{"id":"https://openalex.org/W2100675936","doi":"https://doi.org/10.1007/11548706_28","title":"Rough Set Approach to Sunspot Classification Problem","display_name":"Rough Set Approach to Sunspot Classification Problem","publication_year":2005,"publication_date":"2005-01-01","ids":{"openalex":"https://openalex.org/W2100675936","doi":"https://doi.org/10.1007/11548706_28","mag":"2100675936"},"language":"en","primary_location":{"id":"doi:10.1007/11548706_28","is_oa":false,"landing_page_url":"https://doi.org/10.1007/11548706_28","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/A5047030897","display_name":"Sinh Hoa Nguyen","orcid":"https://orcid.org/0000-0003-1184-6223"},"institutions":[{"id":"https://openalex.org/I3017851245","display_name":"Polish-Japanese Academy of Information Technology","ror":"https://ror.org/01v542j61","country_code":"PL","type":"education","lineage":["https://openalex.org/I3017851245"]}],"countries":["PL"],"is_corresponding":true,"raw_author_name":"Sinh Hoa Nguyen","raw_affiliation_strings":["Polish-Japanese Institute of Information Technology, Koszykowa 86, 02-008, Warsaw, Poland"],"affiliations":[{"raw_affiliation_string":"Polish-Japanese Institute of Information Technology, Koszykowa 86, 02-008, Warsaw, Poland","institution_ids":["https://openalex.org/I3017851245"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101718798","display_name":"Trung Th\u00e0nh Nguy\u1ec5n","orcid":"https://orcid.org/0000-0001-8976-2922"},"institutions":[{"id":"https://openalex.org/I51601045","display_name":"University of Bath","ror":"https://ror.org/002h8g185","country_code":"GB","type":"education","lineage":["https://openalex.org/I51601045"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Trung Thanh Nguyen","raw_affiliation_strings":["Department of Computer Science, University of Bath, Bath, BA2 7AY, United Kingdom"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Bath, Bath, BA2 7AY, United Kingdom","institution_ids":["https://openalex.org/I51601045"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044883724","display_name":"Hung Son Nguyen","orcid":"https://orcid.org/0000-0002-3236-5456"},"institutions":[{"id":"https://openalex.org/I4210137370","display_name":"Institute of Mathematics","ror":"https://ror.org/04hrrh248","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210137370","https://openalex.org/I99542240"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Hung Son Nguyen","raw_affiliation_strings":["Institute of Mathematics, Warsaw University, Banacha 2, 02-097, Warsaw, Poland"],"affiliations":[{"raw_affiliation_string":"Institute of Mathematics, Warsaw University, Banacha 2, 02-097, Warsaw, Poland","institution_ids":["https://openalex.org/I4210137370"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5047030897"],"corresponding_institution_ids":["https://openalex.org/I3017851245"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":3.7601,"has_fulltext":false,"cited_by_count":25,"citation_normalized_percentile":{"value":0.94593973,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"263","last_page":"272"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T14319","display_name":"Currency Recognition and Detection","score":0.9302999973297119,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T14319","display_name":"Currency Recognition and Detection","score":0.9302999973297119,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T11326","display_name":"Stock Market Forecasting Methods","score":0.9093000292778015,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7457497119903564},{"id":"https://openalex.org/keywords/rough-set","display_name":"Rough set","score":0.7073111534118652},{"id":"https://openalex.org/keywords/sunspot","display_name":"Sunspot","score":0.6738859415054321},{"id":"https://openalex.org/keywords/ontology","display_name":"Ontology","score":0.6125269532203674},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.542375922203064},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5181176066398621},{"id":"https://openalex.org/keywords/domain","display_name":"Domain (mathematical analysis)","score":0.4989166259765625},{"id":"https://openalex.org/keywords/decision-tree","display_name":"Decision tree","score":0.46739017963409424},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.4309159219264984},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.39139866828918457},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1592443287372589}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7457497119903564},{"id":"https://openalex.org/C111012933","wikidata":"https://www.wikidata.org/wiki/Q3137210","display_name":"Rough set","level":2,"score":0.7073111534118652},{"id":"https://openalex.org/C197370839","wikidata":"https://www.wikidata.org/wiki/Q6582994","display_name":"Sunspot","level":3,"score":0.6738859415054321},{"id":"https://openalex.org/C25810664","wikidata":"https://www.wikidata.org/wiki/Q44325","display_name":"Ontology","level":2,"score":0.6125269532203674},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.542375922203064},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5181176066398621},{"id":"https://openalex.org/C36503486","wikidata":"https://www.wikidata.org/wiki/Q11235244","display_name":"Domain (mathematical analysis)","level":2,"score":0.4989166259765625},{"id":"https://openalex.org/C84525736","wikidata":"https://www.wikidata.org/wiki/Q831366","display_name":"Decision tree","level":2,"score":0.46739017963409424},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.4309159219264984},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.39139866828918457},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1592443287372589},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"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/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1007/11548706_28","is_oa":false,"landing_page_url":"https://doi.org/10.1007/11548706_28","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"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.497.6463","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.497.6463","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://logic.mimuw.edu.pl/publikacje/36420263.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W150293210","https://openalex.org/W1479892260","https://openalex.org/W1494340393","https://openalex.org/W1499870548","https://openalex.org/W1504805052","https://openalex.org/W1570448133","https://openalex.org/W1589901344","https://openalex.org/W1992419399","https://openalex.org/W2006303459","https://openalex.org/W2010544740","https://openalex.org/W2123504579","https://openalex.org/W2149706766","https://openalex.org/W2271862924","https://openalex.org/W2298026765","https://openalex.org/W2466512847","https://openalex.org/W2500062327","https://openalex.org/W2523784354","https://openalex.org/W2601076063","https://openalex.org/W2740386510","https://openalex.org/W3139831614","https://openalex.org/W3177773949","https://openalex.org/W4300068885"],"related_works":["https://openalex.org/W2392963705","https://openalex.org/W2107349454","https://openalex.org/W2940669800","https://openalex.org/W2382278777","https://openalex.org/W2167403502","https://openalex.org/W2353240132","https://openalex.org/W1587347718","https://openalex.org/W2375932290","https://openalex.org/W1964260090","https://openalex.org/W1486178390"],"abstract_inverted_index":null,"counts_by_year":[{"year":2017,"cited_by_count":3},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":3},{"year":2012,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}