{"id":"https://openalex.org/W4210361916","doi":"https://doi.org/10.1007/s00779-021-01646-w","title":"An efficient and secure recommendation system based on federated matrix factorization in digital economy","display_name":"An efficient and secure recommendation system based on federated matrix factorization in digital economy","publication_year":2022,"publication_date":"2022-01-30","ids":{"openalex":"https://openalex.org/W4210361916","doi":"https://doi.org/10.1007/s00779-021-01646-w"},"language":"en","primary_location":{"id":"doi:10.1007/s00779-021-01646-w","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00779-021-01646-w","pdf_url":null,"source":{"id":"https://openalex.org/S58126648","display_name":"Personal and Ubiquitous Computing","issn_l":"1617-4909","issn":["1617-4909","1617-4917"],"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":"Personal and Ubiquitous Computing","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/A5118900088","display_name":"Hongyu Chen","orcid":"https://orcid.org/0009-0006-5962-889X"},"institutions":[{"id":"https://openalex.org/I158842170","display_name":"Chongqing University","ror":"https://ror.org/023rhb549","country_code":"CN","type":"education","lineage":["https://openalex.org/I158842170"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Hongyu Chen","raw_affiliation_strings":["School of Big Data & Software Engineering, Chongqing University, Chongqing, 400044, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Big Data & Software Engineering, Chongqing University, Chongqing, 400044, China","institution_ids":["https://openalex.org/I158842170"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090154102","display_name":"Chunlei Fu","orcid":"https://orcid.org/0000-0002-2690-0475"},"institutions":[{"id":"https://openalex.org/I158842170","display_name":"Chongqing University","ror":"https://ror.org/023rhb549","country_code":"CN","type":"education","lineage":["https://openalex.org/I158842170"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chunlei Fu","raw_affiliation_strings":["School of Big Data & Software Engineering, Chongqing University, Chongqing, 400044, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Big Data & Software Engineering, Chongqing University, Chongqing, 400044, China","institution_ids":["https://openalex.org/I158842170"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5007408033","display_name":"Chunqiang Hu","orcid":"https://orcid.org/0000-0001-5825-2241"},"institutions":[{"id":"https://openalex.org/I158842170","display_name":"Chongqing University","ror":"https://ror.org/023rhb549","country_code":"CN","type":"education","lineage":["https://openalex.org/I158842170"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chunqiang Hu","raw_affiliation_strings":["School of Big Data & Software Engineering, Chongqing University, Chongqing, 400044, China"],"raw_orcid":"https://orcid.org/0000-0001-5825-2241","affiliations":[{"raw_affiliation_string":"School of Big Data & Software Engineering, Chongqing University, Chongqing, 400044, China","institution_ids":["https://openalex.org/I158842170"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5118900088"],"corresponding_institution_ids":["https://openalex.org/I158842170"],"apc_list":{"value":2490,"currency":"EUR","value_usd":3090},"apc_paid":null,"fwci":0.9711,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.78847023,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"27","issue":"4","first_page":"1595","last_page":"1606"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":0.9988999962806702,"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/T10764","display_name":"Privacy-Preserving Technologies in Data","score":0.9988999962806702,"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":0.9983000159263611,"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/T11612","display_name":"Stochastic Gradient Optimization Techniques","score":0.9853000044822693,"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":0.8332090377807617},{"id":"https://openalex.org/keywords/upload","display_name":"Upload","score":0.799940824508667},{"id":"https://openalex.org/keywords/server","display_name":"Server","score":0.623261570930481},{"id":"https://openalex.org/keywords/process","display_name":"Process (computing)","score":0.5976695418357849},{"id":"https://openalex.org/keywords/matrix-decomposition","display_name":"Matrix decomposition","score":0.578879714012146},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.5578495264053345},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.5316354036331177},{"id":"https://openalex.org/keywords/factorization","display_name":"Factorization","score":0.476950079202652},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.34442126750946045},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.2550835609436035},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.20045021176338196},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.16742369532585144},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.15822184085845947},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.1325347125530243}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8332090377807617},{"id":"https://openalex.org/C71901391","wikidata":"https://www.wikidata.org/wiki/Q7126699","display_name":"Upload","level":2,"score":0.799940824508667},{"id":"https://openalex.org/C93996380","wikidata":"https://www.wikidata.org/wiki/Q44127","display_name":"Server","level":2,"score":0.623261570930481},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.5976695418357849},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.578879714012146},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.5578495264053345},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.5316354036331177},{"id":"https://openalex.org/C187834632","wikidata":"https://www.wikidata.org/wiki/Q188804","display_name":"Factorization","level":2,"score":0.476950079202652},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.34442126750946045},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.2550835609436035},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.20045021176338196},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.16742369532585144},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.15822184085845947},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.1325347125530243},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"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/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C158693339","wikidata":"https://www.wikidata.org/wiki/Q190524","display_name":"Eigenvalues and eigenvectors","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/s00779-021-01646-w","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00779-021-01646-w","pdf_url":null,"source":{"id":"https://openalex.org/S58126648","display_name":"Personal and Ubiquitous Computing","issn_l":"1617-4909","issn":["1617-4909","1617-4917"],"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":"Personal and Ubiquitous Computing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Peace, Justice and strong institutions","id":"https://metadata.un.org/sdg/16","score":0.46000000834465027}],"awards":[{"id":"https://openalex.org/G2304842078","display_name":null,"funder_award_id":"61932006","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4065243520","display_name":null,"funder_award_id":"cstc2018jcyjA3041","funder_id":"https://openalex.org/F4320323172","funder_display_name":"Natural Science Foundation of Chongqing"},{"id":"https://openalex.org/G4501441032","display_name":null,"funder_award_id":"62072065","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5524103904","display_name":null,"funder_award_id":"cx2020004","funder_id":"https://openalex.org/F4320327835","funder_display_name":"Venture and Innovation Support Program for Chongqing Overseas Returnees"},{"id":"https://openalex.org/G5838160925","display_name":null,"funder_award_id":"cstc2019jscx-mbdxX0044","funder_id":"https://openalex.org/F4320335660","funder_display_name":"Key Laboratory on Development and Application of Rural Renewable Energy"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320323172","display_name":"Natural Science Foundation of Chongqing","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320327835","display_name":"Venture and Innovation Support Program for Chongqing Overseas Returnees","ror":null},{"id":"https://openalex.org/F4320335660","display_name":"Key Laboratory on Development and Application of Rural Renewable Energy","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":39,"referenced_works":["https://openalex.org/W114517082","https://openalex.org/W1530276735","https://openalex.org/W2022097286","https://openalex.org/W2040367556","https://openalex.org/W2054141820","https://openalex.org/W2083287929","https://openalex.org/W2083973186","https://openalex.org/W2087196505","https://openalex.org/W2096210558","https://openalex.org/W2096235681","https://openalex.org/W2099739670","https://openalex.org/W2101687784","https://openalex.org/W2125723038","https://openalex.org/W2141420453","https://openalex.org/W2145360759","https://openalex.org/W2152924492","https://openalex.org/W2156186849","https://openalex.org/W2159786810","https://openalex.org/W2164284862","https://openalex.org/W2167094273","https://openalex.org/W2177209050","https://openalex.org/W2406176316","https://openalex.org/W2533696134","https://openalex.org/W2767079719","https://openalex.org/W2770420551","https://openalex.org/W2792952009","https://openalex.org/W2804915563","https://openalex.org/W2912213068","https://openalex.org/W2971524999","https://openalex.org/W2990000708","https://openalex.org/W3028922375","https://openalex.org/W3037885237","https://openalex.org/W3047789363","https://openalex.org/W3080710500","https://openalex.org/W3081273427","https://openalex.org/W3136734347","https://openalex.org/W4236765470","https://openalex.org/W4281686206","https://openalex.org/W6771536673"],"related_works":["https://openalex.org/W2944823289","https://openalex.org/W4390273403","https://openalex.org/W3037018281","https://openalex.org/W4386781444","https://openalex.org/W2070735207","https://openalex.org/W2963185427","https://openalex.org/W2065296176","https://openalex.org/W2342498029","https://openalex.org/W1973739845","https://openalex.org/W119752240"],"abstract_inverted_index":null,"counts_by_year":[{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}