{"id":"https://openalex.org/W4386130960","doi":"https://doi.org/10.1016/j.engappai.2023.106842","title":"Measuring similarity based on user activeness in recommender systems to improve algorithm scalability","display_name":"Measuring similarity based on user activeness in recommender systems to improve algorithm scalability","publication_year":2023,"publication_date":"2023-08-24","ids":{"openalex":"https://openalex.org/W4386130960","doi":"https://doi.org/10.1016/j.engappai.2023.106842"},"language":"en","primary_location":{"id":"doi:10.1016/j.engappai.2023.106842","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.engappai.2023.106842","pdf_url":null,"source":{"id":"https://openalex.org/S900972176","display_name":"Engineering Applications of Artificial Intelligence","issn_l":"0952-1976","issn":["0952-1976","1873-6769"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Engineering Applications of Artificial Intelligence","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/A5000548595","display_name":"Jun Ai","orcid":"https://orcid.org/0000-0001-6650-3944"},"institutions":[{"id":"https://openalex.org/I148128674","display_name":"University of Shanghai for Science and Technology","ror":"https://ror.org/00ay9v204","country_code":"CN","type":"education","lineage":["https://openalex.org/I148128674"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jun Ai","raw_affiliation_strings":["School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China"],"raw_orcid":"https://orcid.org/0000-0001-6650-3944","affiliations":[{"raw_affiliation_string":"School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China","institution_ids":["https://openalex.org/I148128674"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021528141","display_name":"Yifang Cai","orcid":"https://orcid.org/0000-0001-5980-9769"},"institutions":[{"id":"https://openalex.org/I148128674","display_name":"University of Shanghai for Science and Technology","ror":"https://ror.org/00ay9v204","country_code":"CN","type":"education","lineage":["https://openalex.org/I148128674"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yifang Cai","raw_affiliation_strings":["School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China"],"raw_orcid":"https://orcid.org/0000-0001-5980-9769","affiliations":[{"raw_affiliation_string":"School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China","institution_ids":["https://openalex.org/I148128674"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060027762","display_name":"Zhan Su","orcid":"https://orcid.org/0000-0003-0277-837X"},"institutions":[{"id":"https://openalex.org/I148128674","display_name":"University of Shanghai for Science and Technology","ror":"https://ror.org/00ay9v204","country_code":"CN","type":"education","lineage":["https://openalex.org/I148128674"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Zhan Su","raw_affiliation_strings":["School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China","institution_ids":["https://openalex.org/I148128674"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071473857","display_name":"Dunlu Peng","orcid":"https://orcid.org/0000-0003-0223-5447"},"institutions":[{"id":"https://openalex.org/I148128674","display_name":"University of Shanghai for Science and Technology","ror":"https://ror.org/00ay9v204","country_code":"CN","type":"education","lineage":["https://openalex.org/I148128674"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Dunlu Peng","raw_affiliation_strings":["School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China","institution_ids":["https://openalex.org/I148128674"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101797559","display_name":"Fengyu Zhao","orcid":"https://orcid.org/0000-0002-4783-290X"},"institutions":[{"id":"https://openalex.org/I2801919588","display_name":"Shanghai Library","ror":"https://ror.org/022d5rd48","country_code":"CN","type":"archive","lineage":["https://openalex.org/I2801919588"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fengyu Zhao","raw_affiliation_strings":["Shanghai Publishing and Printing College, Shanghai, 200093, PR China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Shanghai Publishing and Printing College, Shanghai, 200093, PR China","institution_ids":["https://openalex.org/I2801919588"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5000548595","https://openalex.org/A5060027762"],"corresponding_institution_ids":["https://openalex.org/I148128674"],"apc_list":{"value":3170,"currency":"USD","value_usd":3170},"apc_paid":null,"fwci":3.2882,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.93195571,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":"126","issue":null,"first_page":"106842","last_page":"106842"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":1.0,"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":1.0,"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/T12101","display_name":"Advanced Bandit Algorithms Research","score":0.9876000285148621,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10664","display_name":"Sentiment Analysis and Opinion Mining","score":0.9674000144004822,"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":0.9057341814041138},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.8977958559989929},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.8584004640579224},{"id":"https://openalex.org/keywords/similarity","display_name":"Similarity (geometry)","score":0.8362634181976318},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.7867639660835266},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.5255148410797119},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.4711885452270508},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4474062919616699},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.43285781145095825},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.3890189528465271},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.24680587649345398},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.17529582977294922}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.9057341814041138},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.8977958559989929},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.8584004640579224},{"id":"https://openalex.org/C103278499","wikidata":"https://www.wikidata.org/wiki/Q254465","display_name":"Similarity (geometry)","level":3,"score":0.8362634181976318},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.7867639660835266},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.5255148410797119},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.4711885452270508},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4474062919616699},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.43285781145095825},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.3890189528465271},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.24680587649345398},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.17529582977294922},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/j.engappai.2023.106842","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.engappai.2023.106842","pdf_url":null,"source":{"id":"https://openalex.org/S900972176","display_name":"Engineering Applications of Artificial Intelligence","issn_l":"0952-1976","issn":["0952-1976","1873-6769"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Engineering Applications of Artificial Intelligence","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G7194769493","display_name":null,"funder_award_id":"61803264","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335581","display_name":"Young Scientists Fund","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":39,"referenced_works":["https://openalex.org/W1551121583","https://openalex.org/W1895995141","https://openalex.org/W1979104937","https://openalex.org/W2005156851","https://openalex.org/W2007444087","https://openalex.org/W2025605741","https://openalex.org/W2082333502","https://openalex.org/W2092428209","https://openalex.org/W2111778013","https://openalex.org/W2171960770","https://openalex.org/W2209721355","https://openalex.org/W2266058821","https://openalex.org/W2514091133","https://openalex.org/W2587040670","https://openalex.org/W2769076196","https://openalex.org/W2907935579","https://openalex.org/W2909127866","https://openalex.org/W2912309376","https://openalex.org/W2914976286","https://openalex.org/W2940457400","https://openalex.org/W2945038287","https://openalex.org/W2949702171","https://openalex.org/W2991098041","https://openalex.org/W3023892310","https://openalex.org/W3033193149","https://openalex.org/W3046888520","https://openalex.org/W3063395743","https://openalex.org/W3082550533","https://openalex.org/W3111648316","https://openalex.org/W3126805253","https://openalex.org/W3128100016","https://openalex.org/W3130068920","https://openalex.org/W3187561073","https://openalex.org/W4226280022","https://openalex.org/W4226342617","https://openalex.org/W4288442277","https://openalex.org/W4296591816","https://openalex.org/W6610567130","https://openalex.org/W6747526208"],"related_works":["https://openalex.org/W2772628444","https://openalex.org/W2735929803","https://openalex.org/W4220714703","https://openalex.org/W1484355083","https://openalex.org/W3008845055","https://openalex.org/W2098758514","https://openalex.org/W4376854386","https://openalex.org/W2202724490","https://openalex.org/W3014393615","https://openalex.org/W2508671622"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":4}],"updated_date":"2026-06-15T08:34:33.830935","created_date":"2025-10-10T00:00:00"}
