{"id":"https://openalex.org/W2775881747","doi":"https://doi.org/10.1155/2017/9127612","title":"Reliable Collaborative Filtering on Spatio-Temporal Privacy Data","display_name":"Reliable Collaborative Filtering on Spatio-Temporal Privacy Data","publication_year":2017,"publication_date":"2017-01-01","ids":{"openalex":"https://openalex.org/W2775881747","doi":"https://doi.org/10.1155/2017/9127612","mag":"2775881747"},"language":"en","primary_location":{"id":"doi:10.1155/2017/9127612","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2017/9127612","pdf_url":"http://downloads.hindawi.com/journals/scn/2017/9127612.pdf","source":{"id":"https://openalex.org/S120683614","display_name":"Security and Communication Networks","issn_l":"1939-0114","issn":["1939-0114","1939-0122"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Security and Communication Networks","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"http://downloads.hindawi.com/journals/scn/2017/9127612.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100412018","display_name":"Zhen Liu","orcid":"https://orcid.org/0000-0001-9452-606X"},"institutions":[{"id":"https://openalex.org/I21193070","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84","country_code":"CN","type":"education","lineage":["https://openalex.org/I21193070"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhen Liu","raw_affiliation_strings":["Engineering Research Center of Network Management Technology for High Speed Railway of MOE, Beijing 100044, China","School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Engineering Research Center of Network Management Technology for High Speed Railway of MOE, Beijing 100044, China","institution_ids":[]},{"raw_affiliation_string":"School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China","institution_ids":["https://openalex.org/I21193070"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056970218","display_name":"Meng Huanyu","orcid":"https://orcid.org/0000-0003-4303-1651"},"institutions":[{"id":"https://openalex.org/I21193070","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84","country_code":"CN","type":"education","lineage":["https://openalex.org/I21193070"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Huanyu Meng","raw_affiliation_strings":["School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China"],"raw_orcid":"https://orcid.org/0000-0003-4303-1651","affiliations":[{"raw_affiliation_string":"School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China","institution_ids":["https://openalex.org/I21193070"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003953815","display_name":"Shuang Ren","orcid":"https://orcid.org/0000-0003-4065-4933"},"institutions":[{"id":"https://openalex.org/I21193070","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84","country_code":"CN","type":"education","lineage":["https://openalex.org/I21193070"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuang Ren","raw_affiliation_strings":["Engineering Research Center of Network Management Technology for High Speed Railway of MOE, Beijing 100044, China","School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Engineering Research Center of Network Management Technology for High Speed Railway of MOE, Beijing 100044, China","institution_ids":[]},{"raw_affiliation_string":"School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China","institution_ids":["https://openalex.org/I21193070"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100610450","display_name":"Feng Liu","orcid":"https://orcid.org/0000-0002-4554-8307"},"institutions":[{"id":"https://openalex.org/I21193070","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84","country_code":"CN","type":"education","lineage":["https://openalex.org/I21193070"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Feng Liu","raw_affiliation_strings":["Engineering Research Center of Network Management Technology for High Speed Railway of MOE, Beijing 100044, China","School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Engineering Research Center of Network Management Technology for High Speed Railway of MOE, Beijing 100044, China","institution_ids":[]},{"raw_affiliation_string":"School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China","institution_ids":["https://openalex.org/I21193070"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5056970218"],"corresponding_institution_ids":["https://openalex.org/I21193070"],"apc_list":{"value":2550,"currency":"USD","value_usd":2550},"apc_paid":{"value":2550,"currency":"USD","value_usd":2550},"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.14398214,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"2017","issue":null,"first_page":"1","last_page":"11"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9932000041007996,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8999550342559814},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.832127571105957},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.6625903248786926},{"id":"https://openalex.org/keywords/bipartite-graph","display_name":"Bipartite graph","score":0.6218643188476562},{"id":"https://openalex.org/keywords/cluster-analysis","display_name":"Cluster analysis","score":0.5449650287628174},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.5271218419075012},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.4807005524635315},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.4649008512496948},{"id":"https://openalex.org/keywords/similarity","display_name":"Similarity (geometry)","score":0.41544878482818604},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.3746253550052643},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.26611751317977905},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.26162266731262207},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.2302972674369812},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.14701882004737854}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8999550342559814},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.832127571105957},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.6625903248786926},{"id":"https://openalex.org/C197657726","wikidata":"https://www.wikidata.org/wiki/Q174733","display_name":"Bipartite graph","level":3,"score":0.6218643188476562},{"id":"https://openalex.org/C73555534","wikidata":"https://www.wikidata.org/wiki/Q622825","display_name":"Cluster analysis","level":2,"score":0.5449650287628174},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.5271218419075012},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.4807005524635315},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.4649008512496948},{"id":"https://openalex.org/C103278499","wikidata":"https://www.wikidata.org/wiki/Q254465","display_name":"Similarity (geometry)","level":3,"score":0.41544878482818604},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.3746253550052643},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.26611751317977905},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.26162266731262207},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.2302972674369812},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.14701882004737854},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1155/2017/9127612","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2017/9127612","pdf_url":"http://downloads.hindawi.com/journals/scn/2017/9127612.pdf","source":{"id":"https://openalex.org/S120683614","display_name":"Security and Communication Networks","issn_l":"1939-0114","issn":["1939-0114","1939-0122"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Security and Communication Networks","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:8f705628692d42e68e30a459a2348580","is_oa":true,"landing_page_url":"https://doaj.org/article/8f705628692d42e68e30a459a2348580","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Security and Communication Networks, Vol 2017 (2017)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1155/2017/9127612","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2017/9127612","pdf_url":"http://downloads.hindawi.com/journals/scn/2017/9127612.pdf","source":{"id":"https://openalex.org/S120683614","display_name":"Security and Communication Networks","issn_l":"1939-0114","issn":["1939-0114","1939-0122"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Security and Communication Networks","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1446928602","display_name":null,"funder_award_id":"2017JBM024","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G6741383324","display_name":null,"funder_award_id":"2016YFB1200100","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"}],"funders":[{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2775881747.pdf","grobid_xml":"https://content.openalex.org/works/W2775881747.grobid-xml"},"referenced_works_count":8,"referenced_works":["https://openalex.org/W1972436494","https://openalex.org/W2004585457","https://openalex.org/W2053167769","https://openalex.org/W2126194848","https://openalex.org/W2151295706","https://openalex.org/W2287622535","https://openalex.org/W2521595004","https://openalex.org/W2755570041"],"related_works":["https://openalex.org/W2772628444","https://openalex.org/W2735929803","https://openalex.org/W4220714703","https://openalex.org/W1484355083","https://openalex.org/W3008845055","https://openalex.org/W2098758514","https://openalex.org/W4376854386","https://openalex.org/W2202724490","https://openalex.org/W3014393615","https://openalex.org/W2508671622"],"abstract_inverted_index":{"Lots":[0],"of":[1,30,52,125,148,175],"multilayer":[2,47],"information,":[3],"such":[4],"as":[5],"the":[6,14,21,31,42,46,57,93,98,105,114,123,134,144,156,167,173,181,188,191],"spatio-temporal":[7,81,163],"privacy":[8,82,164],"check-in":[9,95],"data,":[10],"is":[11,34,86,100,117,131],"accumulated":[12],"in":[13,88],"location-based":[15],"social":[16],"network":[17],"(LBSN).":[18],"When":[19],"using":[20,133],"collaborative":[22,53,72],"filtering":[23,54],"algorithm":[24,44,76,116,194],"for":[25],"LBSN":[26],"location":[27,74,145],"recommendation,":[28],"one":[29],"core":[32],"issues":[33],"how":[35],"to":[36,103,110,119],"improve":[37],"recommendation":[38,75],"performance":[39],"by":[40,162],"combining":[41],"traditional":[43],"with":[45,187],"information.":[48],"The":[49],"existing":[50,189],"approaches":[51],"use":[55],"only":[56],"sparse":[58],"user-item":[59],"rating":[60,174],"matrix.":[61],"It":[62],"entails":[63],"high":[64],"computational":[65],"complexity":[66],"and":[67,121,146,153],"inaccurate":[68],"results.":[69],"A":[70],"novel":[71],"filtering-based":[73],"called":[77],"LGP-CF,":[78],"which":[79],"takes":[80],"information":[83],"into":[84],"account,":[85],"proposed":[87,192],"this":[89],"paper.":[90],"By":[91],"mining":[92],"users":[94,149,160],"behavior":[96],"pattern,":[97],"dataset":[99],"segmented":[101],"semantically":[102],"reduce":[104],"data":[106,165],"size":[107],"that":[108,185],"needs":[109],"be":[111],"computed.":[112],"Then":[113,139],"clustering":[115],"used":[118],"obtain":[120],"narrow":[122],"set":[124],"similar":[126,136],"users.":[127],"User-location":[128],"bipartite":[129],"graph":[130],"modeled":[132],"filtered":[135],"user":[137],"set.":[138],"LGP-CF":[140,193],"can":[141,170,195],"quickly":[142],"locate":[143],"trajectory":[147],"through":[150],"message":[151],"propagation":[152],"aggregation":[154],"over":[155],"graph.":[157],"Through":[158],"calculating":[159],"similarity":[161],"on":[166,180],"graph,":[168],"we":[169],"finally":[171],"calculate":[172],"recommendable":[176],"locations.":[177],"Experiments":[178],"results":[179],"physical":[182],"clusters":[183],"indicate":[184],"compared":[186],"algorithms,":[190],"make":[196],"recommendations":[197],"more":[198],"accurately.":[199]},"counts_by_year":[],"updated_date":"2026-08-01T09:00:35.917206","created_date":"2025-10-10T00:00:00"}