{"id":"https://openalex.org/W1213930480","doi":"https://doi.org/10.1007/978-3-642-14058-7_14","title":"The Bipolar Semantics of Querying Null Values in Regular and Fuzzy Databases","display_name":"The Bipolar Semantics of Querying Null Values in Regular and Fuzzy Databases","publication_year":2010,"publication_date":"2010-01-01","ids":{"openalex":"https://openalex.org/W1213930480","doi":"https://doi.org/10.1007/978-3-642-14058-7_14","mag":"1213930480"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-642-14058-7_14","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-14058-7_14","pdf_url":null,"source":{"id":"https://openalex.org/S2764900261","display_name":"Communications in computer and information science","issn_l":"1865-0929","issn":["1865-0929","1865-0937"],"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":"Communications in Computer and Information 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/A5049938356","display_name":"Tom Matth\u00e9","orcid":null},"institutions":[{"id":"https://openalex.org/I32597200","display_name":"Ghent University","ror":"https://ror.org/00cv9y106","country_code":"BE","type":"education","lineage":["https://openalex.org/I32597200"]}],"countries":["BE"],"is_corresponding":false,"raw_author_name":"Tom Matth\u00e9","raw_affiliation_strings":["Dept. of Telecommunications and Information Processing, Ghent University, St.-Pietersnieuwstraat 41, B-9000, Ghent, Belgium"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Telecommunications and Information Processing, Ghent University, St.-Pietersnieuwstraat 41, B-9000, Ghent, Belgium","institution_ids":["https://openalex.org/I32597200"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036892531","display_name":"Guy De Tr\u00e9","orcid":"https://orcid.org/0000-0002-1283-1915"},"institutions":[{"id":"https://openalex.org/I32597200","display_name":"Ghent University","ror":"https://ror.org/00cv9y106","country_code":"BE","type":"education","lineage":["https://openalex.org/I32597200"]}],"countries":["BE"],"is_corresponding":false,"raw_author_name":"Guy De Tr\u00e9","raw_affiliation_strings":["Dept. of Telecommunications and Information Processing, Ghent University, St.-Pietersnieuwstraat 41, B-9000, Ghent, Belgium"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Telecommunications and Information Processing, Ghent University, St.-Pietersnieuwstraat 41, B-9000, Ghent, Belgium","institution_ids":["https://openalex.org/I32597200"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I32597200"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.08600126,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"137","last_page":"146"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9998999834060669,"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":0.9998999834060669,"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/T10317","display_name":"Advanced Database Systems and Queries","score":0.994700014591217,"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/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9944999814033508,"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/null","display_name":"Null (SQL)","score":0.886798620223999},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.725840151309967},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.5934222340583801},{"id":"https://openalex.org/keywords/fuzzy-logic","display_name":"Fuzzy logic","score":0.546645998954773},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.487239271402359},{"id":"https://openalex.org/keywords/semantics","display_name":"Semantics (computer science)","score":0.4714292883872986},{"id":"https://openalex.org/keywords/value","display_name":"Value (mathematics)","score":0.45021018385887146},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.3499261736869812},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.18578916788101196},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.10192078351974487}],"concepts":[{"id":"https://openalex.org/C203763787","wikidata":"https://www.wikidata.org/wiki/Q371029","display_name":"Null (SQL)","level":2,"score":0.886798620223999},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.725840151309967},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.5934222340583801},{"id":"https://openalex.org/C58166","wikidata":"https://www.wikidata.org/wiki/Q224821","display_name":"Fuzzy logic","level":2,"score":0.546645998954773},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.487239271402359},{"id":"https://openalex.org/C184337299","wikidata":"https://www.wikidata.org/wiki/Q1437428","display_name":"Semantics (computer science)","level":2,"score":0.4714292883872986},{"id":"https://openalex.org/C2776291640","wikidata":"https://www.wikidata.org/wiki/Q2912517","display_name":"Value (mathematics)","level":2,"score":0.45021018385887146},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.3499261736869812},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.18578916788101196},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.10192078351974487},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1007/978-3-642-14058-7_14","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-14058-7_14","pdf_url":null,"source":{"id":"https://openalex.org/S2764900261","display_name":"Communications in computer and information science","issn_l":"1865-0929","issn":["1865-0929","1865-0937"],"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":"Communications in Computer and Information Science","raw_type":"book-chapter"},{"id":"pmh:oai:archive.ugent.be:1002044","is_oa":false,"landing_page_url":"http://hdl.handle.net/1854/LU-1002044","pdf_url":null,"source":{"id":"https://openalex.org/S4306400478","display_name":"Ghent University Academic Bibliography (Ghent University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I32597200","host_organization_name":"Ghent University","host_organization_lineage":["https://openalex.org/I32597200"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISBN: 9783642140570","raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":38,"referenced_works":["https://openalex.org/W71027922","https://openalex.org/W83549190","https://openalex.org/W423086773","https://openalex.org/W607271496","https://openalex.org/W615136929","https://openalex.org/W629087377","https://openalex.org/W879764102","https://openalex.org/W1486310914","https://openalex.org/W1503312825","https://openalex.org/W1543136716","https://openalex.org/W1558832481","https://openalex.org/W1569204053","https://openalex.org/W1578133078","https://openalex.org/W1608935641","https://openalex.org/W1854992514","https://openalex.org/W1923878677","https://openalex.org/W1990391007","https://openalex.org/W1999670122","https://openalex.org/W2013244568","https://openalex.org/W2019950953","https://openalex.org/W2060515098","https://openalex.org/W2063980661","https://openalex.org/W2074622901","https://openalex.org/W2084443344","https://openalex.org/W2100642343","https://openalex.org/W2101091321","https://openalex.org/W2122789628","https://openalex.org/W2123474039","https://openalex.org/W2277344632","https://openalex.org/W2413519554","https://openalex.org/W2912565176","https://openalex.org/W2915777784","https://openalex.org/W4206031975","https://openalex.org/W4211007335","https://openalex.org/W4214637188","https://openalex.org/W4230588984","https://openalex.org/W4236273176","https://openalex.org/W6618666597"],"related_works":["https://openalex.org/W2951287487","https://openalex.org/W1570309050","https://openalex.org/W1994829526","https://openalex.org/W2219563043","https://openalex.org/W2212197444","https://openalex.org/W2097100439","https://openalex.org/W2389183782","https://openalex.org/W1885898241","https://openalex.org/W3106312056","https://openalex.org/W2991879206"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-07-02T09:51:11.867554","created_date":"2016-06-24T00:00:00"}