{"id":"https://openalex.org/W3048841343","doi":"https://doi.org/10.1109/tcomm.2020.3015478","title":"Online Spatiotemporal Popularity Learning via Variational Bayes for Cooperative Caching","display_name":"Online Spatiotemporal Popularity Learning via Variational Bayes for Cooperative Caching","publication_year":2020,"publication_date":"2020-08-11","ids":{"openalex":"https://openalex.org/W3048841343","doi":"https://doi.org/10.1109/tcomm.2020.3015478","mag":"3048841343"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2020.3015478","is_oa":true,"landing_page_url":"https://doi.org/10.1109/tcomm.2020.3015478","pdf_url":"https://ieeexplore.ieee.org/ielx7/26/9262089/09165221.pdf","source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://ieeexplore.ieee.org/ielx7/26/9262089/09165221.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5047908487","display_name":"Sajad Mehrizi","orcid":"https://orcid.org/0000-0003-2556-3865"},"institutions":[{"id":"https://openalex.org/I186903577","display_name":"University of Luxembourg","ror":"https://ror.org/036x5ad56","country_code":"LU","type":"education","lineage":["https://openalex.org/I186903577"]}],"countries":["LU"],"is_corresponding":true,"raw_author_name":"Sajad Mehrizi","raw_affiliation_strings":["Interdisciplinary Centre for Security, Reliability, and Trust (SnT), University of Luxembourg, Luxembourg, Luxembourg"],"affiliations":[{"raw_affiliation_string":"Interdisciplinary Centre for Security, Reliability, and Trust (SnT), University of Luxembourg, Luxembourg, Luxembourg","institution_ids":["https://openalex.org/I186903577"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101692633","display_name":"Saikat Chatterjee","orcid":"https://orcid.org/0000-0003-2638-6047"},"institutions":[{"id":"https://openalex.org/I86987016","display_name":"KTH Royal Institute of Technology","ror":"https://ror.org/026vcq606","country_code":"SE","type":"education","lineage":["https://openalex.org/I86987016"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Saikat Chatterjee","raw_affiliation_strings":["Communication Theory Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden"],"affiliations":[{"raw_affiliation_string":"Communication Theory Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden","institution_ids":["https://openalex.org/I86987016"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016154330","display_name":"Symeon Chatzinotas","orcid":"https://orcid.org/0000-0001-5122-0001"},"institutions":[{"id":"https://openalex.org/I186903577","display_name":"University of Luxembourg","ror":"https://ror.org/036x5ad56","country_code":"LU","type":"education","lineage":["https://openalex.org/I186903577"]}],"countries":["LU"],"is_corresponding":false,"raw_author_name":"Symeon Chatzinotas","raw_affiliation_strings":["Interdisciplinary Centre for Security, Reliability, and Trust (SnT), University of Luxembourg, Luxembourg, Luxembourg"],"affiliations":[{"raw_affiliation_string":"Interdisciplinary Centre for Security, Reliability, and Trust (SnT), University of Luxembourg, Luxembourg, Luxembourg","institution_ids":["https://openalex.org/I186903577"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5080037825","display_name":"Bj\u00f6rn Ottersten","orcid":"https://orcid.org/0000-0003-2298-6774"},"institutions":[{"id":"https://openalex.org/I186903577","display_name":"University of Luxembourg","ror":"https://ror.org/036x5ad56","country_code":"LU","type":"education","lineage":["https://openalex.org/I186903577"]}],"countries":["LU"],"is_corresponding":false,"raw_author_name":"Bjorn Ottersten","raw_affiliation_strings":["Interdisciplinary Centre for Security, Reliability, and Trust (SnT), University of Luxembourg, Luxembourg, Luxembourg"],"affiliations":[{"raw_affiliation_string":"Interdisciplinary Centre for Security, Reliability, and Trust (SnT), University of Luxembourg, Luxembourg, Luxembourg","institution_ids":["https://openalex.org/I186903577"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5047908487"],"corresponding_institution_ids":["https://openalex.org/I186903577"],"apc_list":null,"apc_paid":null,"fwci":3.8665,"has_fulltext":true,"cited_by_count":34,"citation_normalized_percentile":{"value":0.93835077,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"68","issue":"11","first_page":"7068","last_page":"7082"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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":0.9876000285148621,"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"}},{"id":"https://openalex.org/T10742","display_name":"Peer-to-Peer Network Technologies","score":0.9726999998092651,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/popularity","display_name":"Popularity","score":0.8186465501785278},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8034759163856506},{"id":"https://openalex.org/keywords/probabilistic-logic","display_name":"Probabilistic logic","score":0.4968309700489044},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.3849281966686249},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.369300901889801},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.35214805603027344}],"concepts":[{"id":"https://openalex.org/C2780586970","wikidata":"https://www.wikidata.org/wiki/Q1357284","display_name":"Popularity","level":2,"score":0.8186465501785278},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8034759163856506},{"id":"https://openalex.org/C49937458","wikidata":"https://www.wikidata.org/wiki/Q2599292","display_name":"Probabilistic logic","level":2,"score":0.4968309700489044},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3849281966686249},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.369300901889801},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.35214805603027344},{"id":"https://openalex.org/C77805123","wikidata":"https://www.wikidata.org/wiki/Q161272","display_name":"Social psychology","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tcomm.2020.3015478","is_oa":true,"landing_page_url":"https://doi.org/10.1109/tcomm.2020.3015478","pdf_url":"https://ieeexplore.ieee.org/ielx7/26/9262089/09165221.pdf","source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"},{"id":"pmh:oai:orbilu.uni.lu:10993/44413","is_oa":true,"landing_page_url":"http://orbilu.uni.lu/handle/10993/44413","pdf_url":null,"source":{"id":"https://openalex.org/S4306401815","display_name":"Open Repository and Bibliography (University of Luxembourg)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I186903577","host_organization_name":"University of Luxembourg","host_organization_lineage":["https://openalex.org/I186903577"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-sa","license_id":"https://openalex.org/licenses/cc-by-nc-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Transactions on Communications (2020)","raw_type":"peer reviewed"}],"best_oa_location":{"id":"doi:10.1109/tcomm.2020.3015478","is_oa":true,"landing_page_url":"https://doi.org/10.1109/tcomm.2020.3015478","pdf_url":"https://ieeexplore.ieee.org/ielx7/26/9262089/09165221.pdf","source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/17","score":0.44999998807907104,"display_name":"Partnerships for the goals"}],"awards":[{"id":"https://openalex.org/G1187305618","display_name":null,"funder_award_id":"LISTEN","funder_id":"https://openalex.org/F4320321038","funder_display_name":"Fonds National de la Recherche Luxembourg"},{"id":"https://openalex.org/G5758224957","display_name":null,"funder_award_id":"11826975","funder_id":"https://openalex.org/F4320321038","funder_display_name":"Fonds National de la Recherche Luxembourg"}],"funders":[{"id":"https://openalex.org/F4320321038","display_name":"Fonds National de la Recherche Luxembourg","ror":"https://ror.org/039z13y21"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3048841343.pdf","grobid_xml":"https://content.openalex.org/works/W3048841343.grobid-xml"},"referenced_works_count":46,"referenced_works":["https://openalex.org/W1497193185","https://openalex.org/W1500188831","https://openalex.org/W1577245107","https://openalex.org/W1663973292","https://openalex.org/W1767905185","https://openalex.org/W1972738071","https://openalex.org/W1975651401","https://openalex.org/W1978690967","https://openalex.org/W2024165284","https://openalex.org/W2051773775","https://openalex.org/W2112053513","https://openalex.org/W2145498142","https://openalex.org/W2155349113","https://openalex.org/W2219888463","https://openalex.org/W2263102236","https://openalex.org/W2315975036","https://openalex.org/W2340240312","https://openalex.org/W2403286959","https://openalex.org/W2425152312","https://openalex.org/W2498604117","https://openalex.org/W2565701092","https://openalex.org/W2588178045","https://openalex.org/W2592755103","https://openalex.org/W2610668252","https://openalex.org/W2789683759","https://openalex.org/W2790635750","https://openalex.org/W2798766386","https://openalex.org/W2805049950","https://openalex.org/W2807161440","https://openalex.org/W2897434075","https://openalex.org/W2900490252","https://openalex.org/W2912078769","https://openalex.org/W2918639054","https://openalex.org/W2952875946","https://openalex.org/W2957397436","https://openalex.org/W2962817665","https://openalex.org/W2963092844","https://openalex.org/W2963264932","https://openalex.org/W2963531342","https://openalex.org/W2977477153","https://openalex.org/W3122800475","https://openalex.org/W4231458249","https://openalex.org/W4242209908","https://openalex.org/W4244248625","https://openalex.org/W6681709612","https://openalex.org/W6713738107"],"related_works":["https://openalex.org/W2961085424","https://openalex.org/W4306674287","https://openalex.org/W4387369504","https://openalex.org/W3046775127","https://openalex.org/W4394896187","https://openalex.org/W3170094116","https://openalex.org/W4386462264","https://openalex.org/W3107602296","https://openalex.org/W4364306694","https://openalex.org/W4312192474"],"abstract_inverted_index":{"Herein,":[0],"we":[1,43,85,162],"focus":[2],"on":[3,158],"an":[4,69,102,140],"end-to-end":[5],"design":[6,18],"of":[7,72,107],"a":[8,14,46,87,159],"proactive":[9,65],"cooperative":[10,47],"caching":[11,49,66,178],"strategy":[12],"for":[13,58,91,127],"multi-cell":[15],"network.":[16],"The":[17,132],"is":[19,115],"challenging":[20],"as":[21],"it":[22],"involves":[23],"two":[24],"interrelated":[25],"problems:":[26],"the":[27,54,111,129],"ability":[28],"to":[29,35,52,61,175],"predict":[30],"future":[31],"content":[32,48,74,92,108,150,177],"popularity":[33,77,93,109],"and":[34,80,83,105,117],"meet":[36],"network":[37,56],"operation":[38],"characteristics.":[39],"To":[40,100],"this":[41],"end,":[42],"first":[44],"formulate":[45],"in":[50],"order":[51],"optimize":[53],"aggregated":[55],"cost":[57],"delivering":[59],"contents":[60],"users.":[62],"An":[63],"efficient":[64],"policy":[67],"requires":[68],"accurate":[70,103],"prediction":[71,94,106],"time-varying":[73],"popularity.":[75],"Content":[76],"has":[78],"temporal":[79],"spatial":[81],"dependencies":[82],"therefore,":[84],"develop":[86,139],"probabilistic":[88],"dynamical":[89,113,169],"model":[90,114,130,170],"by":[95],"exploiting":[96],"its":[97],"spatiotemporal":[98],"correlations.":[99],"achieve":[101],"tracking":[104],"evolution,":[110],"proposed":[112],"non-linear":[116],"incorporates":[118],"non-Gaussian":[119],"distributions.":[120],"We":[121,137],"use":[122],"Variational":[123],"Bayes":[124],"(VB)":[125],"approach":[126],"estimating":[128],"parameters.":[131],"VB":[133,142,167],"provides":[134,171],"mathematical":[135],"tractability.":[136],"then":[138],"online":[141,166],"method":[143],"that":[144,164],"works":[145],"with":[146],"streaming":[147],"data":[148],"where":[149],"request":[151],"arrives":[152],"sequentially.":[153],"Using":[154],"extensive":[155],"simulations":[156],"study":[157],"real-world":[160],"dataset,":[161],"show":[163],"our":[165],"based":[168],"improved":[172],"performance":[173],"compared":[174],"conventional":[176],"policies.":[179]},"counts_by_year":[{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":7},{"year":2022,"cited_by_count":9},{"year":2021,"cited_by_count":7},{"year":2020,"cited_by_count":1}],"updated_date":"2026-03-18T14:38:29.013473","created_date":"2025-10-10T00:00:00"}