{"id":"https://openalex.org/W7161258314","doi":"https://doi.org/10.1111/exsy.70297","title":"<scp>CF</scp> \u2010 <scp>SBERTHet</scp> : Collaborative and Textual Knowledge Enhanced Semantic Graphs for Sparse Recommendations","display_name":"<scp>CF</scp> \u2010 <scp>SBERTHet</scp> : Collaborative and Textual Knowledge Enhanced Semantic Graphs for Sparse Recommendations","publication_year":2026,"publication_date":"2026-05-15","ids":{"openalex":"https://openalex.org/W7161258314","doi":"https://doi.org/10.1111/exsy.70297"},"language":"en","primary_location":{"id":"doi:10.1111/exsy.70297","is_oa":true,"landing_page_url":"https://doi.org/10.1111/exsy.70297","pdf_url":null,"source":{"id":"https://openalex.org/S72232612","display_name":"Expert Systems","issn_l":"0266-4720","issn":["0266-4720","1468-0394"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Expert Systems","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.1111/exsy.70297","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5136268950","display_name":"He Ma","orcid":null},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]},{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"He Ma","raw_affiliation_strings":["School of Computer Science The University of Sydney  Sydney New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science The University of Sydney  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I129604602","https://openalex.org/I31746571"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5053163275","display_name":"Maryam Khanian Najafabadi","orcid":"https://orcid.org/0000-0002-5071-7515"},"institutions":[{"id":"https://openalex.org/I86695891","display_name":"Australian Catholic University","ror":"https://ror.org/04cxm4j25","country_code":"AU","type":"education","lineage":["https://openalex.org/I86695891"]}],"countries":["AU"],"is_corresponding":true,"raw_author_name":"Maryam Khanian Najafabadi","raw_affiliation_strings":["Computer Science and Data Science Australian Catholic University  Sydney New South Wales Australia"],"raw_orcid":"https://orcid.org/0000-0002-5071-7515","affiliations":[{"raw_affiliation_string":"Computer Science and Data Science Australian Catholic University  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I86695891"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136241840","display_name":"Qiyang Wu","orcid":null},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]},{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Qiyang Wu","raw_affiliation_strings":["School of Computer Science The University of Sydney  Sydney New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science The University of Sydney  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I129604602","https://openalex.org/I31746571"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136222218","display_name":"WeiPing Kong","orcid":null},"institutions":[{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"WeiPing Kong","raw_affiliation_strings":["School of Computer Science and Engineering The University of New South Wales  Sydney New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Engineering The University of New South Wales  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I31746571"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136230151","display_name":"Huajun Jie","orcid":null},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]},{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Huajun Jie","raw_affiliation_strings":["School of Computer Science The University of Sydney  Sydney New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science The University of Sydney  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I129604602","https://openalex.org/I31746571"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136188876","display_name":"Fanye Sun","orcid":null},"institutions":[{"id":"https://openalex.org/I12912129","display_name":"Northeastern University","ror":"https://ror.org/04t5xt781","country_code":"US","type":"education","lineage":["https://openalex.org/I12912129"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Fanye Sun","raw_affiliation_strings":["College of Engineering Northeastern University  Boston Massachusetts USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Engineering Northeastern University  Boston Massachusetts USA","institution_ids":["https://openalex.org/I12912129"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136193729","display_name":"Xiaoyue Bai","orcid":null},"institutions":[{"id":"https://openalex.org/I129604602","display_name":"The University of Sydney","ror":"https://ror.org/0384j8v12","country_code":"AU","type":"education","lineage":["https://openalex.org/I129604602"]},{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Xiaoyue Bai","raw_affiliation_strings":["School of Computer Science The University of Sydney  Sydney New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science The University of Sydney  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I129604602","https://openalex.org/I31746571"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5128703339","display_name":"Mohammadhossein Ahmadi","orcid":null},"institutions":[{"id":"https://openalex.org/I99043593","display_name":"Macquarie University","ror":"https://ror.org/01sf06y89","country_code":"AU","type":"education","lineage":["https://openalex.org/I99043593"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Mohammadhossein Ahmadi","raw_affiliation_strings":["School of Computing, Faculty of Science and Engineering Macquarie University  Sydney New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computing, Faculty of Science and Engineering Macquarie University  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I99043593"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5053163275"],"corresponding_institution_ids":["https://openalex.org/I86695891"],"apc_list":{"value":3860,"currency":"USD","value_usd":3860},"apc_paid":{"value":3860,"currency":"USD","value_usd":3860},"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.74852491,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"43","issue":"7","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.7912999987602234,"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":0.7912999987602234,"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/T12026","display_name":"Explainable Artificial Intelligence (XAI)","score":0.022700000554323196,"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":0.02070000022649765,"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/collaborative-filtering","display_name":"Collaborative filtering","score":0.760699987411499},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.5522000193595886},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.49070000648498535},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.48489999771118164},{"id":"https://openalex.org/keywords/knowledge-graph","display_name":"Knowledge graph","score":0.46700000762939453},{"id":"https://openalex.org/keywords/enhanced-data-rates-for-gsm-evolution","display_name":"Enhanced Data Rates for GSM Evolution","score":0.45509999990463257},{"id":"https://openalex.org/keywords/semantic-similarity","display_name":"Semantic similarity","score":0.3646000027656555}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.902999997138977},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.760699987411499},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.5522000193595886},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.49070000648498535},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.48910000920295715},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.48489999771118164},{"id":"https://openalex.org/C2987255567","wikidata":"https://www.wikidata.org/wiki/Q33002955","display_name":"Knowledge graph","level":2,"score":0.46700000762939453},{"id":"https://openalex.org/C162307627","wikidata":"https://www.wikidata.org/wiki/Q204833","display_name":"Enhanced Data Rates for GSM Evolution","level":2,"score":0.45509999990463257},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4043999910354614},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.37389999628067017},{"id":"https://openalex.org/C130318100","wikidata":"https://www.wikidata.org/wiki/Q2268914","display_name":"Semantic similarity","level":2,"score":0.3646000027656555},{"id":"https://openalex.org/C2779304628","wikidata":"https://www.wikidata.org/wiki/Q3503480","display_name":"Face (sociological concept)","level":2,"score":0.3328000009059906},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.3280999958515167},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.3278000056743622},{"id":"https://openalex.org/C56372850","wikidata":"https://www.wikidata.org/wiki/Q1050404","display_name":"Sparse matrix","level":3,"score":0.3237999975681305},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3046000003814697},{"id":"https://openalex.org/C193125573","wikidata":"https://www.wikidata.org/wiki/Q7449065","display_name":"Semantic interpretation","level":2,"score":0.29580000042915344},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.2955000102519989},{"id":"https://openalex.org/C184337299","wikidata":"https://www.wikidata.org/wiki/Q1437428","display_name":"Semantics (computer science)","level":2,"score":0.28459998965263367},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.2671999931335449},{"id":"https://openalex.org/C107457646","wikidata":"https://www.wikidata.org/wiki/Q207434","display_name":"Human\u2013computer interaction","level":1,"score":0.2556000053882599},{"id":"https://openalex.org/C12725497","wikidata":"https://www.wikidata.org/wiki/Q810247","display_name":"Baseline (sea)","level":2,"score":0.25459998846054077},{"id":"https://openalex.org/C2778956030","wikidata":"https://www.wikidata.org/wiki/Q5142477","display_name":"Cold start (automotive)","level":2,"score":0.25049999356269836}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1111/exsy.70297","is_oa":true,"landing_page_url":"https://doi.org/10.1111/exsy.70297","pdf_url":null,"source":{"id":"https://openalex.org/S72232612","display_name":"Expert Systems","issn_l":"0266-4720","issn":["0266-4720","1468-0394"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Expert Systems","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1111/exsy.70297","is_oa":true,"landing_page_url":"https://doi.org/10.1111/exsy.70297","pdf_url":null,"source":{"id":"https://openalex.org/S72232612","display_name":"Expert Systems","issn_l":"0266-4720","issn":["0266-4720","1468-0394"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Expert Systems","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W2061873838","https://openalex.org/W2475334473","https://openalex.org/W2575006718","https://openalex.org/W2904156528","https://openalex.org/W2963367478","https://openalex.org/W3045200674","https://openalex.org/W4221058021","https://openalex.org/W4226211967","https://openalex.org/W4282934351","https://openalex.org/W4389777839","https://openalex.org/W4393156838","https://openalex.org/W4396758712","https://openalex.org/W4401863964","https://openalex.org/W4402670099","https://openalex.org/W4403577399","https://openalex.org/W4404254488","https://openalex.org/W4404287629","https://openalex.org/W4406714917","https://openalex.org/W4408973509","https://openalex.org/W7131347997"],"related_works":[],"abstract_inverted_index":{"ABSTRACT":[0],"Modern":[1],"e\u2010commerce":[2,203],"platforms":[3],"face":[4],"a":[5,43,75],"critical":[6],"challenge:":[7],"delivering":[8],"accurate":[9],"recommendations":[10],"under":[11],"extreme":[12],"user\u2013item":[13],"interaction":[14,154],"sparsity,":[15],"where":[16],"textual":[17,169],"context":[18],"remains":[19],"systematically":[20],"underutilised.":[21],"Existing":[22],"collaborative":[23,37,49,77,167],"filtering":[24,50,78],"methods":[25],"degrade":[26],"sharply":[27],"in":[28,135,200],"sparse":[29,201],"settings,":[30],"while":[31],"semantic":[32,54,81],"approaches":[33],"fail":[34],"to":[35,183],"capture":[36],"patterns":[38],"effectively.":[39],"We":[40],"propose":[41],"CF\u2010SBERTHet,":[42],"unified":[44],"recommendation":[45,199],"framework":[46],"that":[47,125,162],"integrates":[48],"signals":[51],"with":[52,80],"rich":[53],"information":[55],"extracted":[56,83],"from":[57,74],"user":[58],"reviews":[59],"through":[60,92],"heterogeneous":[61,173],"graph":[62,174],"neural":[63],"networks.":[64],"Our":[65],"approach":[66],"generates":[67],"enriched":[68],"item":[69,107],"embeddings":[70],"by":[71],"aligning":[72],"representations":[73],"pre\u2010trained":[76],"model":[79],"features":[82],"via":[84],"Sentence\u2010BERT,":[85],"and":[86,105,120,122,144,168,176,193],"then":[87],"models":[88],"complex":[89],"multi\u2010relational":[90],"interactions":[91],"type\u2010specific":[93],"message":[94],"passing":[95],"over":[96],"seven":[97],"distinct":[98],"edge":[99,179],"types,":[100],"encompassing":[101],"ratings,":[102],"reviews,":[103],"purchases,":[104],"contextual":[106],"similarities.":[108],"Extensive":[109],"experiments":[110],"on":[111],"four":[112],"Amazon":[113],"2023":[114],"datasets":[115],"(Fashion,":[116],"Beauty,":[117],"Musical":[118],"Instruments":[119],"Movies":[121],"TV)":[123],"demonstrate":[124],"CF\u2010SBERTHet":[126,189],"consistently":[127],"outperforms":[128],"competitive":[129],"baselines":[130],"across":[131],"all":[132],"evaluation":[133],"settings":[134],"terms":[136],"of":[137],"both":[138],"Root":[139],"Mean":[140,145],"Square":[141],"Error":[142,147],"(RMSE)":[143],"Absolute":[146],"(MAE),":[148],"achieving":[149],"robust":[150],"performance":[151],"even":[152],"at":[153],"sparsities":[155],"exceeding":[156],"99%.":[157],"Comprehensive":[158],"ablation":[159],"studies":[160],"confirm":[161],"each":[163],"component,":[164],"namely":[165],"the":[166,172,177],"knowledge\u2010enriched":[170],"embeddings,":[171],"architecture,":[175],"review\u2010based":[178],"weights,":[180],"contributes":[181],"critically":[182],"overall":[184],"performance.":[185],"These":[186],"results":[187],"establish":[188],"as":[190],"an":[191],"effective":[192],"broadly":[194],"applicable":[195],"solution":[196],"for":[197],"context\u2010aware":[198],"real\u2010world":[202],"environments.":[204]},"counts_by_year":[],"updated_date":"2026-06-18T08:10:14.011955","created_date":"2026-05-16T00:00:00"}