{"id":"https://openalex.org/W4396734745","doi":"https://doi.org/10.1145/3589334.3645347","title":"Collaborative Large Language Model for Recommender Systems","display_name":"Collaborative Large Language Model for Recommender Systems","publication_year":2024,"publication_date":"2024-05-08","ids":{"openalex":"https://openalex.org/W4396734745","doi":"https://doi.org/10.1145/3589334.3645347"},"language":"en","primary_location":{"id":"doi:10.1145/3589334.3645347","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3589334.3645347","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM Web Conference 2024","raw_type":"proceedings-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/A5102911934","display_name":"Yaochen Zhu","orcid":"https://orcid.org/0000-0001-6266-2788"},"institutions":[{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yaochen Zhu","raw_affiliation_strings":["University of Virginia, Charlottesville, VA, USA"],"raw_orcid":"https://orcid.org/0000-0001-6266-2788","affiliations":[{"raw_affiliation_string":"University of Virginia, Charlottesville, VA, USA","institution_ids":["https://openalex.org/I51556381"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101525811","display_name":"Liang Wu","orcid":"https://orcid.org/0000-0002-2336-7695"},"institutions":[{"id":"https://openalex.org/I1316064682","display_name":"LinkedIn (United States)","ror":"https://ror.org/02fyxhe35","country_code":"US","type":"company","lineage":["https://openalex.org/I1290206253","https://openalex.org/I1316064682"]},{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Liang Wu","raw_affiliation_strings":["LinkedIn Inc., Sunnyvale, CA, USA","University of Virginia"],"raw_orcid":"https://orcid.org/0000-0002-2336-7695","affiliations":[{"raw_affiliation_string":"LinkedIn Inc., Sunnyvale, CA, USA","institution_ids":["https://openalex.org/I1316064682"]},{"raw_affiliation_string":"University of Virginia","institution_ids":["https://openalex.org/I51556381"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064156060","display_name":"Qi Guo","orcid":"https://orcid.org/0009-0009-0078-1533"},"institutions":[{"id":"https://openalex.org/I1316064682","display_name":"LinkedIn (United States)","ror":"https://ror.org/02fyxhe35","country_code":"US","type":"company","lineage":["https://openalex.org/I1290206253","https://openalex.org/I1316064682"]},{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Qi Guo","raw_affiliation_strings":["LinkedIn Inc., Sunnyvale, CA, USA","University of Virginia"],"raw_orcid":"https://orcid.org/0009-0009-0078-1533","affiliations":[{"raw_affiliation_string":"LinkedIn Inc., Sunnyvale, CA, USA","institution_ids":["https://openalex.org/I1316064682"]},{"raw_affiliation_string":"University of Virginia","institution_ids":["https://openalex.org/I51556381"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004471013","display_name":"Liangjie Hong","orcid":null},"institutions":[{"id":"https://openalex.org/I1316064682","display_name":"LinkedIn (United States)","ror":"https://ror.org/02fyxhe35","country_code":"US","type":"company","lineage":["https://openalex.org/I1290206253","https://openalex.org/I1316064682"]},{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Liangjie Hong","raw_affiliation_strings":["LinkedIn Inc., Sunnyvale, CA, USA","University of Virginia"],"raw_orcid":"https://orcid.org/0009-0000-4595-4631","affiliations":[{"raw_affiliation_string":"LinkedIn Inc., Sunnyvale, CA, USA","institution_ids":["https://openalex.org/I1316064682"]},{"raw_affiliation_string":"University of Virginia","institution_ids":["https://openalex.org/I51556381"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5029588473","display_name":"Jundong Li","orcid":"https://orcid.org/0000-0002-1878-817X"},"institutions":[{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Jundong Li","raw_affiliation_strings":["University of Virginia, Charlottesville, VA, USA"],"raw_orcid":"https://orcid.org/0000-0002-1878-817X","affiliations":[{"raw_affiliation_string":"University of Virginia, Charlottesville, VA, USA","institution_ids":["https://openalex.org/I51556381"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5029588473"],"corresponding_institution_ids":["https://openalex.org/I51556381"],"apc_list":null,"apc_paid":null,"fwci":56.6046,"has_fulltext":false,"cited_by_count":78,"citation_normalized_percentile":{"value":0.99914937,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"3162","last_page":"3172"},"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/T10028","display_name":"Topic Modeling","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T11273","display_name":"Advanced Graph Neural Networks","score":0.9793000221252441,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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":0.8606184720993042},{"id":"https://openalex.org/keywords/rss","display_name":"RSS","score":0.6178344488143921},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.5779606699943542},{"id":"https://openalex.org/keywords/vocabulary","display_name":"Vocabulary","score":0.5360316038131714},{"id":"https://openalex.org/keywords/natural-language-processing","display_name":"Natural language processing","score":0.5054128170013428},{"id":"https://openalex.org/keywords/semantics","display_name":"Semantics (computer science)","score":0.4902661144733429},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4755163788795471},{"id":"https://openalex.org/keywords/generative-model","display_name":"Generative model","score":0.4586728513240814},{"id":"https://openalex.org/keywords/language-model","display_name":"Language model","score":0.4344046115875244},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.41462939977645874},{"id":"https://openalex.org/keywords/generative-grammar","display_name":"Generative grammar","score":0.2770026922225952},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.210738867521286}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8606184720993042},{"id":"https://openalex.org/C2385561","wikidata":"https://www.wikidata.org/wiki/Q45432","display_name":"RSS","level":2,"score":0.6178344488143921},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.5779606699943542},{"id":"https://openalex.org/C2777601683","wikidata":"https://www.wikidata.org/wiki/Q6499736","display_name":"Vocabulary","level":2,"score":0.5360316038131714},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.5054128170013428},{"id":"https://openalex.org/C184337299","wikidata":"https://www.wikidata.org/wiki/Q1437428","display_name":"Semantics (computer science)","level":2,"score":0.4902661144733429},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4755163788795471},{"id":"https://openalex.org/C167966045","wikidata":"https://www.wikidata.org/wiki/Q5532625","display_name":"Generative model","level":3,"score":0.4586728513240814},{"id":"https://openalex.org/C137293760","wikidata":"https://www.wikidata.org/wiki/Q3621696","display_name":"Language model","level":2,"score":0.4344046115875244},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.41462939977645874},{"id":"https://openalex.org/C39890363","wikidata":"https://www.wikidata.org/wiki/Q36108","display_name":"Generative grammar","level":2,"score":0.2770026922225952},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.210738867521286},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3589334.3645347","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3589334.3645347","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the ACM Web Conference 2024","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Quality Education","id":"https://metadata.un.org/sdg/4","score":0.6299999952316284}],"awards":[{"id":"https://openalex.org/G154432479","display_name":null,"funder_award_id":"IIS-2006844, IIS-2144209, IIS-2223769, CNS2154962, BCS-2228534","funder_id":"https://openalex.org/F4320323817","funder_display_name":"Universitas Brawijaya"}],"funders":[{"id":"https://openalex.org/F4320323817","display_name":"Universitas Brawijaya","ror":"https://ror.org/01wk3d929"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":24,"referenced_works":["https://openalex.org/W1412447802","https://openalex.org/W1503398984","https://openalex.org/W2101409192","https://openalex.org/W2116206254","https://openalex.org/W2140310134","https://openalex.org/W2243869100","https://openalex.org/W2787512446","https://openalex.org/W2896457183","https://openalex.org/W2984100107","https://openalex.org/W3065542300","https://openalex.org/W3100260481","https://openalex.org/W3191566939","https://openalex.org/W4221158409","https://openalex.org/W4224323490","https://openalex.org/W4226280022","https://openalex.org/W4296591867","https://openalex.org/W4360612299","https://openalex.org/W4379539784","https://openalex.org/W4382246105","https://openalex.org/W4403195962","https://openalex.org/W6680451568","https://openalex.org/W6684173853","https://openalex.org/W6739901393","https://openalex.org/W6857406411"],"related_works":["https://openalex.org/W426968574","https://openalex.org/W2365639220","https://openalex.org/W2382520895","https://openalex.org/W2393709043","https://openalex.org/W2080567403","https://openalex.org/W2539387137","https://openalex.org/W2374952201","https://openalex.org/W2374808384","https://openalex.org/W2385449752","https://openalex.org/W3177075132"],"abstract_inverted_index":{"Recently,":[0],"there":[1],"has":[2],"been":[3],"growing":[4],"interest":[5],"in":[6],"developing":[7],"the":[8,21,62,69,80,87,203],"next-generation":[9],"recommender":[10],"systems":[11],"(RSs)":[12],"based":[13,211],"on":[14,48,122,212],"pretrained":[15,90,204],"large":[16],"language":[17,26,46,120,160],"models":[18],"(LLMs).":[19],"However,":[20],"semantic":[22],"gap":[23],"between":[24],"natural":[25],"and":[27,72,101,139,143,158],"recommendation":[28],"tasks":[29],"is":[30,110,128,169,200],"still":[31],"not":[32],"well":[33],"addressed,":[34],"leading":[35],"to":[36,78,96,112,155,171,174,202,207],"multiple":[37,224],"issues":[38],"such":[39],"as":[40],"spuriously":[41],"correlated":[42],"user/item":[43,49,93,99,115,180],"descriptors,":[44],"ineffective":[45],"modeling":[47,121],"data,":[50],"inefficient":[51],"recommendations":[52,222],"via":[53,119],"auto-regression,":[54],"etc.":[55],"In":[56,162],"this":[57],"paper,":[58],"we":[59,183],"propose":[60,184],"CLLM4Rec,":[61,191],"first":[63,85],"generative":[64],"RS":[65],"that":[66],"tightly":[67],"integrates":[68],"LLM":[70],"paradigm":[71,74],"ID":[73,94],"of":[75,89,134,148,223],"RSs,":[76],"aiming":[77],"address":[79],"above":[81],"challenges":[82],"simultaneously.":[83],"We":[84],"extend":[86],"vocabulary":[88],"LLMs":[91],"with":[92,197],"tokens":[95,138,142,151,154],"faithfully":[97],"model":[98],"collaborative":[100],"content":[102],"semantics.":[103],"Accordingly,":[104],"a":[105,131,144,164,185],"novel":[106,165,186],"soft+hard":[107,213],"prompting":[108],"strategy":[109,168,189],"proposed":[111],"effectively":[113],"learn":[114],"collaborative/content":[116],"token":[117],"embeddings":[118],"RS-specific":[123],"corpora,":[124],"where":[125,192,221],"each":[126],"document":[127],"split":[129],"into":[130],"prompt":[132],"consisting":[133,147],"heterogeneous":[135],"soft":[136],"(user/item)":[137],"hard":[140],"(vocab)":[141],"main":[145],"text":[146],"homogeneous":[149],"item":[150,194],"or":[152],"vocab":[153],"facilitate":[156],"stable":[157],"effective":[159],"modeling.":[161],"addition,":[163],"mutual":[166],"regularization":[167],"introduced":[170],"encourage":[172],"CLLM4Rec":[173,205],"capture":[175],"recommendation-related":[176],"information":[177],"from":[178,216],"noisy":[179],"content.":[181],"Finally,":[182],"recommendation-oriented":[187],"finetuning":[188],"for":[190],"an":[193],"prediction":[195],"head":[196],"multinomial":[198],"likelihood":[199],"added":[201],"backbone":[206],"predict":[208],"hold-out":[209],"items":[210,225],"prompts":[214],"established":[215],"masked":[217],"user-item":[218],"interaction":[219],"history,":[220],"can":[226],"be":[227],"generated":[228],"efficiently":[229],"without":[230],"hallucination.":[231]},"counts_by_year":[{"year":2026,"cited_by_count":9},{"year":2025,"cited_by_count":57},{"year":2024,"cited_by_count":12}],"updated_date":"2026-05-10T08:33:47.465468","created_date":"2025-10-10T00:00:00"}