{"id":"https://openalex.org/W7128709888","doi":"https://doi.org/10.1007/s11704-025-50348-6","title":"OCACO: an operator-level cardinality and cost joint estimator","display_name":"OCACO: an operator-level cardinality and cost joint estimator","publication_year":2026,"publication_date":"2026-02-12","ids":{"openalex":"https://openalex.org/W7128709888","doi":"https://doi.org/10.1007/s11704-025-50348-6"},"language":"en","primary_location":{"id":"doi:10.1007/s11704-025-50348-6","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s11704-025-50348-6","pdf_url":null,"source":{"id":"https://openalex.org/S4210231404","display_name":"Frontiers of Computer Science","issn_l":"2095-2228","issn":["2095-2228","2095-2236"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311889","host_organization_name":"Higher Education Press","host_organization_lineage":["https://openalex.org/P4310311889"],"host_organization_lineage_names":["Higher Education Press"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers of Computer Science","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/A5125759426","display_name":"Tao Ji","orcid":null},"institutions":[{"id":"https://openalex.org/I78988378","display_name":"Renmin University of China","ror":"https://ror.org/041pakw92","country_code":"CN","type":"education","lineage":["https://openalex.org/I78988378"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tao Ji","raw_affiliation_strings":["Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","School of Information, Renmin University of China, Beijing, 100872, China"],"affiliations":[{"raw_affiliation_string":"Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","institution_ids":[]},{"raw_affiliation_string":"School of Information, Renmin University of China, Beijing, 100872, China","institution_ids":["https://openalex.org/I78988378"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5107146498","display_name":"Lei Li","orcid":null},"institutions":[{"id":"https://openalex.org/I78988378","display_name":"Renmin University of China","ror":"https://ror.org/041pakw92","country_code":"CN","type":"education","lineage":["https://openalex.org/I78988378"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Haoyang Li","raw_affiliation_strings":["Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","School of Information, Renmin University of China, Beijing, 100872, China"],"affiliations":[{"raw_affiliation_string":"Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","institution_ids":[]},{"raw_affiliation_string":"School of Information, Renmin University of China, Beijing, 100872, China","institution_ids":["https://openalex.org/I78988378"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017721496","display_name":"Kai Zhong","orcid":"https://orcid.org/0000-0002-9993-6954"},"institutions":[{"id":"https://openalex.org/I78988378","display_name":"Renmin University of China","ror":"https://ror.org/041pakw92","country_code":"CN","type":"education","lineage":["https://openalex.org/I78988378"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Kai Zhong","raw_affiliation_strings":["Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","School of Information, Renmin University of China, Beijing, 100872, China"],"affiliations":[{"raw_affiliation_string":"Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","institution_ids":[]},{"raw_affiliation_string":"School of Information, Renmin University of China, Beijing, 100872, China","institution_ids":["https://openalex.org/I78988378"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5125733788","display_name":"Jing Zhang","orcid":null},"institutions":[{"id":"https://openalex.org/I78988378","display_name":"Renmin University of China","ror":"https://ror.org/041pakw92","country_code":"CN","type":"education","lineage":["https://openalex.org/I78988378"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jing Zhang","raw_affiliation_strings":["Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","School of Information, Renmin University of China, Beijing, 100872, China"],"affiliations":[{"raw_affiliation_string":"Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","institution_ids":[]},{"raw_affiliation_string":"School of Information, Renmin University of China, Beijing, 100872, China","institution_ids":["https://openalex.org/I78988378"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100619238","display_name":"Cuiping Li","orcid":"https://orcid.org/0000-0003-0433-0966"},"institutions":[{"id":"https://openalex.org/I78988378","display_name":"Renmin University of China","ror":"https://ror.org/041pakw92","country_code":"CN","type":"education","lineage":["https://openalex.org/I78988378"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Cuiping Li","raw_affiliation_strings":["Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","School of Information, Renmin University of China, Beijing, 100872, China"],"affiliations":[{"raw_affiliation_string":"Key Laboratory of Data Engineering and Knowledge Engineering, Ministry of Education, Beijing, 100872, China","institution_ids":[]},{"raw_affiliation_string":"School of Information, Renmin University of China, Beijing, 100872, China","institution_ids":["https://openalex.org/I78988378"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108049584","display_name":"Hong Chen","orcid":"https://orcid.org/0000-0003-3198-9774"},"institutions":[{"id":"https://openalex.org/I4210094876","display_name":"Ministry of Education","ror":"https://ror.org/00q919b81","country_code":"SA","type":"government","lineage":["https://openalex.org/I4210094876"]},{"id":"https://openalex.org/I78988378","display_name":"Renmin University of China","ror":"https://ror.org/041pakw92","country_code":"CN","type":"education","lineage":["https://openalex.org/I78988378"]}],"countries":["CN","SA"],"is_corresponding":false,"raw_author_name":"Hong Chen","raw_affiliation_strings":["Engineering Research Center of Database and Business Intelligence, Ministry of Education, Beijing, 100872, China","School of Information, Renmin University of China, Beijing, 100872, China"],"affiliations":[{"raw_affiliation_string":"Engineering Research Center of Database and Business Intelligence, Ministry of Education, Beijing, 100872, China","institution_ids":["https://openalex.org/I4210094876"]},{"raw_affiliation_string":"School of Information, Renmin University of China, Beijing, 100872, China","institution_ids":["https://openalex.org/I78988378"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5100619238"],"corresponding_institution_ids":["https://openalex.org/I78988378"],"apc_list":{"value":2290,"currency":"EUR","value_usd":2890},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.49021284,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"20","issue":"9","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.6467000246047974,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T10317","display_name":"Advanced Database Systems and Queries","score":0.6467000246047974,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T11719","display_name":"Data Quality and Management","score":0.07000000029802322,"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/T10101","display_name":"Cloud Computing and Resource Management","score":0.0502999983727932,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/leverage","display_name":"Leverage (statistics)","score":0.677299976348877},{"id":"https://openalex.org/keywords/cardinality","display_name":"Cardinality (data modeling)","score":0.6559000015258789},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.5394999980926514},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.44339999556541443},{"id":"https://openalex.org/keywords/sql","display_name":"SQL","score":0.4300000071525574},{"id":"https://openalex.org/keywords/generalization","display_name":"Generalization","score":0.3528999984264374},{"id":"https://openalex.org/keywords/operator","display_name":"Operator (biology)","score":0.311599999666214}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8471999764442444},{"id":"https://openalex.org/C153083717","wikidata":"https://www.wikidata.org/wiki/Q6535263","display_name":"Leverage (statistics)","level":2,"score":0.677299976348877},{"id":"https://openalex.org/C87117476","wikidata":"https://www.wikidata.org/wiki/Q362383","display_name":"Cardinality (data modeling)","level":2,"score":0.6559000015258789},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.5394999980926514},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.44339999556541443},{"id":"https://openalex.org/C510870499","wikidata":"https://www.wikidata.org/wiki/Q47607","display_name":"SQL","level":2,"score":0.4300000071525574},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.4284000098705292},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.38850000500679016},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.373199999332428},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.35670000314712524},{"id":"https://openalex.org/C177148314","wikidata":"https://www.wikidata.org/wiki/Q170084","display_name":"Generalization","level":2,"score":0.3528999984264374},{"id":"https://openalex.org/C17020691","wikidata":"https://www.wikidata.org/wiki/Q139677","display_name":"Operator (biology)","level":5,"score":0.311599999666214},{"id":"https://openalex.org/C93983250","wikidata":"https://www.wikidata.org/wiki/Q795053","display_name":"Cost estimate","level":2,"score":0.29919999837875366},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.295199990272522},{"id":"https://openalex.org/C207390915","wikidata":"https://www.wikidata.org/wiki/Q1230525","display_name":"Divergence (linguistics)","level":2,"score":0.2849000096321106},{"id":"https://openalex.org/C14036430","wikidata":"https://www.wikidata.org/wiki/Q3736076","display_name":"Function (biology)","level":2,"score":0.2838999927043915},{"id":"https://openalex.org/C152139883","wikidata":"https://www.wikidata.org/wiki/Q252973","display_name":"Mutual information","level":2,"score":0.28189998865127563},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2750999927520752},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.27459999918937683},{"id":"https://openalex.org/C176217482","wikidata":"https://www.wikidata.org/wiki/Q860554","display_name":"Metric (unit)","level":2,"score":0.2743000090122223},{"id":"https://openalex.org/C103278499","wikidata":"https://www.wikidata.org/wiki/Q254465","display_name":"Similarity (geometry)","level":3,"score":0.27410000562667847},{"id":"https://openalex.org/C171752962","wikidata":"https://www.wikidata.org/wiki/Q255166","display_name":"Kullback\u2013Leibler divergence","level":2,"score":0.2500999867916107}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/s11704-025-50348-6","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s11704-025-50348-6","pdf_url":null,"source":{"id":"https://openalex.org/S4210231404","display_name":"Frontiers of Computer Science","issn_l":"2095-2228","issn":["2095-2228","2095-2236"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311889","host_organization_name":"Higher Education Press","host_organization_lineage":["https://openalex.org/P4310311889"],"host_organization_lineage_names":["Higher Education Press"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers of Computer Science","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":29,"referenced_works":["https://openalex.org/W2035675039","https://openalex.org/W2123083497","https://openalex.org/W2132823934","https://openalex.org/W2153329411","https://openalex.org/W2396309311","https://openalex.org/W2906910993","https://openalex.org/W2911464154","https://openalex.org/W2955798121","https://openalex.org/W2970148517","https://openalex.org/W2991530444","https://openalex.org/W2998249308","https://openalex.org/W3013555795","https://openalex.org/W3097225903","https://openalex.org/W3111141572","https://openalex.org/W3129744650","https://openalex.org/W3168288096","https://openalex.org/W3176153696","https://openalex.org/W3207801254","https://openalex.org/W4206830372","https://openalex.org/W4226086155","https://openalex.org/W4281724148","https://openalex.org/W4282570649","https://openalex.org/W4283326127","https://openalex.org/W4313138291","https://openalex.org/W4366502978","https://openalex.org/W4387559950","https://openalex.org/W4392454229","https://openalex.org/W4393180046","https://openalex.org/W4395456750"],"related_works":[],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-02-14T06:23:00.392402","created_date":"2026-02-13T00:00:00"}