{"id":"https://openalex.org/W4411031516","doi":"https://doi.org/10.1145/3742898","title":"Sheaf4Rec: Sheaf Neural Networks for Graph-based Recommender Systems","display_name":"Sheaf4Rec: Sheaf Neural Networks for Graph-based Recommender Systems","publication_year":2025,"publication_date":"2025-06-04","ids":{"openalex":"https://openalex.org/W4411031516","doi":"https://doi.org/10.1145/3742898"},"language":"en","primary_location":{"id":"doi:10.1145/3742898","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3742898","pdf_url":null,"source":{"id":"https://openalex.org/S4387284325","display_name":"ACM Transactions on Recommender Systems","issn_l":"2770-6699","issn":["2770-6699"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Recommender Systems","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.1145/3742898","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5010418278","display_name":"Antonio Purificato","orcid":"https://orcid.org/0009-0009-3933-380X"},"institutions":[{"id":"https://openalex.org/I1311688040","display_name":"Amazon (United States)","ror":"https://ror.org/04mv4n011","country_code":"US","type":"company","lineage":["https://openalex.org/I1311688040"]},{"id":"https://openalex.org/I861853513","display_name":"Sapienza University of Rome","ror":"https://ror.org/02be6w209","country_code":"IT","type":"education","lineage":["https://openalex.org/I861853513"]}],"countries":["IT","US"],"is_corresponding":false,"raw_author_name":"Antonio Purificato","raw_affiliation_strings":["Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","Eu Intech, Amazon Europe Core S\u00e0rl","Eu Intech, Amazon Europe Core S\u00e0rl, Luxembourg, Luxembourg"],"raw_orcid":"https://orcid.org/0009-0009-3933-380X","affiliations":[{"raw_affiliation_string":"Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","institution_ids":["https://openalex.org/I861853513"]},{"raw_affiliation_string":"Eu Intech, Amazon Europe Core S\u00e0rl","institution_ids":["https://openalex.org/I1311688040"]},{"raw_affiliation_string":"Eu Intech, Amazon Europe Core S\u00e0rl, Luxembourg, Luxembourg","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056068005","display_name":"Giulia Cassar\u00e0","orcid":"https://orcid.org/0009-0007-2596-7452"},"institutions":[{"id":"https://openalex.org/I4210135106","display_name":"Universit\u00e0 degli Studi Internazionali di Roma","ror":"https://ror.org/037263487","country_code":"IT","type":"education","lineage":["https://openalex.org/I4210135106"]},{"id":"https://openalex.org/I861853513","display_name":"Sapienza University of Rome","ror":"https://ror.org/02be6w209","country_code":"IT","type":"education","lineage":["https://openalex.org/I861853513"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Giulia Cassar\u00e0","raw_affiliation_strings":["Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon, Rome, Italy"],"raw_orcid":"https://orcid.org/0009-0007-2596-7452","affiliations":[{"raw_affiliation_string":"Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","institution_ids":["https://openalex.org/I861853513"]},{"raw_affiliation_string":"Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon, Rome, Italy","institution_ids":["https://openalex.org/I861853513","https://openalex.org/I4210135106"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5074346581","display_name":"Federico Siciliano","orcid":"https://orcid.org/0000-0003-1339-6983"},"institutions":[{"id":"https://openalex.org/I4210135106","display_name":"Universit\u00e0 degli Studi Internazionali di Roma","ror":"https://ror.org/037263487","country_code":"IT","type":"education","lineage":["https://openalex.org/I4210135106"]},{"id":"https://openalex.org/I861853513","display_name":"Sapienza University of Rome","ror":"https://ror.org/02be6w209","country_code":"IT","type":"education","lineage":["https://openalex.org/I861853513"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Federico Siciliano","raw_affiliation_strings":["Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon, Rome, Italy"],"raw_orcid":"https://orcid.org/0000-0003-1339-6983","affiliations":[{"raw_affiliation_string":"Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","institution_ids":["https://openalex.org/I861853513"]},{"raw_affiliation_string":"Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon, Rome, Italy","institution_ids":["https://openalex.org/I861853513","https://openalex.org/I4210135106"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056748708","display_name":"P\u00edetro Li\u00f3","orcid":"https://orcid.org/0000-0002-0540-5053"},"institutions":[{"id":"https://openalex.org/I241749","display_name":"University of Cambridge","ror":"https://ror.org/013meh722","country_code":"GB","type":"education","lineage":["https://openalex.org/I241749"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Pietro Li\u00f2","raw_affiliation_strings":["Computer Science and Technology, University of Cambridge","Computer Science and Technology, University of Cambridge, Cambridge, United Kingdom of Great Britain and Northern Ireland"],"raw_orcid":"https://orcid.org/0000-0002-0540-5053","affiliations":[{"raw_affiliation_string":"Computer Science and Technology, University of Cambridge","institution_ids":["https://openalex.org/I241749"]},{"raw_affiliation_string":"Computer Science and Technology, University of Cambridge, Cambridge, United Kingdom of Great Britain and Northern Ireland","institution_ids":["https://openalex.org/I241749"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044165871","display_name":"Fabrizio Silvestri","orcid":"https://orcid.org/0000-0001-7669-9055"},"institutions":[{"id":"https://openalex.org/I4210135106","display_name":"Universit\u00e0 degli Studi Internazionali di Roma","ror":"https://ror.org/037263487","country_code":"IT","type":"education","lineage":["https://openalex.org/I4210135106"]},{"id":"https://openalex.org/I861853513","display_name":"Sapienza University of Rome","ror":"https://ror.org/02be6w209","country_code":"IT","type":"education","lineage":["https://openalex.org/I861853513"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Fabrizio Silvestri","raw_affiliation_strings":["Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon, Rome, Italy"],"raw_orcid":"https://orcid.org/0000-0001-7669-9055","affiliations":[{"raw_affiliation_string":"Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon","institution_ids":["https://openalex.org/I861853513"]},{"raw_affiliation_string":"Department of computer, control and management engineering Antonio Ruberti, Universita degli Studi di Roma La Sapienza and Amazon, Rome, Italy","institution_ids":["https://openalex.org/I861853513","https://openalex.org/I4210135106"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.3589,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.88605889,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":98},"biblio":{"volume":"4","issue":"2","first_page":"1","last_page":"26"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9995999932289124,"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":0.9995999932289124,"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/T11273","display_name":"Advanced Graph Neural Networks","score":0.9994999766349792,"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/T12292","display_name":"Graph Theory and Algorithms","score":0.9955999851226807,"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/recommender-system","display_name":"Recommender system","score":0.7116467952728271},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6164646744728088},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.4851011037826538},{"id":"https://openalex.org/keywords/sheaf","display_name":"Sheaf","score":0.4822167158126831},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4680088758468628},{"id":"https://openalex.org/keywords/artificial-neural-network","display_name":"Artificial neural network","score":0.44112205505371094},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.339202344417572},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.26301059126853943},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.21604347229003906},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.08617821335792542}],"concepts":[{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.7116467952728271},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6164646744728088},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.4851011037826538},{"id":"https://openalex.org/C4017995","wikidata":"https://www.wikidata.org/wiki/Q595298","display_name":"Sheaf","level":2,"score":0.4822167158126831},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4680088758468628},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.44112205505371094},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.339202344417572},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.26301059126853943},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.21604347229003906},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.08617821335792542}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/3742898","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3742898","pdf_url":null,"source":{"id":"https://openalex.org/S4387284325","display_name":"ACM Transactions on Recommender Systems","issn_l":"2770-6699","issn":["2770-6699"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Recommender Systems","raw_type":"journal-article"},{"id":"pmh:oai:iris.uniroma1.it:11573/1741348","is_oa":true,"landing_page_url":"https://hdl.handle.net/11573/1741348","pdf_url":null,"source":{"id":"https://openalex.org/S4377196107","display_name":"IRIS Research product catalog (Sapienza University of Rome)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"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":null,"raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"doi:10.1145/3742898","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3742898","pdf_url":null,"source":{"id":"https://openalex.org/S4387284325","display_name":"ACM Transactions on Recommender Systems","issn_l":"2770-6699","issn":["2770-6699"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Recommender Systems","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":49,"referenced_works":["https://openalex.org/W805665992","https://openalex.org/W1534018603","https://openalex.org/W1587744656","https://openalex.org/W1720514416","https://openalex.org/W1886704267","https://openalex.org/W1902027874","https://openalex.org/W1969269637","https://openalex.org/W2027731328","https://openalex.org/W2042281163","https://openalex.org/W2054141820","https://openalex.org/W2081332171","https://openalex.org/W2116341502","https://openalex.org/W2134584261","https://openalex.org/W2140310134","https://openalex.org/W2159094788","https://openalex.org/W2509678028","https://openalex.org/W2600702321","https://openalex.org/W2601071158","https://openalex.org/W2792839191","https://openalex.org/W2907492528","https://openalex.org/W2913059114","https://openalex.org/W2951707557","https://openalex.org/W2963367478","https://openalex.org/W2964015378","https://openalex.org/W2970791029","https://openalex.org/W2978508283","https://openalex.org/W3045200674","https://openalex.org/W3094457149","https://openalex.org/W3098087397","https://openalex.org/W3105346780","https://openalex.org/W3154818219","https://openalex.org/W3201592806","https://openalex.org/W4221155895","https://openalex.org/W4226237846","https://openalex.org/W4281710891","https://openalex.org/W4288083766","https://openalex.org/W4289244057","https://openalex.org/W4297733535","https://openalex.org/W4315977496","https://openalex.org/W4362514929","https://openalex.org/W4384828132","https://openalex.org/W4385567536","https://openalex.org/W4386729825","https://openalex.org/W4386730465","https://openalex.org/W4387294116","https://openalex.org/W4392899608","https://openalex.org/W4403577886","https://openalex.org/W4405754319","https://openalex.org/W6856555887"],"related_works":["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","https://openalex.org/W4288390103","https://openalex.org/W4317039510","https://openalex.org/W4238861846"],"abstract_inverted_index":{"Recent":[0],"advancements":[1],"in":[2,12,24,36,118,199],"Graph":[3,177],"Neural":[4,94,176],"Networks":[5,95],"(GNN)":[6],"have":[7,19],"facilitated":[8],"their":[9,97],"widespread":[10],"adoption":[11],"various":[13],"applications,":[14],"including":[15],"recommendation":[16,30],"systems.":[17],"GNNs":[18],"proven":[20],"to":[21,135,156,166,190,212,216],"be":[22,125],"effective":[23],"addressing":[25],"the":[26,65],"challenges":[27],"posed":[28],"by":[29,32,54,85],"systems":[31],"efficiently":[33],"modeling":[34],"graphs":[35],"which":[37,61],"nodes":[38,53],"represent":[39,52,100],"users":[40,69],"or":[41],"items":[42],"and":[43,70,96,116,142,160,182],"edges":[44],"denote":[45],"preference":[46],"relationships.":[47],"However,":[48],"current":[49],"GNN":[50],"techniques":[51],"means":[55],"of":[56,68,113,139,154,164,201,226],"a":[57,78,81,106,119,131,136,150,222],"single":[58,90],"static":[59],"vector,":[60],"may":[62],"inadequately":[63],"capture":[64],"intricate":[66],"complexities":[67],"items.":[71],"To":[72],"overcome":[73],"these":[74],"limitations,":[75],"we":[76,203],"propose":[77],"solution":[79],"integrating":[80],"cutting-edge":[82],"model":[83,148],"inspired":[84],"category":[86],"theory:":[87],"Sheaf4Rec.":[88],"Unlike":[89],"vector":[91,107],"representations,":[92],"Sheaf":[93],"corresponding":[98],"Laplacians":[99],"each":[101],"node":[102],"(and":[103],"edge)":[104],"using":[105],"space.":[108],"Our":[109,146],"approach":[110],"takes":[111],"advantage":[112],"this":[114],"theory":[115],"results":[117],"more":[120,223],"comprehensive":[121],"representation":[122],"that":[123],"can":[124],"effectively":[126],"exploited":[127],"during":[128],"inference,":[129],"providing":[130],"versatile":[132],"method":[133],"applicable":[134],"wide":[137],"range":[138],"graph-related":[140],"tasks":[141],"demonstrating":[143],"unparalleled":[144],"performance.":[145,232],"proposed":[147],"exhibits":[149],"noteworthy":[151],"relative":[152],"improvement":[153],"up":[155,165,211],"8.53%":[157],"on":[158,168],"F1-Score@10":[159],"an":[161],"impressive":[162],"increase":[163],"11.29%":[167],"NDCG@10,":[169],"outperforming":[170],"existing":[171],"state-of-the-art":[172],"models":[173],"such":[174],"as":[175],"Collaborative":[178],"Filtering":[179],"(NGCF),":[180],"KGTORe":[181],"other":[183,217],"recently":[184],"developed":[185],"GNN-based":[186,218],"models.":[187],"In":[188],"addition":[189],"its":[191],"superior":[192],"predictive":[193],"capabilities,":[194],"Sheaf4Rec":[195],"shows":[196],"remarkable":[197],"improvements":[198,207],"terms":[200],"efficiency:":[202],"observe":[204],"substantial":[205],"runtime":[206],"ranging":[208],"from":[209],"2.5%":[210],"37%":[213],"when":[214],"compared":[215],"competitor":[219],"models,":[220],"indicating":[221],"efficient":[224],"way":[225],"handling":[227],"information":[228],"while":[229],"achieving":[230],"better":[231],"Code":[233],"is":[234],"available":[235],"at":[236],"https://github.com/antoniopurificato/Sheaf4Rec":[237],".":[238]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}