{"id":"https://openalex.org/W2936585618","doi":"https://doi.org/10.3390/sym11040561","title":"Boosting Memory-Based Collaborative Filtering Using Content-Metadata","display_name":"Boosting Memory-Based Collaborative Filtering Using Content-Metadata","publication_year":2019,"publication_date":"2019-04-18","ids":{"openalex":"https://openalex.org/W2936585618","doi":"https://doi.org/10.3390/sym11040561","mag":"2936585618"},"language":"en","primary_location":{"id":"doi:10.3390/sym11040561","is_oa":true,"landing_page_url":"https://doi.org/10.3390/sym11040561","pdf_url":"https://www.mdpi.com/2073-8994/11/4/561/pdf?version=1555588573","source":{"id":"https://openalex.org/S190787756","display_name":"Symmetry","issn_l":"2073-8994","issn":["2073-8994"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Symmetry","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2073-8994/11/4/561/pdf?version=1555588573","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5053297562","display_name":"Kyung Soo Kim","orcid":"https://orcid.org/0000-0002-1044-3089"},"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":"Kyung Soo Kim","raw_affiliation_strings":["Department of Electronics and Computer Engineering, Hanyang University, Seoul 04763, Korea"],"affiliations":[{"raw_affiliation_string":"Department of Electronics and Computer Engineering, Hanyang University, Seoul 04763, Korea","institution_ids":["https://openalex.org/I4575257"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5085348285","display_name":"Doo Soo Chang","orcid":"https://orcid.org/0000-0003-4208-5922"},"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":"Doo Soo Chang","raw_affiliation_strings":["Department of Computer Science and Engineering, Hanyang University, Seoul 04763, Korea"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science and Engineering, Hanyang University, Seoul 04763, Korea","institution_ids":["https://openalex.org/I4575257"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100677785","display_name":"Yong Suk Choi","orcid":"https://orcid.org/0000-0002-9042-0599"},"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":true,"raw_author_name":"Yong Suk Choi","raw_affiliation_strings":["Department of Computer Science and Engineering, Hanyang University, Seoul 04763, Korea"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science and Engineering, Hanyang University, Seoul 04763, Korea","institution_ids":["https://openalex.org/I4575257"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5100677785"],"corresponding_institution_ids":["https://openalex.org/I4575257"],"apc_list":{"value":2000,"currency":"CHF","value_usd":2165},"apc_paid":{"value":2000,"currency":"CHF","value_usd":2165},"fwci":1.7592,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.88249621,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"11","issue":"4","first_page":"561","last_page":"561"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9998000264167786,"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":0.9998000264167786,"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/T11478","display_name":"Caching and Content Delivery","score":0.9598000049591064,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9004999995231628,"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/metadata","display_name":"Metadata","score":0.9170370101928711},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8571460247039795},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.7481120824813843},{"id":"https://openalex.org/keywords/content","display_name":"Content (measure theory)","score":0.6269881725311279},{"id":"https://openalex.org/keywords/boosting","display_name":"Boosting (machine learning)","score":0.6194236278533936},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.5740758180618286},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.5701548457145691},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.3602648377418518},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.1555624008178711}],"concepts":[{"id":"https://openalex.org/C93518851","wikidata":"https://www.wikidata.org/wiki/Q180160","display_name":"Metadata","level":2,"score":0.9170370101928711},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8571460247039795},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.7481120824813843},{"id":"https://openalex.org/C2778152352","wikidata":"https://www.wikidata.org/wiki/Q5165061","display_name":"Content (measure theory)","level":2,"score":0.6269881725311279},{"id":"https://openalex.org/C46686674","wikidata":"https://www.wikidata.org/wiki/Q466303","display_name":"Boosting (machine learning)","level":2,"score":0.6194236278533936},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.5740758180618286},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.5701548457145691},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.3602648377418518},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.1555624008178711},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.3390/sym11040561","is_oa":true,"landing_page_url":"https://doi.org/10.3390/sym11040561","pdf_url":"https://www.mdpi.com/2073-8994/11/4/561/pdf?version=1555588573","source":{"id":"https://openalex.org/S190787756","display_name":"Symmetry","issn_l":"2073-8994","issn":["2073-8994"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Symmetry","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:5ba4fa3ab40d4ba4857902ab04517edc","is_oa":true,"landing_page_url":"https://doaj.org/article/5ba4fa3ab40d4ba4857902ab04517edc","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Symmetry, Vol 11, Iss 4, p 561 (2019)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2073-8994/11/4/561/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/sym11040561","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Symmetry","raw_type":"Text"},{"id":"pmh:oai:repository.hanyang.ac.kr:20.500.11754/110748","is_oa":true,"landing_page_url":"https://www.mdpi.com/2073-8994/11/4/561","pdf_url":null,"source":{"id":"https://openalex.org/S4306401328","display_name":"The Royal Society of Chemistry\u2019s Journals, Books and Databases (The Royal Society of Chemistry)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I2751430930","host_organization_name":"Royal Society of Chemistry","host_organization_lineage":["https://openalex.org/I2751430930"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Article"}],"best_oa_location":{"id":"doi:10.3390/sym11040561","is_oa":true,"landing_page_url":"https://doi.org/10.3390/sym11040561","pdf_url":"https://www.mdpi.com/2073-8994/11/4/561/pdf?version=1555588573","source":{"id":"https://openalex.org/S190787756","display_name":"Symmetry","issn_l":"2073-8994","issn":["2073-8994"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Symmetry","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G6084384361","display_name":null,"funder_award_id":"NRF-2015R1D1A1A01060950","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"funders":[{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2936585618.pdf","grobid_xml":"https://content.openalex.org/works/W2936585618.grobid-xml"},"referenced_works_count":40,"referenced_works":["https://openalex.org/W162436151","https://openalex.org/W1503138458","https://openalex.org/W1530276735","https://openalex.org/W1542664738","https://openalex.org/W1972581227","https://openalex.org/W1977489742","https://openalex.org/W1999627569","https://openalex.org/W2006115542","https://openalex.org/W2011367463","https://openalex.org/W2012585029","https://openalex.org/W2033500845","https://openalex.org/W2046471150","https://openalex.org/W2072953282","https://openalex.org/W2084527756","https://openalex.org/W2085040216","https://openalex.org/W2085395398","https://openalex.org/W2105953200","https://openalex.org/W2113858518","https://openalex.org/W2117311203","https://openalex.org/W2126026531","https://openalex.org/W2133266261","https://openalex.org/W2135598826","https://openalex.org/W2135790056","https://openalex.org/W2137245235","https://openalex.org/W2139762415","https://openalex.org/W2142144955","https://openalex.org/W2145360759","https://openalex.org/W2185109260","https://openalex.org/W2248240307","https://openalex.org/W2302504445","https://openalex.org/W2338447355","https://openalex.org/W2340502990","https://openalex.org/W2341865734","https://openalex.org/W2779707836","https://openalex.org/W2792359670","https://openalex.org/W3037946710","https://openalex.org/W4249267926","https://openalex.org/W6676871904","https://openalex.org/W6686602213","https://openalex.org/W7070499600"],"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/W2508671622","https://openalex.org/W2556532874"],"abstract_inverted_index":{"Recommendation":[0],"systems":[1,37,80],"are":[2,22],"widely":[3],"used":[4],"in":[5,29,81,95],"conjunction":[6],"with":[7,103],"many":[8],"popular":[9],"personalized":[10],"services,":[11],"which":[12,30,45],"enables":[13],"people":[14],"to":[15],"find":[16],"not":[17],"only":[18],"content":[19,120,129],"items":[20],"they":[21,31],"currently":[23],"interested":[24],"in,":[25],"but":[26],"also":[27],"those":[28],"might":[32],"become":[33],"interested.":[34],"Many":[35],"recommendation":[36],"employ":[38],"the":[39,56,59,76,116],"memory-based":[40],"collaborative":[41],"filtering":[42],"(CF)":[43],"method,":[44],"has":[46],"been":[47],"generally":[48],"accepted":[49],"as":[50,69],"one":[51],"of":[52,58,78,118,127,137],"consensus":[53],"approaches.":[54],"Despite":[55],"usefulness":[57],"CF":[60,79],"method":[61],"for":[62],"successful":[63],"recommendation,":[64],"several":[65],"limitations":[66],"remain,":[67],"such":[68],"sparsity":[70],"and":[71,107,121],"cold-start":[72],"problems":[73],"that":[74,92],"degrade":[75],"performance":[77],"practice.":[82],"To":[83],"overcome":[84],"these":[85],"limitations,":[86],"we":[87],"propose":[88],"a":[89,124,134,141],"content-metadata-based":[90],"approach":[91,113],"uses":[93],"content-metadata":[94,102],"an":[96],"effective":[97],"way.":[98],"By":[99],"complementarily":[100],"combining":[101],"conventional":[104],"user-content":[105],"ratings":[106],"trust":[108],"network":[109],"information,":[110],"our":[111],"proposed":[112],"remarkably":[114],"increases":[115],"amount":[117],"suggested":[119],"accurately":[122],"recommends":[123],"large":[125],"number":[126],"additional":[128],"items.":[130],"Experimental":[131],"results":[132],"show":[133],"significant":[135],"enhancement":[136],"performance,":[138],"especially":[139],"under":[140],"sparse":[142],"rating":[143],"environment.":[144]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}
