2001
DOI: 10.1002/int.1032
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Relaxing the universal quantifier of the division in fuzzy relational databases

Abstract: In a previous paper, we presented an approach to calculate relational division in fuzzy databases, starting with the GEFRED model. This work centered on dealing with fuzzy attributes and fuzzy values and only the universal quantifier was taken into account since it is the inherent quantifier in classical relational division. In this paper, we present an extension of that division to relax the universal quantifier. With this new system we can use both absolute quantifiers and relative quantifiers irrespective o… Show more

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Cited by 26 publications
(14 citation statements)
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“…The overall matching degree may then be computed using the original Zadeh's [128] calculus of linguistically quantified propositions as in [80,79], Yager's [116] OWA operators as in [135]; cf. also Bosc et al [18], Galindo et al [70,68,69], Vila et al [113], etc.…”
Section: Tools and Techniquesmentioning
confidence: 90%
“…The overall matching degree may then be computed using the original Zadeh's [128] calculus of linguistically quantified propositions as in [80,79], Yager's [116] OWA operators as in [135]; cf. also Bosc et al [18], Galindo et al [70,68,69], Vila et al [113], etc.…”
Section: Tools and Techniquesmentioning
confidence: 90%
“…Bu model bulanık ifadeleri tanımlama ve tanımlanan bu değerler arasındaki olasılık dağılımını ortaya koyma ilkesinden yola çıkmaktadır. Dolayısıyla olasılık ve bulanık mantık tabanlı ilişkisel veri tabanları üzerine modellenmiş ve literatürdeki çalışmalara da temel teşkil etmiştir [11]. …”
Section: Li̇teratür İncelemesi̇ (Review Of Literature)unclassified
“…However, for some operations, multiple fuzzy versions have been proposed. One such operation lacking a clear, widely accepted fuzzy counterpart is the division of relations which has been studied by many researchers, including Yager (1991), Dubois and Prade (1996), and Galindo, Medina, Medina, Cubero, and Garcia (2001); see also a chapter by (2001); see also a chapter by Bosc et al in this volume.…”
Section: Fuzzy Preferences Inside Query Conditionsmentioning
confidence: 99%