{"id":"https://openalex.org/W1557065552","doi":"https://doi.org/10.1016/b978-0-08-050684-5.50013-6","title":"Variable Default Hierarchy Separation in a Classifier System","display_name":"Variable Default Hierarchy Separation in a Classifier System","publication_year":1991,"publication_date":"1991-01-01","ids":{"openalex":"https://openalex.org/W1557065552","doi":"https://doi.org/10.1016/b978-0-08-050684-5.50013-6","mag":"1557065552"},"language":"en","primary_location":{"id":"doi:10.1016/b978-0-08-050684-5.50013-6","is_oa":false,"landing_page_url":"https://doi.org/10.1016/b978-0-08-050684-5.50013-6","pdf_url":null,"source":{"id":"https://openalex.org/S4210206197","display_name":"Foundations of genetic algorithms","issn_l":"1081-6593","issn":["1081-6593"],"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Foundations of Genetic Algorithms","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/A5102000070","display_name":"Robert E. Smith","orcid":"https://orcid.org/0000-0003-4948-7174"},"institutions":[{"id":"https://openalex.org/I157725225","display_name":"University of Illinois Urbana-Champaign","ror":"https://ror.org/047426m28","country_code":"US","type":"education","lineage":["https://openalex.org/I157725225"]},{"id":"https://openalex.org/I17301866","display_name":"University of Alabama","ror":"https://ror.org/03xrrjk67","country_code":"US","type":"education","lineage":["https://openalex.org/I17301866"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Robert E. Smith","raw_affiliation_strings":["University of Alabama, Department of Engineering, Tuscaloosa, Alabama 35487","University of Illinois, Department of General Engineering, Urbana, Illinois 61801"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Alabama, Department of Engineering, Tuscaloosa, Alabama 35487","institution_ids":["https://openalex.org/I17301866"]},{"raw_affiliation_string":"University of Illinois, Department of General Engineering, Urbana, Illinois 61801","institution_ids":["https://openalex.org/I157725225"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110057218","display_name":"David E. Goldberg","orcid":null},"institutions":[{"id":"https://openalex.org/I157725225","display_name":"University of Illinois Urbana-Champaign","ror":"https://ror.org/047426m28","country_code":"US","type":"education","lineage":["https://openalex.org/I157725225"]},{"id":"https://openalex.org/I17301866","display_name":"University of Alabama","ror":"https://ror.org/03xrrjk67","country_code":"US","type":"education","lineage":["https://openalex.org/I17301866"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"David E. Goldberg","raw_affiliation_strings":["University of Alabama, Department of Engineering, Tuscaloosa, Alabama 35487","University of Illinois, Department of General Engineering, Urbana, Illinois 61801"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Alabama, Department of Engineering, Tuscaloosa, Alabama 35487","institution_ids":["https://openalex.org/I17301866"]},{"raw_affiliation_string":"University of Illinois, Department of General Engineering, Urbana, Illinois 61801","institution_ids":["https://openalex.org/I157725225"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.7483,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.89692737,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"148","last_page":"167"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11975","display_name":"Evolutionary Algorithms and Applications","score":0.9987999796867371,"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/T11975","display_name":"Evolutionary Algorithms and Applications","score":0.9987999796867371,"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/T10100","display_name":"Metaheuristic Optimization Algorithms Research","score":0.970300018787384,"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/exploit","display_name":"Exploit","score":0.658365786075592},{"id":"https://openalex.org/keywords/classifier","display_name":"Classifier (UML)","score":0.5943225026130676},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5465845465660095},{"id":"https://openalex.org/keywords/stochastic-game","display_name":"Stochastic game","score":0.541702926158905},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4849991500377655},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.40521496534347534},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2629978656768799},{"id":"https://openalex.org/keywords/mathematical-economics","display_name":"Mathematical economics","score":0.14022377133369446}],"concepts":[{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.658365786075592},{"id":"https://openalex.org/C95623464","wikidata":"https://www.wikidata.org/wiki/Q1096149","display_name":"Classifier (UML)","level":2,"score":0.5943225026130676},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5465845465660095},{"id":"https://openalex.org/C22171661","wikidata":"https://www.wikidata.org/wiki/Q1074380","display_name":"Stochastic game","level":2,"score":0.541702926158905},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4849991500377655},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.40521496534347534},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2629978656768799},{"id":"https://openalex.org/C144237770","wikidata":"https://www.wikidata.org/wiki/Q747534","display_name":"Mathematical economics","level":1,"score":0.14022377133369446},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/b978-0-08-050684-5.50013-6","is_oa":false,"landing_page_url":"https://doi.org/10.1016/b978-0-08-050684-5.50013-6","pdf_url":null,"source":{"id":"https://openalex.org/S4210206197","display_name":"Foundations of genetic algorithms","issn_l":"1081-6593","issn":["1081-6593"],"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Foundations of Genetic Algorithms","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W6490312","https://openalex.org/W13101954","https://openalex.org/W32805393","https://openalex.org/W1497256448","https://openalex.org/W1502346114","https://openalex.org/W1595207517","https://openalex.org/W2120425338","https://openalex.org/W3023540311","https://openalex.org/W3215907522","https://openalex.org/W6600258830","https://openalex.org/W6600501990","https://openalex.org/W6629893760"],"related_works":["https://openalex.org/W2961085424","https://openalex.org/W4306674287","https://openalex.org/W3046775127","https://openalex.org/W3107602296","https://openalex.org/W3170094116","https://openalex.org/W4386462264","https://openalex.org/W4364306694","https://openalex.org/W4312192474","https://openalex.org/W4283697347","https://openalex.org/W4210805261"],"abstract_inverted_index":null,"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
