35 problem problem NOUN fcis-6346 63 36 and and CCONJ fcis-6346 63 37 cold cold ADJ fcis-6346 63 38 start start NOUN fcis-6346 63 39 problem problem NOUN fcis-6346 63 40 are be AUX fcis-6346 63 41 effectively effectively ADV fcis-6346 63 42 solved solve VERB fcis-6346 63 43 , , PUNCT fcis-6346 63 44 but but CCONJ fcis-6346 63 45 this this DET fcis-6346 63 46 paper paper NOUN fcis-6346 63 47 should should AUX fcis-6346 63 48 consider consider VERB fcis-6346 63 49 a a DET fcis-6346 63 50 variety variety NOUN fcis-6346 63 51 of of ADP fcis-6346 63 52 community community NOUN fcis-6346 63 53 division division NOUN fcis-6346 63 54 algorithms algorithm NOUN fcis-6346 63 55 , , PUNCT fcis-6346 63 56 so so SCONJ fcis-6346 63 57 as as SCONJ fcis-6346 63 58 to to PART fcis-6346 63 59 make make VERB fcis-6346 63 60 multiple multiple ADJ fcis-6346 63 61 comparisons comparison NOUN fcis-6346 63 62 , , PUNCT fcis-6346 63 63 choose choose VERB fcis-6346 63 64 the the DET fcis-6346 63 65 best good ADJ fcis-6346 63 66 division division NOUN fcis-6346 63 67 method method NOUN fcis-6346 63 68 , , PUNCT fcis-6346 63 69 and and CCONJ fcis-6346 63 70 need need VERB fcis-6346 63 71 to to PART fcis-6346 63 72 consider consider VERB fcis-6346 63 73 whether whether SCONJ fcis-6346 63 74 the the DET fcis-6346 63 75 algorithm algorithm NOUN fcis-6346 63 76 is be AUX fcis-6346 63 77 suitable suitable ADJ fcis-6346 63 78 for for ADP fcis-6346 63 79 the the DET fcis-6346 63 80 recommendation recommendation NOUN fcis-6346 63 81 of of ADP fcis-6346 63 82 more more ADJ fcis-6346 63 83 platforms platform NOUN fcis-6346 63 84 , , PUNCT fcis-6346 63 85 and and CCONJ fcis-6346 63 86 the the DET fcis-6346 63 87 evaluation evaluation NOUN fcis-6346 63 88 index index NOUN fcis-6346 63 89 of of ADP fcis-6346 63 90 the the DET fcis-6346 63 91 prediction prediction NOUN fcis-6346 63 92 score score NOUN fcis-6346 63 93 in in ADP fcis-6346 63 94 this this DET fcis-6346 63 95 paper paper NOUN fcis-6346 63 96 is be AUX fcis-6346 63 97 better well ADJ fcis-6346 63 98 than than ADP fcis-6346 63 99 other other ADJ fcis-6346 63 100 recommendation recommendation NOUN fcis-6346 63 101 algorithms algorithm NOUN fcis-6346 63 102 . . PUNCT fcis-6346 64 1 however however ADV fcis-6346 64 2 , , PUNCT fcis-6346 64 3 it it PRON fcis-6346 64 4 can can AUX fcis-6346 64 5 be be AUX fcis-6346 64 6 considered consider VERB fcis-6346 64 7 that that SCONJ fcis-6346 64 8 the the DET fcis-6346 64 9 algorithm algorithm NOUN fcis-6346 64 10 compares compare VERB fcis-6346 64 11 with with ADP fcis-6346 64 12 other other ADJ fcis-6346 64 13 algorithms algorithm NOUN fcis-6346 64 14 in in ADP fcis-6346 64 15 multiple multiple ADJ fcis-6346 64 16 evaluation evaluation NOUN fcis-6346 64 17 indicators indicator NOUN fcis-6346 64 18 . . PUNCT fcis-6346 65 1 references reference NOUN fcis-6346 65 2 [ [ X fcis-6346 65 3 1 1 NUM fcis-6346 65 4 ] ] PUNCT fcis-6346 65 5 bedi bedi PROPN fcis-6346 65 6 p p PROPN fcis-6346 65 7 , , PUNCT fcis-6346 65 8 sharma sharma PROPN fcis-6346 65 9 c. c. PROPN fcis-6346 65 10 community community PROPN fcis-6346 65 11 detection detection NOUN fcis-6346 65 12 in in ADP fcis-6346 65 13 social social ADJ fcis-6346 65 14 networks network NOUN fcis-6346 66 1 [ [ X fcis-6346 66 2 j j X fcis-6346 66 3 ] ] X fcis-6346 66 4 . . PUNCT fcis-6346 67 1 wiley wiley PROPN fcis-6346 67 2 interdisciplinary interdisciplinary ADJ fcis-6346 67 3 reviews review NOUN fcis-6346 67 4 : : PUNCT fcis-6346 67 5 data datum NOUN fcis-6346 67 6 mining mining NOUN fcis-6346 67 7 and and CCONJ fcis-6346 67 8 knowledge knowledge NOUN fcis-6346 67 9 discovery discovery NOUN fcis-6346 67 10 , , PUNCT fcis-6346 67 11 2016 2016 NUM fcis-6346 67 12 , , PUNCT fcis-6346 67 13 6(3 6(3 NUM fcis-6346 67 14 ): ): PUNCT fcis-6346 67 15 115 115 NUM fcis-6346 67 16 - - SYM fcis-6346 67 17 35 35 NUM fcis-6346 67 18 . . PUNCT fcis-6346 68 1 [ [ X fcis-6346 68 2 2 2 NUM fcis-6346 68 3 ] ] X fcis-6346 68 4 zhang zhang PROPN fcis-6346 68 5 q q PROPN fcis-6346 68 6 , , PUNCT fcis-6346 68 7 weng weng PROPN fcis-6346 68 8 l. l. PROPN fcis-6346 68 9 a a DET fcis-6346 68 10 systematic systematic ADJ fcis-6346 68 11 review review NOUN fcis-6346 68 12 of of ADP fcis-6346 68 13 social social ADJ fcis-6346 68 14 recommendation recommendation NOUN fcis-6346 68 15 [ [ X fcis-6346 68 16 j].computer j].computer NOUN fcis-6346 68 17 engineering engineering NOUN fcis-6346 68 18 and and CCONJ fcis-6346 68 19 application application NOUN fcis-6346 68 20 , , PUNCT fcis-6346 68 21 2020 2020 NUM fcis-6346 68 22 , , PUNCT fcis-6346 68 23 56(01):1 56(01):1 NUM fcis-6346 68 24 - - SYM fcis-6346 68 25 10 10 NUM fcis-6346 68 26 . . PUNCT fcis-6346 69 1 [ [ X fcis-6346 69 2 3 3 X fcis-6346 69 3 ] ] X fcis-6346 69 4 zhou zhou PROPN fcis-6346 69 5 w w PROPN fcis-6346 69 6 , , PUNCT fcis-6346 69 7 li li PROPN fcis-6346 69 8 j j PROPN fcis-6346 69 9 , , PUNCT fcis-6346 69 10 zhang zhang PROPN fcis-6346 69 11 m m PROPN fcis-6346 69 12 , , PUNCT fcis-6346 69 13 et et PROPN fcis-6346 69 14 al al PROPN fcis-6346 69 15 . . PROPN fcis-6346 69 16 incorporating incorporate VERB fcis-6346 69 17 social social ADJ fcis-6346 69 18 network network NOUN fcis-6346 69 19 and and CCONJ fcis-6346 69 20 user user NOUN fcis-6346 69 21 's 's PART fcis-6346 69 22 preference preference NOUN fcis-6346 69 23 in in ADP fcis-6346 69 24 matrix matrix NOUN fcis-6346 69 25 factorization factorization NOUN fcis-6346 69 26 for for ADP fcis-6346 69 27 recommendation[j recommendation[j PROPN fcis-6346 69 28 ] ] PUNCT fcis-6346 69 29 . . PUNCT fcis-6346 70 1 arabian arabian ADJ fcis-6346 70 2 journal journal PROPN fcis-6346 70 3 for for ADP fcis-6346 70 4 science science NOUN fcis-6346 70 5 and and CCONJ fcis-6346 70 6 engineering engineering NOUN fcis-6346 70 7 , , PUNCT fcis-6346 70 8 2018 2018 NUM fcis-6346 70 9 , , PUNCT fcis-6346 70 10 43(12):8179 43(12):8179 NUM fcis-6346 70 11 - - SYM fcis-6346 70 12 8193 8193 NUM fcis-6346 70 13 . . PUNCT fcis-6346 71 1 [ [ X fcis-6346 71 2 4 4 NUM fcis-6346 71 3 ] ] X fcis-6346 71 4 fe fe X fcis-6346 71 5 walter walter PROPN fcis-6346 71 6 , , PUNCT fcis-6346 71 7 battiston battiston PROPN fcis-6346 71 8 s s PART fcis-6346 71 9 , , PUNCT fcis-6346 71 10 schweitzer schweitzer PROPN fcis-6346 71 11 f f PROPN fcis-6346 71 12 . . PUNCT fcis-6346 72 1 a a DET fcis-6346 72 2 model model NOUN fcis-6346 72 3 of of ADP fcis-6346 72 4 a a DET fcis-6346 72 5 trustbased trustbase VERB fcis-6346 72 6 recommendation recommendation NOUN fcis-6346 72 7 system system NOUN fcis-6346 72 8 on on ADP fcis-6346 72 9 a a DET fcis-6346 72 10 social social ADJ fcis-6346 72 11 network[j network[j NOUN fcis-6346 72 12 ] ] PUNCT fcis-6346 72 13 . . PUNCT fcis-6346 73 1 autonomous autonomous ADJ fcis-6346 73 2 agents agent NOUN fcis-6346 73 3 and and CCONJ fcis-6346 73 4 multi multi ADJ fcis-6346 73 5 - - ADJ fcis-6346 73 6 agent agent ADJ fcis-6346 73 7 systems system NOUN fcis-6346 73 8 , , PUNCT fcis-6346 73 9 2008 2008 NUM fcis-6346 73 10 , , PUNCT fcis-6346 73 11 16(1):57 16(1):57 NUM fcis-6346 73 12 - - SYM fcis-6346 73 13 74 74 NUM fcis-6346 73 14 . . PUNCT fcis-6346 74 1 [ [ X fcis-6346 74 2 5 5 NUM fcis-6346 74 3 ] ] X fcis-6346 74 4 zhang zhang PROPN fcis-6346 74 5 x x PROPN fcis-6346 74 6 , , PUNCT fcis-6346 74 7 chen chen PROPN fcis-6346 74 8 x x PROPN fcis-6346 74 9 , , PUNCT fcis-6346 74 10 et et PROPN fcis-6346 74 11 al al PROPN fcis-6346 74 12 . . PROPN fcis-6346 74 13 top top ADJ fcis-6346 74 14 - - PUNCT fcis-6346 74 15 n n NOUN fcis-6346 74 16 recommendation recommendation NOUN fcis-6346 74 17 algorithm algorithm NOUN fcis-6346 74 18 integrating integrate VERB fcis-6346 74 19 user user NOUN fcis-6346 74 20 trust trust PROPN fcis-6346 74 21 and and CCONJ fcis-6346 74 22 influence[j].journal influence[j].journal ADJ fcis-6346 74 23 of of ADP fcis-6346 74 24 zhejiang zhejiang PROPN fcis-6346 74 25 university(engineering university(engineere VERB fcis-6346 74 26 science),2020,54(02):311 science),2020,54(02):311 PROPN fcis-6346 74 27 - - PUNCT fcis-6346 74 28 319 319 NUM fcis-6346 74 29 . . PUNCT fcis-6346 74 30 ) ) PUNCT fcis-6346 75 1 [ [ X fcis-6346 75 2 6 6 NUM fcis-6346 75 3 ] ] PUNCT fcis-6346 75 4 khelloufi khelloufi NOUN fcis-6346 75 5 a a DET fcis-6346 75 6 , , PUNCT fcis-6346 75 7 ning ning NOUN fcis-6346 75 8 h h PROPN fcis-6346 75 9 , , PUNCT fcis-6346 75 10 dhelim dhelim PROPN fcis-6346 75 11 s s PROPN fcis-6346 75 12 , , PUNCT fcis-6346 75 13 et et PROPN fcis-6346 75 14 al al PROPN fcis-6346 75 15 . . PUNCT fcis-6346 76 1 a a DET fcis-6346 76 2 social social ADJ fcis-6346 76 3 - - PUNCT fcis-6346 76 4 relationshipsbased relationshipsbase VERB fcis-6346 76 5 service service NOUN fcis-6346 76 6 recommendation recommendation NOUN fcis-6346 76 7 system system NOUN fcis-6346 76 8 for for ADP fcis-6346 76 9 siot siot NOUN fcis-6346 76 10 devices device NOUN fcis-6346 77 1 [ [ X fcis-6346 77 2 j j X fcis-6346 77 3 ] ] X fcis-6346 77 4 . . PUNCT fcis-6346 78 1 ieee ieee PROPN fcis-6346 78 2 internet internet NOUN fcis-6346 78 3 of of ADP fcis-6346 78 4 things thing NOUN fcis-6346 78 5 journal journal NOUN fcis-6346 78 6 , , PUNCT fcis-6346 78 7 8 8 NUM fcis-6346 78 8 . . PUNCT fcis-6346 79 1 [ [ X fcis-6346 79 2 7 7 X fcis-6346 79 3 ] ] X fcis-6346 79 4 li li PROPN fcis-6346 79 5 gai gai PROPN fcis-6346 79 6 , , PUNCT fcis-6346 79 7 li li PROPN fcis-6346 79 8 lei lei PROPN fcis-6346 79 9 , , PUNCT fcis-6346 79 10 zhang zhang PROPN fcis-6346 79 11 jiaqiang jiaqiang PROPN fcis-6346 79 12 . . PUNCT fcis-6346 80 1 social social ADJ fcis-6346 80 2 co co ADJ fcis-6346 80 3 - - ADJ fcis-6346 80 4 ordering ordering ADJ fcis-6346 80 5 recommendation recommendation NOUN fcis-6346 80 6 algorithm algorithm NOUN fcis-6346 80 7 based base VERB fcis-6346 80 8 on on ADP fcis-6346 80 9 explicit explicit ADJ fcis-6346 80 10 / / SYM fcis-6346 80 11 implicit implicit ADJ fcis-6346 80 12 feedback[j].computer feedback[j].computer ADJ fcis-6346 80 13 applications,2021,41(12):3515 applications,2021,41(12):3515 NOUN fcis-6346 80 14 - - PUNCT fcis-6346 80 15 3520 3520 NUM fcis-6346 80 16 . . PUNCT fcis-6346 80 17 ) ) PUNCT fcis-6346 81 1 [ [ X fcis-6346 81 2 8 8 NUM fcis-6346 81 3 ] ] X fcis-6346 81 4 newman newman PROPN fcis-6346 81 5 m m PROPN fcis-6346 81 6 , , PUNCT fcis-6346 81 7 girvan girvan NOUN fcis-6346 81 8 m.finding m.finde VERB fcis-6346 81 9 and and CCONJ fcis-6346 81 10 evaluating evaluate VERB fcis-6346 81 11 community community NOUN fcis-6346 81 12 structure structure NOUN fcis-6346 81 13 in in ADP fcis-6346 81 14 networks network NOUN fcis-6346 81 15 : : PUNCT fcis-6346 81 16 , , PUNCT fcis-6346 81 17 10.1103 10.1103 NUM fcis-6346 81 18 / / SYM fcis-6346 81 19 physreve.69.026113[p physreve.69.026113[p NOUN fcis-6346 81 20 ] ] PUNCT fcis-6346 81 21 . . PUNCT fcis-6346 81 22 2003 2003 NUM fcis-6346 81 23 . . PUNCT fcis-6346 82 1 [ [ X fcis-6346 82 2 9 9 NUM fcis-6346 82 3 ] ] PUNCT fcis-6346 82 4 blondel blondel NOUN fcis-6346 82 5 v v PROPN fcis-6346 82 6 d d PROPN fcis-6346 82 7 , , PUNCT fcis-6346 82 8 guillaume guillaume PROPN fcis-6346 82 9 j j PROPN fcis-6346 82 10 l l PROPN fcis-6346 82 11 , , PUNCT fcis-6346 82 12 lambiotte lambiotte ADJ fcis-6346 82 13 r r NOUN fcis-6346 82 14 , , PUNCT fcis-6346 82 15 et et PROPN fcis-6346 82 16 al al PROPN fcis-6346 82 17 . . PUNCT fcis-6346 83 1 fast fast ADJ fcis-6346 83 2 unfolding unfolding NOUN fcis-6346 83 3 of of ADP fcis-6346 83 4 communities community NOUN fcis-6346 83 5 in in ADP fcis-6346 83 6 large large ADJ fcis-6346 83 7 networks network NOUN fcis-6346 84 1 [ [ X fcis-6346 84 2 j j X fcis-6346 84 3 ] ] X fcis-6346 84 4 . . PUNCT fcis-6346 85 1 2008 2008 NUM fcis-6346 85 2 . . PUNCT fcis-6346 86 1 [ [ X fcis-6346 86 2 10 10 NUM fcis-6346 86 3 ] ] X fcis-6346 86 4 nilashi nilashi PROPN fcis-6346 86 5 m m PROPN fcis-6346 86 6 , , PUNCT fcis-6346 86 7 bagherifard bagherifard PROPN fcis-6346 86 8 k k PROPN fcis-6346 86 9 , , PUNCT fcis-6346 86 10 ibrahim ibrahim PROPN fcis-6346 86 11 o o PROPN fcis-6346 86 12 , , PUNCT fcis-6346 86 13 et et PROPN fcis-6346 86 14 al al PROPN fcis-6346 86 15 . . PROPN fcis-6346 86 16 collaborative collaborative ADJ fcis-6346 86 17 filtering filtering PROPN fcis-6346 86 18 recommender recommender PROPN fcis-6346 86 19 systems[j systems[j PROPN fcis-6346 86 20 ] ] PUNCT fcis-6346 86 21 . . PUNCT fcis-6346 87 1 research research NOUN fcis-6346 87 2 journal journal PROPN fcis-6346 87 3 of of ADP fcis-6346 87 4 applied apply VERB fcis-6346 87 5 sciences sciences PROPN fcis-6346 87 6 engineering engineering PROPN fcis-6346 87 7 & & CCONJ fcis-6346 87 8 technology technology PROPN fcis-6346 87 9 , , PUNCT fcis-6346 87 10 2013 2013 NUM fcis-6346 87 11 , , PUNCT fcis-6346 87 12 5(16 5(16 NUM fcis-6346 87 13 ): ): PUNCT fcis-6346 87 14 4168 4168 NUM fcis-6346 87 15 - - SYM fcis-6346 87 16 4182 4182 NUM fcis-6346 87 17 . . PUNCT fcis-6346 88 1 123 123 NUM fcis-6346 88 2 [ [ X fcis-6346 88 3 11 11 NUM fcis-6346 88 4 ] ] X fcis-6346 88 5 kanungo kanungo PROPN fcis-6346 88 6 t t PROPN fcis-6346 88 7 , , PUNCT fcis-6346 88 8 mount mount PROPN fcis-6346 88 9 d d PROPN fcis-6346 88 10 m m PROPN fcis-6346 88 11 , , PUNCT fcis-6346 88 12 netanyahu netanyahu PROPN fcis-6346 88 13 n n PROPN fcis-6346 88 14 s s PROPN fcis-6346 88 15 , , PUNCT fcis-6346 88 16 et et PROPN fcis-6346 88 17 al al PROPN fcis-6346 88 18 . . PUNCT fcis-6346 89 1 an an DET fcis-6346 89 2 efficient efficient ADJ fcis-6346 89 3 k k ADJ fcis-6346 89 4 - - PUNCT fcis-6346 89 5 means mean VERB fcis-6346 89 6 clustering clustering ADJ fcis-6346 89 7 algorithm algorithm NOUN fcis-6346 89 8 : : PUNCT fcis-6346 89 9 analysis analysis NOUN fcis-6346 89 10 and and CCONJ fcis-6346 89 11 implementation[j implementation[j NOUN fcis-6346 89 12 ] ] PUNCT fcis-6346 89 13 . . PUNCT fcis-6346 90 1 ieee ieee NOUN fcis-6346 90 2 transactions transaction NOUN fcis-6346 90 3 on on ADP fcis-6346 90 4 pattern pattern NOUN fcis-6346 90 5 analysis analysis NOUN fcis-6346 90 6 & & CCONJ fcis-6346 90 7 machine machine NOUN fcis-6346 90 8 intelligence intelligence NOUN fcis-6346 90 9 , , PUNCT fcis-6346 90 10 2002 2002 NUM fcis-6346 90 11 , , PUNCT fcis-6346 90 12 24(7):881 24(7):881 NUM fcis-6346 90 13 - - PUNCT fcis-6346 90 14 892 892 NUM fcis-6346 90 15 . . PUNCT fcis-6346 91 1 [ [ X fcis-6346 91 2 12 12 NUM fcis-6346 91 3 ] ] X fcis-6346 91 4 esfahani esfahani PROPN fcis-6346 91 5 m m PROPN fcis-6346 91 6 h h NOUN fcis-6346 91 7 , , PUNCT fcis-6346 91 8 alhan alhan PROPN fcis-6346 91 9 f f PROPN fcis-6346 91 10 k. k. PROPN fcis-6346 91 11 new new PROPN fcis-6346 91 12 hybrid hybrid ADJ fcis-6346 91 13 recommendation recommendation NOUN fcis-6346 91 14 system system NOUN fcis-6346 91 15 based base VERB fcis-6346 91 16 on on ADP fcis-6346 91 17 c c NOUN fcis-6346 91 18 - - PUNCT fcis-6346 91 19 means mean VERB fcis-6346 91 20 clustering clustering NOUN fcis-6346 91 21 method method NOUN fcis-6346 91 22 ; ; PUNCT fcis-6346 91 23 proceedings proceeding NOUN fcis-6346 91 24 of of ADP fcis-6346 91 25 the the DET fcis-6346 91 26 information information NOUN fcis-6346 91 27 & & CCONJ fcis-6346 91 28 knowledge knowledge PROPN fcis-6346 91 29 technology technology PROPN fcis-6346 91 30 , , PUNCT fcis-6346 91 31 f f X fcis-6346 91 32 , , PUNCT fcis-6346 91 33 2013 2013 NUM fcis-6346 92 1 [ [ X fcis-6346 92 2 c c X fcis-6346 92 3 ] ] PUNCT fcis-6346 92 4 . . PUNCT fcis-6346 93 1 [ [ X fcis-6346 93 2 13 13 NUM fcis-6346 93 3 ] ] X fcis-6346 93 4 kumar kumar PROPN fcis-6346 93 5 r r PROPN fcis-6346 93 6 , , PUNCT fcis-6346 93 7 verma verma PROPN fcis-6346 93 8 b b PROPN fcis-6346 94 1 k k PROPN fcis-6346 94 2 , , PUNCT fcis-6346 94 3 rastogi rastogi PROPN fcis-6346 94 4 s s PART fcis-6346 94 5 s. s. PROPN fcis-6346 94 6 social social PROPN fcis-6346 94 7 popularity popularity NOUN fcis-6346 94 8 based base VERB fcis-6346 94 9 svd++ svd++ NOUN fcis-6346 94 10 recommender recommender NOUN fcis-6346 94 11 system[j system[j NOUN fcis-6346 94 12 ] ] PUNCT fcis-6346 94 13 . . PUNCT fcis-6346 95 1 international international ADJ fcis-6346 95 2 journal journal PROPN fcis-6346 95 3 of of ADP fcis-6346 95 4 computer computer NOUN fcis-6346 95 5 applications application NOUN fcis-6346 95 6 , , PUNCT fcis-6346 95 7 2014 2014 NUM fcis-6346 95 8 , , PUNCT fcis-6346 95 9 87(14):33 87(14):33 NOUN fcis-6346 95 10 - - SYM fcis-6346 95 11 37 37 NUM fcis-6346 95 12 . . PUNCT