{"id":"https://openalex.org/W1979551750","doi":"https://doi.org/10.1016/0020-0255(90)90012-y","title":"Adaptive selection of query execution strategies by learning automata","display_name":"Adaptive selection of query execution strategies by learning automata","publication_year":1990,"publication_date":"1990-04-01","ids":{"openalex":"https://openalex.org/W1979551750","doi":"https://doi.org/10.1016/0020-0255(90)90012-y","mag":"1979551750"},"language":"en","primary_location":{"id":"doi:10.1016/0020-0255(90)90012-y","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0020-0255(90)90012-y","pdf_url":null,"source":{"id":"https://openalex.org/S192650101","display_name":"Information Sciences","issn_l":"0020-0255","issn":["0020-0255","1872-6291"],"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":"Information Sciences","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/A5000681085","display_name":"Frank Wm. Tompa","orcid":"https://orcid.org/0000-0002-1907-9535"},"institutions":[{"id":"https://openalex.org/I151746483","display_name":"University of Waterloo","ror":"https://ror.org/01aff2v68","country_code":"CA","type":"education","lineage":["https://openalex.org/I151746483"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Frank Wm. Tompa","raw_affiliation_strings":["Data Structuring Group, Department of Computer Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Data Structuring Group, Department of Computer Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1","institution_ids":["https://openalex.org/I151746483"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5077428029","display_name":"Jos\u00e9I. Icaza","orcid":null},"institutions":[{"id":"https://openalex.org/I151746483","display_name":"University of Waterloo","ror":"https://ror.org/01aff2v68","country_code":"CA","type":"education","lineage":["https://openalex.org/I151746483"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Jos\u00e9I. Icaza","raw_affiliation_strings":["Data Structuring Group, Department of Computer Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Data Structuring Group, Department of Computer Science, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1","institution_ids":["https://openalex.org/I151746483"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I151746483"],"apc_list":{"value":3200,"currency":"USD","value_usd":3200},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.15943205,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"50","issue":"3","first_page":"219","last_page":"240"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9958999752998352,"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":0.9958999752998352,"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/T10772","display_name":"Distributed systems and fault tolerance","score":0.9926999807357788,"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/T12288","display_name":"Optimization and Search Problems","score":0.9926000237464905,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8702368140220642},{"id":"https://openalex.org/keywords/query-optimization","display_name":"Query optimization","score":0.6545336246490479},{"id":"https://openalex.org/keywords/sargable","display_name":"Sargable","score":0.579140305519104},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.5623114705085754},{"id":"https://openalex.org/keywords/selection","display_name":"Selection (genetic algorithm)","score":0.5251907110214233},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.48341548442840576},{"id":"https://openalex.org/keywords/online-aggregation","display_name":"Online aggregation","score":0.4105914831161499},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.3563084304332733},{"id":"https://openalex.org/keywords/web-search-query","display_name":"Web search query","score":0.31171488761901855},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.26567649841308594},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.22554367780685425},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.20648810267448425},{"id":"https://openalex.org/keywords/search-engine","display_name":"Search engine","score":0.19082045555114746}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8702368140220642},{"id":"https://openalex.org/C157692150","wikidata":"https://www.wikidata.org/wiki/Q2919848","display_name":"Query optimization","level":2,"score":0.6545336246490479},{"id":"https://openalex.org/C192939062","wikidata":"https://www.wikidata.org/wiki/Q104840822","display_name":"Sargable","level":4,"score":0.579140305519104},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.5623114705085754},{"id":"https://openalex.org/C81917197","wikidata":"https://www.wikidata.org/wiki/Q628760","display_name":"Selection (genetic algorithm)","level":2,"score":0.5251907110214233},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.48341548442840576},{"id":"https://openalex.org/C24028149","wikidata":"https://www.wikidata.org/wiki/Q7094056","display_name":"Online aggregation","level":5,"score":0.4105914831161499},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3563084304332733},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.31171488761901855},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.26567649841308594},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.22554367780685425},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.20648810267448425},{"id":"https://openalex.org/C97854310","wikidata":"https://www.wikidata.org/wiki/Q19541","display_name":"Search engine","level":2,"score":0.19082045555114746}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0020-0255(90)90012-y","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0020-0255(90)90012-y","pdf_url":null,"source":{"id":"https://openalex.org/S192650101","display_name":"Information Sciences","issn_l":"0020-0255","issn":["0020-0255","1872-6291"],"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":"Information Sciences","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions","score":0.44999998807907104}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W6490312","https://openalex.org/W10822811","https://openalex.org/W48931984","https://openalex.org/W117986637","https://openalex.org/W1524672188","https://openalex.org/W1527920117","https://openalex.org/W1972072126","https://openalex.org/W1977570286","https://openalex.org/W1986089942","https://openalex.org/W2000025733","https://openalex.org/W2003274998","https://openalex.org/W2012301138","https://openalex.org/W2026896584","https://openalex.org/W2064018461","https://openalex.org/W2068100443","https://openalex.org/W2073618455","https://openalex.org/W2081457867","https://openalex.org/W2094611165","https://openalex.org/W2111607006","https://openalex.org/W2153329411","https://openalex.org/W2158141386","https://openalex.org/W2160575156","https://openalex.org/W2481560098","https://openalex.org/W4232023621","https://openalex.org/W6600258830","https://openalex.org/W6600409813","https://openalex.org/W6602044578","https://openalex.org/W6604787788","https://openalex.org/W6643010290","https://openalex.org/W6646803659","https://openalex.org/W6656948046","https://openalex.org/W6670928677","https://openalex.org/W6683735544"],"related_works":["https://openalex.org/W3125756434","https://openalex.org/W2096359267","https://openalex.org/W185198413","https://openalex.org/W2889903446","https://openalex.org/W2184296057","https://openalex.org/W2150741898","https://openalex.org/W2362460270","https://openalex.org/W2901901036","https://openalex.org/W1793997780","https://openalex.org/W4381740310"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-08-21T09:56:20.448147","created_date":"2025-10-10T00:00:00"}
