{"id":"https://openalex.org/W4414995525","doi":"https://doi.org/10.1007/s00530-025-01995-z","title":"SiGR: a novel sign-aware graph neural network for recommender systems","display_name":"SiGR: a novel sign-aware graph neural network for recommender systems","publication_year":2025,"publication_date":"2025-10-09","ids":{"openalex":"https://openalex.org/W4414995525","doi":"https://doi.org/10.1007/s00530-025-01995-z"},"language":"en","primary_location":{"id":"doi:10.1007/s00530-025-01995-z","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00530-025-01995-z","pdf_url":null,"source":{"id":"https://openalex.org/S112262039","display_name":"Multimedia Systems","issn_l":"0942-4962","issn":["0942-4962","1432-1882"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Multimedia Systems","raw_type":"journal-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/A5106838086","display_name":"Abed Heshmati","orcid":"https://orcid.org/0009-0005-6184-2222"},"institutions":[{"id":"https://openalex.org/I55547365","display_name":"Payame Noor University","ror":"https://ror.org/031699d98","country_code":"IR","type":"education","lineage":["https://openalex.org/I55547365"]},{"id":"https://openalex.org/I99861883","display_name":"University of Zanjan","ror":"https://ror.org/05e34ej29","country_code":"IR","type":"education","lineage":["https://openalex.org/I99861883"]}],"countries":["IR"],"is_corresponding":true,"raw_author_name":"Abed Heshmati","raw_affiliation_strings":["Department of Computer Engineering and Information Technology, Payame Noor University (PNU), Tehran, Iran","Department of Computer Engineering, University of Zanjan, Zanjan, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering and Information Technology, Payame Noor University (PNU), Tehran, Iran","institution_ids":["https://openalex.org/I55547365"]},{"raw_affiliation_string":"Department of Computer Engineering, University of Zanjan, Zanjan, Iran","institution_ids":["https://openalex.org/I99861883"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047882313","display_name":"Mohsen Afsharchi","orcid":"https://orcid.org/0000-0001-8329-9463"},"institutions":[{"id":"https://openalex.org/I99861883","display_name":"University of Zanjan","ror":"https://ror.org/05e34ej29","country_code":"IR","type":"education","lineage":["https://openalex.org/I99861883"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Mohsen Afsharchi","raw_affiliation_strings":["Department of Computer Engineering, University of Zanjan, Zanjan, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering, University of Zanjan, Zanjan, Iran","institution_ids":["https://openalex.org/I99861883"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079645370","display_name":"Sajad Ahmadian","orcid":"https://orcid.org/0000-0002-3080-3192"},"institutions":[{"id":"https://openalex.org/I4210151845","display_name":"Kermanshah University of Technology","ror":"https://ror.org/05hkxne09","country_code":"IR","type":"education","lineage":["https://openalex.org/I4210151845"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Sajad Ahmadian","raw_affiliation_strings":["Faculty of Information Technology, Kermanshah University of Technology, Kermanshah, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Information Technology, Kermanshah University of Technology, Kermanshah, Iran","institution_ids":["https://openalex.org/I4210151845"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5050165141","display_name":"Majid Meghdad\u0131","orcid":"https://orcid.org/0000-0003-4487-7296"},"institutions":[{"id":"https://openalex.org/I99861883","display_name":"University of Zanjan","ror":"https://ror.org/05e34ej29","country_code":"IR","type":"education","lineage":["https://openalex.org/I99861883"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Majid Meghdadi","raw_affiliation_strings":["Department of Computer Engineering, University of Zanjan, Zanjan, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering, University of Zanjan, Zanjan, Iran","institution_ids":["https://openalex.org/I99861883"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5106838086"],"corresponding_institution_ids":["https://openalex.org/I55547365","https://openalex.org/I99861883"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.13047285,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"31","issue":"6","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11273","display_name":"Advanced Graph Neural Networks","score":0.9998000264167786,"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/T11273","display_name":"Advanced Graph Neural Networks","score":0.9998000264167786,"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":0.9997000098228455,"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":0.9950000047683716,"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":0.7597000002861023},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.5462999939918518},{"id":"https://openalex.org/keywords/bipartite-graph","display_name":"Bipartite graph","score":0.5306000113487244},{"id":"https://openalex.org/keywords/exploit","display_name":"Exploit","score":0.4975999891757965},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.4438000023365021},{"id":"https://openalex.org/keywords/negative-feedback","display_name":"Negative feedback","score":0.4422999918460846},{"id":"https://openalex.org/keywords/embedding","display_name":"Embedding","score":0.414900004863739},{"id":"https://openalex.org/keywords/matching","display_name":"Matching (statistics)","score":0.4034999907016754},{"id":"https://openalex.org/keywords/artificial-neural-network","display_name":"Artificial neural network","score":0.3758000135421753}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8438000082969666},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.7597000002861023},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.5462999939918518},{"id":"https://openalex.org/C197657726","wikidata":"https://www.wikidata.org/wiki/Q174733","display_name":"Bipartite graph","level":3,"score":0.5306000113487244},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.4975999891757965},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.49070000648498535},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4717000126838684},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.4438000023365021},{"id":"https://openalex.org/C93586867","wikidata":"https://www.wikidata.org/wiki/Q62527","display_name":"Negative feedback","level":3,"score":0.4422999918460846},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.439300000667572},{"id":"https://openalex.org/C41608201","wikidata":"https://www.wikidata.org/wiki/Q980509","display_name":"Embedding","level":2,"score":0.414900004863739},{"id":"https://openalex.org/C165064840","wikidata":"https://www.wikidata.org/wiki/Q1321061","display_name":"Matching (statistics)","level":2,"score":0.4034999907016754},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.3758000135421753},{"id":"https://openalex.org/C179717631","wikidata":"https://www.wikidata.org/wiki/Q2991667","display_name":"Multilayer perceptron","level":3,"score":0.3635999858379364},{"id":"https://openalex.org/C59404180","wikidata":"https://www.wikidata.org/wiki/Q17013334","display_name":"Feature learning","level":2,"score":0.357699990272522},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.35499998927116394},{"id":"https://openalex.org/C75564084","wikidata":"https://www.wikidata.org/wiki/Q5597085","display_name":"Graph embedding","level":3,"score":0.3382999897003174},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3366999924182892},{"id":"https://openalex.org/C62611344","wikidata":"https://www.wikidata.org/wiki/Q1062658","display_name":"Node (physics)","level":2,"score":0.325300008058548},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.31679999828338623},{"id":"https://openalex.org/C163339463","wikidata":"https://www.wikidata.org/wiki/Q484598","display_name":"CAPTCHA","level":2,"score":0.3149999976158142},{"id":"https://openalex.org/C86037889","wikidata":"https://www.wikidata.org/wiki/Q4330127","display_name":"Learning to rank","level":3,"score":0.3084999918937683},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.30790001153945923},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.30230000615119934},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.2865999937057495},{"id":"https://openalex.org/C108583219","wikidata":"https://www.wikidata.org/wiki/Q197536","display_name":"Deep learning","level":2,"score":0.26460000872612},{"id":"https://openalex.org/C61455927","wikidata":"https://www.wikidata.org/wiki/Q1030529","display_name":"Blossom algorithm","level":3,"score":0.25780001282691956},{"id":"https://openalex.org/C183115368","wikidata":"https://www.wikidata.org/wiki/Q856577","display_name":"Weighting","level":2,"score":0.25529998540878296},{"id":"https://openalex.org/C178489894","wikidata":"https://www.wikidata.org/wiki/Q8789","display_name":"Cryptography","level":2,"score":0.2533000111579895}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/s00530-025-01995-z","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00530-025-01995-z","pdf_url":null,"source":{"id":"https://openalex.org/S112262039","display_name":"Multimedia Systems","issn_l":"0942-4962","issn":["0942-4962","1432-1882"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Multimedia Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":51,"referenced_works":["https://openalex.org/W2033500845","https://openalex.org/W2054141820","https://openalex.org/W2748374161","https://openalex.org/W2788295351","https://openalex.org/W2798881875","https://openalex.org/W2807021761","https://openalex.org/W2887092413","https://openalex.org/W2907492528","https://openalex.org/W2914721378","https://openalex.org/W2945827670","https://openalex.org/W2963085847","https://openalex.org/W2966799427","https://openalex.org/W2972520532","https://openalex.org/W2973140148","https://openalex.org/W2997638284","https://openalex.org/W2998431760","https://openalex.org/W3035313290","https://openalex.org/W3045200674","https://openalex.org/W3093987685","https://openalex.org/W3094605801","https://openalex.org/W3100278010","https://openalex.org/W3100848837","https://openalex.org/W3102778384","https://openalex.org/W3153325943","https://openalex.org/W3169236624","https://openalex.org/W3175507592","https://openalex.org/W3176294187","https://openalex.org/W3208007380","https://openalex.org/W3217215940","https://openalex.org/W4206318305","https://openalex.org/W4206370688","https://openalex.org/W4284666445","https://openalex.org/W4288804669","https://openalex.org/W4306168996","https://openalex.org/W4315643352","https://openalex.org/W4315977496","https://openalex.org/W4361208353","https://openalex.org/W4375952695","https://openalex.org/W4384652088","https://openalex.org/W4385713972","https://openalex.org/W4391911781","https://openalex.org/W4394973476","https://openalex.org/W4396735686","https://openalex.org/W4399052872","https://openalex.org/W4400529579","https://openalex.org/W4400910114","https://openalex.org/W4401857147","https://openalex.org/W4402024164","https://openalex.org/W4404739543","https://openalex.org/W4406068291","https://openalex.org/W4409657523"],"related_works":[],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-06-13T06:13:01.061226","created_date":"2025-10-10T00:00:00"}