{"id":"https://openalex.org/W1484428591","doi":"https://doi.org/10.1007/11425274_22","title":"Subsystem Based Generalizations of Rough Set Approximations","display_name":"Subsystem Based Generalizations of Rough Set Approximations","publication_year":2005,"publication_date":"2005-01-01","ids":{"openalex":"https://openalex.org/W1484428591","doi":"https://doi.org/10.1007/11425274_22","mag":"1484428591"},"language":"en","primary_location":{"id":"doi:10.1007/11425274_22","is_oa":false,"landing_page_url":"https://doi.org/10.1007/11425274_22","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","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/A5063696855","display_name":"Yiyu Yao","orcid":"https://orcid.org/0000-0001-6502-6226"},"institutions":[{"id":"https://openalex.org/I194028371","display_name":"University of Regina","ror":"https://ror.org/03dzc0485","country_code":"CA","type":"education","lineage":["https://openalex.org/I194028371"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"Yiyu Yao","raw_affiliation_strings":["Department of Computer Science, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada","institution_ids":["https://openalex.org/I194028371"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5020584849","display_name":"Yaohua Chen","orcid":"https://orcid.org/0000-0003-1778-1790"},"institutions":[{"id":"https://openalex.org/I194028371","display_name":"University of Regina","ror":"https://ror.org/03dzc0485","country_code":"CA","type":"education","lineage":["https://openalex.org/I194028371"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Yaohua Chen","raw_affiliation_strings":["Department of Computer Science, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada","institution_ids":["https://openalex.org/I194028371"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5063696855"],"corresponding_institution_ids":["https://openalex.org/I194028371"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":3.0649,"has_fulltext":false,"cited_by_count":33,"citation_normalized_percentile":{"value":0.91285016,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"210","last_page":"218"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11063","display_name":"Rough Sets and Fuzzy Logic","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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/T11063","display_name":"Rough Sets and Fuzzy Logic","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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/T11245","display_name":"Advanced Numerical Analysis Techniques","score":0.9409000277519226,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/equivalence-relation","display_name":"Equivalence relation","score":0.8392547965049744},{"id":"https://openalex.org/keywords/binary-relation","display_name":"Binary relation","score":0.8094584345817566},{"id":"https://openalex.org/keywords/rough-set","display_name":"Rough set","score":0.8049229383468628},{"id":"https://openalex.org/keywords/binary-number","display_name":"Binary number","score":0.6592534780502319},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6290166974067688},{"id":"https://openalex.org/keywords/approximations-of-\u03c0","display_name":"Approximations of \u03c0","score":0.6127275228500366},{"id":"https://openalex.org/keywords/relation","display_name":"Relation (database)","score":0.596748948097229},{"id":"https://openalex.org/keywords/equivalence","display_name":"Equivalence (formal languages)","score":0.5859081745147705},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.5635400414466858},{"id":"https://openalex.org/keywords/construct","display_name":"Construct (python library)","score":0.5404677391052246},{"id":"https://openalex.org/keywords/binary-operation","display_name":"Binary operation","score":0.43065422773361206},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.4199887216091156},{"id":"https://openalex.org/keywords/equivalence-class","display_name":"Equivalence class (music)","score":0.4166881740093231},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3915836215019226},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.3879867196083069},{"id":"https://openalex.org/keywords/applied-mathematics","display_name":"Applied mathematics","score":0.3528990149497986},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3141722083091736},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.31358787417411804},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.22010073065757751},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.19110777974128723},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.09792697429656982},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.06453147530555725}],"concepts":[{"id":"https://openalex.org/C156103551","wikidata":"https://www.wikidata.org/wiki/Q130998","display_name":"Equivalence relation","level":2,"score":0.8392547965049744},{"id":"https://openalex.org/C65180967","wikidata":"https://www.wikidata.org/wiki/Q130901","display_name":"Binary relation","level":2,"score":0.8094584345817566},{"id":"https://openalex.org/C111012933","wikidata":"https://www.wikidata.org/wiki/Q3137210","display_name":"Rough set","level":2,"score":0.8049229383468628},{"id":"https://openalex.org/C48372109","wikidata":"https://www.wikidata.org/wiki/Q3913","display_name":"Binary number","level":2,"score":0.6592534780502319},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6290166974067688},{"id":"https://openalex.org/C193386753","wikidata":"https://www.wikidata.org/wiki/Q1130396","display_name":"Approximations of \u03c0","level":2,"score":0.6127275228500366},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.596748948097229},{"id":"https://openalex.org/C2780069185","wikidata":"https://www.wikidata.org/wiki/Q7977945","display_name":"Equivalence (formal languages)","level":2,"score":0.5859081745147705},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5635400414466858},{"id":"https://openalex.org/C2780801425","wikidata":"https://www.wikidata.org/wiki/Q5164392","display_name":"Construct (python library)","level":2,"score":0.5404677391052246},{"id":"https://openalex.org/C185529760","wikidata":"https://www.wikidata.org/wiki/Q164307","display_name":"Binary operation","level":2,"score":0.43065422773361206},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.4199887216091156},{"id":"https://openalex.org/C2777044963","wikidata":"https://www.wikidata.org/wiki/Q5384707","display_name":"Equivalence class (music)","level":2,"score":0.4166881740093231},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3915836215019226},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.3879867196083069},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.3528990149497986},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3141722083091736},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.31358787417411804},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.22010073065757751},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.19110777974128723},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.09792697429656982},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.06453147530555725}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/11425274_22","is_oa":false,"landing_page_url":"https://doi.org/10.1007/11425274_22","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":23,"referenced_works":["https://openalex.org/W639459029","https://openalex.org/W1482209170","https://openalex.org/W1519041577","https://openalex.org/W1536681184","https://openalex.org/W1557923305","https://openalex.org/W1575188431","https://openalex.org/W1595713163","https://openalex.org/W1987251161","https://openalex.org/W2002367458","https://openalex.org/W2003571395","https://openalex.org/W2023441160","https://openalex.org/W2036999870","https://openalex.org/W2078975878","https://openalex.org/W2298168480","https://openalex.org/W2500062327","https://openalex.org/W2506703326","https://openalex.org/W2522688877","https://openalex.org/W2784007560","https://openalex.org/W2990482619","https://openalex.org/W3127823229","https://openalex.org/W4232953319","https://openalex.org/W4255833381","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2378405769","https://openalex.org/W4247436880","https://openalex.org/W2752896058","https://openalex.org/W2062503615","https://openalex.org/W1503929941","https://openalex.org/W2064989302","https://openalex.org/W2895616265","https://openalex.org/W3021469126","https://openalex.org/W1598356149","https://openalex.org/W2553317149"],"abstract_inverted_index":null,"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":2},{"year":2018,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}