{"id":"https://openalex.org/W2088203776","doi":"https://doi.org/10.2753/jec1086-4415140203","title":"Predicting Missing Ratings in Recommender Systems: Adapted Factorization Approach","display_name":"Predicting Missing Ratings in Recommender Systems: Adapted Factorization Approach","publication_year":2009,"publication_date":"2009-12-01","ids":{"openalex":"https://openalex.org/W2088203776","doi":"https://doi.org/10.2753/jec1086-4415140203","mag":"2088203776"},"language":"en","primary_location":{"id":"doi:10.2753/jec1086-4415140203","is_oa":false,"landing_page_url":"https://doi.org/10.2753/jec1086-4415140203","pdf_url":null,"source":{"id":"https://openalex.org/S18436875","display_name":"International Journal of Electronic Commerce","issn_l":"1086-4415","issn":["1086-4415","1557-9301"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547"],"host_organization_lineage_names":["Taylor & Francis"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Electronic Commerce","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5046999910","display_name":"Carme Juli\u00e0","orcid":"https://orcid.org/0000-0003-3440-6175"},"institutions":[{"id":"https://openalex.org/I123044942","display_name":"Universitat Aut\u00f2noma de Barcelona","ror":"https://ror.org/052g8jq94","country_code":"ES","type":"education","lineage":["https://openalex.org/I123044942"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Carme Juli\u00e0","raw_affiliation_strings":["a Computer Vision Center, Universitat Aut\u00f3noma de Barcelona"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"a Computer Vision Center, Universitat Aut\u00f3noma de Barcelona","institution_ids":["https://openalex.org/I123044942"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002373986","display_name":"\u00c1ngel D. Sappa","orcid":"https://orcid.org/0000-0003-2468-0031"},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Angel D. Sappa","raw_affiliation_strings":["b Polytechnic University of Catalonia, Barcelona, Spain","Polytechnic University of Catalonia, Barcelona, SPAIN"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"b Polytechnic University of Catalonia, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848"]},{"raw_affiliation_string":"Polytechnic University of Catalonia, Barcelona, SPAIN","institution_ids":["https://openalex.org/I9617848"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057220298","display_name":"Felipe Lumbreras","orcid":"https://orcid.org/0000-0003-2887-8053"},"institutions":[{"id":"https://openalex.org/I123044942","display_name":"Universitat Aut\u00f2noma de Barcelona","ror":"https://ror.org/052g8jq94","country_code":"ES","type":"education","lineage":["https://openalex.org/I123044942"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Felipe Lumbreras","raw_affiliation_strings":["c Universitat Aut\u00f3noma de Barcelona"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"c Universitat Aut\u00f3noma de Barcelona","institution_ids":["https://openalex.org/I123044942"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047417694","display_name":"Joan Serrat","orcid":"https://orcid.org/0000-0002-4554-199X"},"institutions":[{"id":"https://openalex.org/I123044942","display_name":"Universitat Aut\u00f2noma de Barcelona","ror":"https://ror.org/052g8jq94","country_code":"ES","type":"education","lineage":["https://openalex.org/I123044942"]},{"id":"https://openalex.org/I4210156583","display_name":"Laboratoire d'Informatique de Paris-Nord","ror":"https://ror.org/05g1zjw44","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I4210091279","https://openalex.org/I4210156583","https://openalex.org/I4210159245"]}],"countries":["ES","FR"],"is_corresponding":false,"raw_author_name":"Joan Serrat","raw_affiliation_strings":["d Computer Science Department, Universitat Aut\u00f3noma de Barcelona"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"d Computer Science Department, Universitat Aut\u00f3noma de Barcelona","institution_ids":["https://openalex.org/I123044942","https://openalex.org/I4210156583"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5087248790","display_name":"Antonio M. L\u00f3pez","orcid":"https://orcid.org/0000-0002-6979-5783"},"institutions":[{"id":"https://openalex.org/I123044942","display_name":"Universitat Aut\u00f2noma de Barcelona","ror":"https://ror.org/052g8jq94","country_code":"ES","type":"education","lineage":["https://openalex.org/I123044942"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Antonio L\u00f3pez","raw_affiliation_strings":["e Universitat Aut\u00f3noma de Barcelona"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"e Universitat Aut\u00f3noma de Barcelona","institution_ids":["https://openalex.org/I123044942"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":8.3193,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.97439595,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":97},"biblio":{"volume":"14","issue":"2","first_page":"89","last_page":"108"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9937000274658203,"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"}},"topics":[{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9937000274658203,"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/T10057","display_name":"Face and Expression Recognition","score":0.9933000206947327,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T11439","display_name":"Video Analysis and Summarization","score":0.9925000071525574,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/recommender-system","display_name":"Recommender system","score":0.9261119365692139},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8143996000289917},{"id":"https://openalex.org/keywords/singular-value-decomposition","display_name":"Singular value decomposition","score":0.8002448081970215},{"id":"https://openalex.org/keywords/matrix-decomposition","display_name":"Matrix decomposition","score":0.7314326763153076},{"id":"https://openalex.org/keywords/factorization","display_name":"Factorization","score":0.6210669875144958},{"id":"https://openalex.org/keywords/decomposition","display_name":"Decomposition","score":0.5101516842842102},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.4717878997325897},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.4350331425666809},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.42964857816696167},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.4139113426208496},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.4073677062988281},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.20575934648513794}],"concepts":[{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.9261119365692139},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8143996000289917},{"id":"https://openalex.org/C22789450","wikidata":"https://www.wikidata.org/wiki/Q420904","display_name":"Singular value decomposition","level":2,"score":0.8002448081970215},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.7314326763153076},{"id":"https://openalex.org/C187834632","wikidata":"https://www.wikidata.org/wiki/Q188804","display_name":"Factorization","level":2,"score":0.6210669875144958},{"id":"https://openalex.org/C124681953","wikidata":"https://www.wikidata.org/wiki/Q339062","display_name":"Decomposition","level":2,"score":0.5101516842842102},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.4717878997325897},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.4350331425666809},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.42964857816696167},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.4139113426208496},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.4073677062988281},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.20575934648513794},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C158693339","wikidata":"https://www.wikidata.org/wiki/Q190524","display_name":"Eigenvalues and eigenvectors","level":2,"score":0.0},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.2753/jec1086-4415140203","is_oa":false,"landing_page_url":"https://doi.org/10.2753/jec1086-4415140203","pdf_url":null,"source":{"id":"https://openalex.org/S18436875","display_name":"International Journal of Electronic Commerce","issn_l":"1086-4415","issn":["1086-4415","1557-9301"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547"],"host_organization_lineage_names":["Taylor & Francis"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Electronic Commerce","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.297.6453","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.297.6453","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.cvc.uab.es/~joans/journals/09 IJEC Predicting missing ratings in recommender systems.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/17","display_name":"Partnerships for the goals","score":0.4399999976158142},{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.4099999964237213}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W349217628","https://openalex.org/W1487320137","https://openalex.org/W1493931800","https://openalex.org/W1673941785","https://openalex.org/W1832221731","https://openalex.org/W1974014245","https://openalex.org/W2014319185","https://openalex.org/W2044807464","https://openalex.org/W2072773380","https://openalex.org/W2110121428","https://openalex.org/W2117354486","https://openalex.org/W2126762950","https://openalex.org/W2138835141","https://openalex.org/W2155106456","https://openalex.org/W2155912844","https://openalex.org/W2167680278","https://openalex.org/W2798909945","https://openalex.org/W3035812881","https://openalex.org/W3121531027","https://openalex.org/W6637259173"],"related_works":["https://openalex.org/W1484355083","https://openalex.org/W4220714703","https://openalex.org/W2170391450","https://openalex.org/W2735929803","https://openalex.org/W2098758514","https://openalex.org/W3008845055","https://openalex.org/W2041004656","https://openalex.org/W2202724490","https://openalex.org/W2103058005","https://openalex.org/W4376854386"],"abstract_inverted_index":{"The":[0,60,86],"paper":[1],"presents":[2],"a":[3,106,131],"factorization-based":[4,62],"approach":[5,63,125],"to":[6,20,26,46,54,69,118],"make":[7],"predictions":[8],"in":[9,17,39,57,74],"recommender":[10,43],"systems.":[11],"These":[12],"systems":[13],"are":[14,116],"widely":[15,132],"used":[16,133],"electronic":[18],"commerce":[19],"help":[21],"customers":[22],"find":[23],"products":[24,37,56],"according":[25],"their":[27],"preferences.":[28],"Taking":[29],"into":[30],"account":[31],"the":[32,40,42,48,50,58,66,71,75,121],"customer's":[33],"ratings":[34,49,129],"of":[35,89],"some":[36],"available":[38],"system,":[41],"system":[44],"tries":[45],"predict":[47],"customer":[51],"would":[52],"give":[53],"other":[55],"system.":[59],"proposed":[61,122],"uses":[64],"all":[65],"information":[67],"provided":[68,117],"compute":[70],"predicted":[72,128],"ratings,":[73],"same":[76],"way":[77],"as":[78],"approaches":[79,94],"based":[80],"on":[81],"Singular":[82],"Value":[83],"Decomposition":[84],"(SVD).":[85],"main":[87],"advantage":[88],"this":[90],"technique":[91],"versus":[92],"SVD-based":[93,134],"is":[95],"that":[96,120],"it":[97],"can":[98],"deal":[99],"with":[100,112],"missing":[101],"data.":[102],"It":[103],"also":[104],"has":[105],"smaller":[107],"computational":[108],"cost.":[109],"Experimental":[110],"results":[111],"public":[113],"data":[114],"sets":[115],"show":[119],"adapted":[123],"factorization":[124],"gives":[126],"better":[127],"than":[130],"approach.":[135]},"counts_by_year":[{"year":2012,"cited_by_count":3}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2025-10-10T00:00:00"}
