{"id":"https://openalex.org/W2294334540","doi":"https://doi.org/10.1145/2567948.2577363","title":"Data imputation using a trust network for recommendation","display_name":"Data imputation using a trust network for recommendation","publication_year":2014,"publication_date":"2014-04-07","ids":{"openalex":"https://openalex.org/W2294334540","doi":"https://doi.org/10.1145/2567948.2577363","mag":"2294334540"},"language":"en","primary_location":{"id":"doi:10.1145/2567948.2577363","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2567948.2577363","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 23rd International Conference on World Wide Web","raw_type":"proceedings-article"},"type":"conference-paper","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/A5014643514","display_name":"Wonseok Hwang","orcid":null},"institutions":[{"id":"https://openalex.org/I4575257","display_name":"Hanyang University","ror":"https://ror.org/046865y68","country_code":"KR","type":"education","lineage":["https://openalex.org/I4575257"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Won-Seok Hwang","raw_affiliation_strings":["Hanyang university, Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hanyang university, Seoul, South Korea","institution_ids":["https://openalex.org/I4575257"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101947418","display_name":"Shaoyu Li","orcid":"https://orcid.org/0000-0001-8280-6224"},"institutions":[{"id":"https://openalex.org/I4575257","display_name":"Hanyang University","ror":"https://ror.org/046865y68","country_code":"KR","type":"education","lineage":["https://openalex.org/I4575257"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Shaoyu Li","raw_affiliation_strings":["Hanyang university, Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hanyang university, Seoul, South Korea","institution_ids":["https://openalex.org/I4575257"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100656150","display_name":"Sang\u2010Wook Kim","orcid":"https://orcid.org/0000-0002-6345-9084"},"institutions":[{"id":"https://openalex.org/I4575257","display_name":"Hanyang University","ror":"https://ror.org/046865y68","country_code":"KR","type":"education","lineage":["https://openalex.org/I4575257"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Sang-Wook Kim","raw_affiliation_strings":["Hanyang university, Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hanyang university, Seoul, South Korea","institution_ids":["https://openalex.org/I4575257"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5064844412","display_name":"Kichun Lee","orcid":"https://orcid.org/0000-0002-5184-7151"},"institutions":[{"id":"https://openalex.org/I4575257","display_name":"Hanyang University","ror":"https://ror.org/046865y68","country_code":"KR","type":"education","lineage":["https://openalex.org/I4575257"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Kichun Lee","raw_affiliation_strings":["Hanyang university, Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hanyang university, Seoul, South Korea","institution_ids":["https://openalex.org/I4575257"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4575257"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"299","last_page":"300"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9998999834060669,"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":0.9998999834060669,"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/T12101","display_name":"Advanced Bandit Algorithms Research","score":0.9955000281333923,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11165","display_name":"Image and Video Quality Assessment","score":0.9907000064849854,"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/imputation","display_name":"Imputation (statistics)","score":0.8288419842720032},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7740324139595032},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.577297568321228},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.48674893379211426},{"id":"https://openalex.org/keywords/cold-start","display_name":"Cold start (automotive)","score":0.43222978711128235},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.374106228351593},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.3293599486351013},{"id":"https://openalex.org/keywords/missing-data","display_name":"Missing data","score":0.2738780975341797},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.06719750165939331}],"concepts":[{"id":"https://openalex.org/C58041806","wikidata":"https://www.wikidata.org/wiki/Q1660484","display_name":"Imputation (statistics)","level":3,"score":0.8288419842720032},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7740324139595032},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.577297568321228},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.48674893379211426},{"id":"https://openalex.org/C2778956030","wikidata":"https://www.wikidata.org/wiki/Q5142477","display_name":"Cold start (automotive)","level":2,"score":0.43222978711128235},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.374106228351593},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.3293599486351013},{"id":"https://openalex.org/C9357733","wikidata":"https://www.wikidata.org/wiki/Q6878417","display_name":"Missing data","level":2,"score":0.2738780975341797},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.06719750165939331},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2567948.2577363","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2567948.2577363","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 23rd International Conference on World Wide Web","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G7067895850","display_name":null,"funder_award_id":"NIPA-2013- H0503-13-1029","funder_id":"https://openalex.org/F4320322065","funder_display_name":"National IT Industry Promotion Agency"},{"id":"https://openalex.org/G8989510837","display_name":null,"funder_award_id":"NIPA-2013-H0301-13-4009","funder_id":"https://openalex.org/F4320322065","funder_display_name":"National IT Industry Promotion Agency"}],"funders":[{"id":"https://openalex.org/F4320322065","display_name":"National IT Industry Promotion Agency","ror":"https://ror.org/026v53e29"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W2054141820","https://openalex.org/W2096762662","https://openalex.org/W2133266261","https://openalex.org/W2135598826","https://openalex.org/W2137245235","https://openalex.org/W2171960770"],"related_works":["https://openalex.org/W2497939785","https://openalex.org/W2219931199","https://openalex.org/W4241927574","https://openalex.org/W2735929803","https://openalex.org/W2971083348","https://openalex.org/W3214288750","https://openalex.org/W584290403","https://openalex.org/W2786642545","https://openalex.org/W2084560547","https://openalex.org/W4315783862"],"abstract_inverted_index":{"Recommendation":[0],"methods":[1],"suffer":[2],"from":[3],"the":[4,49,57],"data":[5],"sparsity":[6],"and":[7,60],"cold-start":[8,75],"user":[9],"problems,":[10,19],"often":[11],"resulting":[12],"in":[13],"low":[14],"accuracy.":[15],"To":[16],"address":[17],"these":[18],"we":[20,42],"propose":[21],"a":[22,29,44],"novel":[23],"imputation":[24],"method,":[25,41],"which":[26],"effectively":[27],"densifies":[28],"rating":[30],"matrix":[31],"by":[32],"filling":[33],"unevaluated":[34,50],"ratings":[35,51],"with":[36],"probable":[37],"values.":[38],"In":[39],"our":[40,63],"use":[43],"trust":[45],"network":[46],"to":[47],"estimate":[48],"accurately.":[52],"We":[53],"conduct":[54],"experiments":[55],"on":[56],"Epinions":[58],"dataset":[59],"demonstrate":[61],"that":[62],"method":[64],"helps":[65],"provide":[66],"better":[67],"recommendation":[68],"accuracy":[69],"than":[70],"previous":[71],"methods,":[72],"especially":[73],"for":[74],"users.":[76]},"counts_by_year":[{"year":2021,"cited_by_count":1},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":5},{"year":2015,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
