{"id":"https://openalex.org/W2032509834","doi":"https://doi.org/10.1017/s0960129511000673","title":"Formalising PFSQL queries using \u0141\u03a0 fuzzy logic","display_name":"Formalising PFSQL queries using \u0141\u03a0 fuzzy logic","publication_year":2011,"publication_date":"2011-12-14","ids":{"openalex":"https://openalex.org/W2032509834","doi":"https://doi.org/10.1017/s0960129511000673","mag":"2032509834"},"language":"en","primary_location":{"id":"doi:10.1017/s0960129511000673","is_oa":false,"landing_page_url":"https://doi.org/10.1017/s0960129511000673","pdf_url":null,"source":{"id":"https://openalex.org/S101766102","display_name":"Mathematical Structures in Computer Science","issn_l":"0960-1295","issn":["0960-1295","1469-8072"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Mathematical Structures in 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/A5003303052","display_name":"Aleksandar Perovi\u0107","orcid":"https://orcid.org/0000-0002-8326-8007"},"institutions":[{"id":"https://openalex.org/I4068193","display_name":"University of Belgrade","ror":"https://ror.org/02qsmb048","country_code":"RS","type":"education","lineage":["https://openalex.org/I4068193"]}],"countries":["RS"],"is_corresponding":false,"raw_author_name":"ALEKSANDAR PEROVI\u0106","raw_affiliation_strings":["Faculty of Transportation and Traffic Engineering, University of Belgrade, Serbia Email:","Faculty of Transportation and Traffic Engineering, University of Belgrade, Serbia Email: pera@sf.bg.ac.rs"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Transportation and Traffic Engineering, University of Belgrade, Serbia Email:","institution_ids":["https://openalex.org/I4068193"]},{"raw_affiliation_string":"Faculty of Transportation and Traffic Engineering, University of Belgrade, Serbia Email: pera@sf.bg.ac.rs","institution_ids":["https://openalex.org/I4068193"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111745058","display_name":"Aleksandar Taka\u010di","orcid":"https://orcid.org/0009-0008-4279-8010"},"institutions":[{"id":"https://openalex.org/I170726198","display_name":"University of Novi Sad","ror":"https://ror.org/00xa57a59","country_code":"RS","type":"education","lineage":["https://openalex.org/I170726198"]}],"countries":["RS"],"is_corresponding":false,"raw_author_name":"ALEKSANDAR TAKA\u010cI","raw_affiliation_strings":["Faculty of Technology, University of Novi Sad, Serbia Email:","Faculty of technology, university of novi sad, serbia email: stakaci@tf.uns.ac.rs#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Technology, University of Novi Sad, Serbia Email:","institution_ids":["https://openalex.org/I170726198"]},{"raw_affiliation_string":"Faculty of technology, university of novi sad, serbia email: stakaci@tf.uns.ac.rs#TAB#","institution_ids":["https://openalex.org/I170726198"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5072295933","display_name":"Srdjan \u0160krbi\u0107","orcid":"https://orcid.org/0000-0002-3993-4092"},"institutions":[{"id":"https://openalex.org/I170726198","display_name":"University of Novi Sad","ror":"https://ror.org/00xa57a59","country_code":"RS","type":"education","lineage":["https://openalex.org/I170726198"]}],"countries":["RS"],"is_corresponding":false,"raw_author_name":"SRDJAN \u0160KRBI\u0106","raw_affiliation_strings":["Faculty of Science, University of Novi Sad, Serbia Trg Dositeja Obradovi\u0107a 3, 21000 Novi Sad, Serbia Email:","Faculty of Science, University of Novi Sad, Serbia Trg Dositeja Obradovi\u0107a 3, 21000 Novi Sad, Serbia Email: shkrba@uns.ac.rs"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Science, University of Novi Sad, Serbia Trg Dositeja Obradovi\u0107a 3, 21000 Novi Sad, Serbia Email:","institution_ids":["https://openalex.org/I170726198"]},{"raw_affiliation_string":"Faculty of Science, University of Novi Sad, Serbia Trg Dositeja Obradovi\u0107a 3, 21000 Novi Sad, Serbia Email: shkrba@uns.ac.rs","institution_ids":["https://openalex.org/I170726198"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.2484,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.79034779,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"22","issue":"3","first_page":"533","last_page":"547"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T11106","display_name":"Data Management and Algorithms","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9984999895095825,"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/T11596","display_name":"Constraint Satisfaction and Optimization","score":0.996999979019165,"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/fuzzy-logic","display_name":"Fuzzy logic","score":0.6610718965530396},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5859065651893616},{"id":"https://openalex.org/keywords/extension","display_name":"Extension (predicate logic)","score":0.5026683807373047},{"id":"https://openalex.org/keywords/conservative-extension","display_name":"Conservative extension","score":0.5009102821350098},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.48945513367652893},{"id":"https://openalex.org/keywords/interpretation","display_name":"Interpretation (philosophy)","score":0.4383188486099243},{"id":"https://openalex.org/keywords/resolution","display_name":"Resolution (logic)","score":0.4307405352592468},{"id":"https://openalex.org/keywords/conjunctive-query","display_name":"Conjunctive query","score":0.4254021942615509},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.3889616131782532},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3334002196788788},{"id":"https://openalex.org/keywords/relational-database","display_name":"Relational database","score":0.3248044550418854},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.24656647443771362},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.21611008048057556}],"concepts":[{"id":"https://openalex.org/C58166","wikidata":"https://www.wikidata.org/wiki/Q224821","display_name":"Fuzzy logic","level":2,"score":0.6610718965530396},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5859065651893616},{"id":"https://openalex.org/C2778029271","wikidata":"https://www.wikidata.org/wiki/Q5421931","display_name":"Extension (predicate logic)","level":2,"score":0.5026683807373047},{"id":"https://openalex.org/C2780432614","wikidata":"https://www.wikidata.org/wiki/Q864213","display_name":"Conservative extension","level":2,"score":0.5009102821350098},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.48945513367652893},{"id":"https://openalex.org/C527412718","wikidata":"https://www.wikidata.org/wiki/Q855395","display_name":"Interpretation (philosophy)","level":2,"score":0.4383188486099243},{"id":"https://openalex.org/C138268822","wikidata":"https://www.wikidata.org/wiki/Q1051925","display_name":"Resolution (logic)","level":2,"score":0.4307405352592468},{"id":"https://openalex.org/C65647387","wikidata":"https://www.wikidata.org/wiki/Q1781706","display_name":"Conjunctive query","level":3,"score":0.4254021942615509},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.3889616131782532},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3334002196788788},{"id":"https://openalex.org/C5655090","wikidata":"https://www.wikidata.org/wiki/Q192588","display_name":"Relational database","level":2,"score":0.3248044550418854},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.24656647443771362},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.21611008048057556}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1017/s0960129511000673","is_oa":false,"landing_page_url":"https://doi.org/10.1017/s0960129511000673","pdf_url":null,"source":{"id":"https://openalex.org/S101766102","display_name":"Mathematical Structures in Computer Science","issn_l":"0960-1295","issn":["0960-1295","1469-8072"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Mathematical Structures in 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":25,"referenced_works":["https://openalex.org/W35516056","https://openalex.org/W132151029","https://openalex.org/W1536777985","https://openalex.org/W1823694525","https://openalex.org/W1964228009","https://openalex.org/W1976537120","https://openalex.org/W1988669396","https://openalex.org/W2008152899","https://openalex.org/W2017023392","https://openalex.org/W2018957484","https://openalex.org/W2022954591","https://openalex.org/W2024065710","https://openalex.org/W2065267682","https://openalex.org/W2072960837","https://openalex.org/W2087409782","https://openalex.org/W2110182592","https://openalex.org/W2128987286","https://openalex.org/W2129398837","https://openalex.org/W2161568314","https://openalex.org/W2163044634","https://openalex.org/W2166024418","https://openalex.org/W2801469778","https://openalex.org/W4230076684","https://openalex.org/W4285719527","https://openalex.org/W6751102282"],"related_works":["https://openalex.org/W2898556184","https://openalex.org/W3174970460","https://openalex.org/W1639806124","https://openalex.org/W206482712","https://openalex.org/W2351847247","https://openalex.org/W2288512712","https://openalex.org/W1979093255","https://openalex.org/W2015395878","https://openalex.org/W2964338094","https://openalex.org/W179416842"],"abstract_inverted_index":{"Using":[0],"the":[1,45,48,53,56,77,112,122,126],"concept":[2],"of":[3,47,50,55,86,93,111,128],"a":[4,13,34,91,108,118,130,133],"generalised":[5],"priority":[6,17],"constraint":[7],"satisfaction":[8],"problem,":[9],"we":[10,98,116],"previously":[11],"found":[12,75],"way":[14],"to":[15,43,60],"introduce":[16],"queries":[18,63,88],"into":[19],"fuzzy":[20,71,95],"relational":[21],"databases.":[22],"The":[23,83],"results":[24],"were":[25],"PFSQL":[26,51,62,87],"(Priority":[27],"Fuzzy":[28],"Structured":[29],"Query":[30],"Language)":[31],"together":[32],"with":[33],"database":[35],"independent":[36],"interpreter":[37],"for":[38,125,132],"it.":[39],"In":[40],"an":[41,69],"effort":[42],"improve":[44],"performance":[46],"resolution":[49],"queries,":[52],"aim":[54],"current":[57],"paper":[58],"is":[59,89],"formalise":[61],"by":[64],"obtaining":[65],"their":[66],"interpretation":[67],"in":[68,107],"existing":[70],"logic.":[72,114],"We":[73],"have":[74],"that":[76,100,120],"\u0141\u03a0":[78,113,135],"logic":[79,136],"provides":[80],"sufficient":[81],"elements.":[82],"SELECT":[84],"line":[85],"semantically":[90],"formula":[92],"some":[94],"logic,":[96],"and":[97],"show":[99],"such":[101],"formulas":[102],"can":[103],"be":[104],"naturally":[105],"expressed":[106],"conservative":[109],"extension":[110],"Furthermore,":[115],"prove":[117],"theorem":[119],"gives":[121],"PSPACE":[123],"containment":[124],"complexity":[127],"finding":[129],"model":[131],"given":[134],"formula.":[137]},"counts_by_year":[{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}