{"id":"https://openalex.org/W4411549712","doi":"https://doi.org/10.1145/3701716.3715449","title":"Investigating Cross-Domain Capabilities of LLMs in Two-Stage Recommender Systems","display_name":"Investigating Cross-Domain Capabilities of LLMs in Two-Stage Recommender Systems","publication_year":2025,"publication_date":"2025-05-08","ids":{"openalex":"https://openalex.org/W4411549712","doi":"https://doi.org/10.1145/3701716.3715449"},"language":"en","primary_location":{"id":"doi:10.1145/3701716.3715449","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3701716.3715449","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Companion Proceedings of the ACM on Web Conference 2025","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/A5118595722","display_name":"Mohamed Islem Kara Bernou","orcid":"https://orcid.org/0009-0008-2866-9917"},"institutions":[{"id":"https://openalex.org/I120250893","display_name":"New York University Abu Dhabi","ror":"https://ror.org/00e5k0821","country_code":"AE","type":"education","lineage":["https://openalex.org/I120250893","https://openalex.org/I57206974"]}],"countries":["AE"],"is_corresponding":true,"raw_author_name":"Mohamed Islem Kara Bernou","raw_affiliation_strings":["New York University Abu Dhabi, Abu Dhabi, United Arab Emirates"],"affiliations":[{"raw_affiliation_string":"New York University Abu Dhabi, Abu Dhabi, United Arab Emirates","institution_ids":["https://openalex.org/I120250893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039519070","display_name":"Aghiles Salah","orcid":"https://orcid.org/0000-0001-6749-244X"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Aghiles Salah","raw_affiliation_strings":["Rakuten Group, Inc., Paris, France"],"affiliations":[{"raw_affiliation_string":"Rakuten Group, Inc., Paris, France","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5037641097","display_name":"Alexandru Tatar","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Alexandru Tatar","raw_affiliation_strings":["Rakuten Group, Inc., Paris, France"],"affiliations":[{"raw_affiliation_string":"Rakuten Group, Inc., Paris, France","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5118595722"],"corresponding_institution_ids":["https://openalex.org/I120250893"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.07035312,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1058","last_page":"1061"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10028","display_name":"Topic Modeling","score":0.9986000061035156,"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"}},"topics":[{"id":"https://openalex.org/T10028","display_name":"Topic Modeling","score":0.9986000061035156,"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/T10203","display_name":"Recommender Systems and Techniques","score":0.9979000091552734,"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/T10181","display_name":"Natural Language Processing Techniques","score":0.9916999936103821,"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/recommender-system","display_name":"Recommender system","score":0.8213247656822205},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6985740661621094},{"id":"https://openalex.org/keywords/domain","display_name":"Domain (mathematical analysis)","score":0.6045942902565002},{"id":"https://openalex.org/keywords/stage","display_name":"Stage (stratigraphy)","score":0.5315079092979431},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.34278959035873413},{"id":"https://openalex.org/keywords/biology","display_name":"Biology","score":0.07155221700668335},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.054555267095565796}],"concepts":[{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.8213247656822205},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6985740661621094},{"id":"https://openalex.org/C36503486","wikidata":"https://www.wikidata.org/wiki/Q11235244","display_name":"Domain (mathematical analysis)","level":2,"score":0.6045942902565002},{"id":"https://openalex.org/C146357865","wikidata":"https://www.wikidata.org/wiki/Q1123245","display_name":"Stage (stratigraphy)","level":2,"score":0.5315079092979431},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.34278959035873413},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.07155221700668335},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.054555267095565796},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3701716.3715449","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3701716.3715449","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Companion Proceedings of the ACM on Web Conference 2025","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W2027731328","https://openalex.org/W2740605635","https://openalex.org/W2970641574","https://openalex.org/W2998702515","https://openalex.org/W3040516071","https://openalex.org/W3115386848","https://openalex.org/W3199751003","https://openalex.org/W3200974209","https://openalex.org/W4231990774","https://openalex.org/W4307079201","https://openalex.org/W4367046880","https://openalex.org/W4386081001","https://openalex.org/W4386728933","https://openalex.org/W4401834466","https://openalex.org/W4403220999","https://openalex.org/W4403221074","https://openalex.org/W4404742642"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W4390273403","https://openalex.org/W4386781444","https://openalex.org/W2150182025","https://openalex.org/W3092950680","https://openalex.org/W3197542405","https://openalex.org/W2056712470","https://openalex.org/W3125580266"],"abstract_inverted_index":{"Leveraging":[0],"Large":[1],"Language":[2],"Models":[3],"(LLMs)":[4],"for":[5,140,154,176],"recommendation":[6,170],"is":[7,134],"an":[8],"emerging":[9],"area":[10],"with":[11,161],"promising":[12],"advancements":[13],"across":[14,74],"various":[15,162],"use":[16],"cases.":[17],"Pursuing":[18],"this":[19,88],"line":[20],"of":[21,85,125],"research,":[22,178],"we":[23,108],"explore":[24],"the":[25,83,94,126,131,138,152,168,174],"complex":[26],"and":[27,76,93,150],"often":[28],"overlooked":[29],"cross-domain":[30,60,169],"scenario":[31],"in":[32,47,87,167],"which":[33,70,133],"user":[34],"preferences":[35],"from":[36,130],"a":[37,48,110,117,122,155],"source":[38],"domain":[39,50],"(e.g.,":[40,51],"Books)":[41],"are":[42],"used":[43],"to":[44,63,120],"recommend":[45],"items":[46,129],"target":[49],"Movies).":[52],"We":[53],"postulate":[54],"that":[55,115],"LLMs":[56,86,163],"can":[57],"significantly":[58],"enhance":[59],"recommendations":[61],"due":[62],"their":[64,165],"pre-training":[65],"on":[66],"extensive":[67],"web-scale":[68],"corpora,":[69],"encompass":[71],"diverse":[72],"knowledge":[73],"languages":[75],"domains.":[77],"However,":[78],"two":[79],"key":[80],"limitations":[81],"hinder":[82],"application":[84],"context:":[89],"input":[90,147],"size":[91,148],"constraints":[92,149],"computationally":[95],"intensive":[96],"autoregressive":[97],"generation":[98,157],"phase,":[99],"making":[100],"real-world":[101],"implementation":[102],"challenging.":[103],"To":[104],"tackle":[105],"these":[106],"issues,":[107],"revisit":[109],"recently":[111],"proposed":[112],"two-stage":[113],"approach":[114,144],"employs":[116],"retrieval":[118],"model":[119],"select":[121],"small":[123],"list":[124],"most":[127],"relevant":[128],"catalog,":[132],"subsequently":[135],"refined":[136],"by":[137],"LLM":[139,182],"final":[141],"recommendations.":[142],"This":[143],"effectively":[145],"addresses":[146],"eliminates":[151],"need":[153,175],"costly":[156],"phase.":[158],"Our":[159],"experiments":[160],"demonstrate":[164],"potential":[166],"context,":[171],"while":[172],"emphasizing":[173],"further":[177],"as":[179],"not":[180],"all":[181],"variants":[183],"consistently":[184],"yield":[185],"improvements.":[186]},"counts_by_year":[],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}