Results 141 to 150 of about 17,216 (168)

Fuzzy Limits and Fuzzy Nearness Relation

2001
The aim of this paper is to introduce the notion of fuzzy limit within the fuzzy analysis developed in the concept of fuzzy nearness relation. The main results concern the corresponding calculus.
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Confluence and related properties of fuzzy relations

2009 IEEE International Conference on Fuzzy Systems, 2009
Confluence and termination are essential properties of relations connected to the idea of rewriting and substituting which appear in abstract rewriting systems. This paper presents a preliminary study of confluence, termination, and related properties from the point of view of fuzzy logic leaving the ordinary notions a particular case when the ...
Radim Belohlávek, Tomas Kuhr, Vilém Vychodil   +2 more
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Collective relations of fuzzy relational structures

Journal of Intelligent & Fuzzy Systems, 2018
This paper focuses on fuzzy relational structures. In order to collect the knowledge that has been acquired with regard to fuzzy relational structures, the concept of collective relations is proposed and characterizations of collective relations are investigated. A method on computing the largest collective relation is further given. Moreover, based on
Yibin Du, Ping Zhu 0001
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Fuzzy Closeness Relation as a Basis for Weakening Fuzzy Relational Queries

2004
Query weakening is the modification of the conditions involved in a query in order to obtain a less restrictive variant and then a non empty set of answers. The aim of the paper is to propose an approach for dealing with this problem in the case of fuzzy queries against relational databases.
Patrick Bosc, Allel HadjAli, Olivier Pivert   +2 more
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On a fuzzy bipolar relational algebra

Information Sciences, 2013
This paper presents an extension of relational algebra suitable for the handling of bipolar concepts. The type of queries considered involves two parts: a first one which expresses a (possibly flexible) constraint, and a second one that corresponds to a (possibly flexible) wish.
Bosc, Patrick, Pivert, Olivier
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Fuzzy relations and fuzzy functions

Fuzzy Sets and Systems, 1986
The author introduces, on a complete Brouwerian lattice L, interesting definitions of L-valued fuzzy equivalence relation, L-valued fuzzy function, L-fuzzy partition, and he goes deeply into their links. Noteworthy consequence of this new definition is that L-fuzzy-functions, so defined, assume values in a Boolean subalgebra of the lattice L. Later the
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Fuzzy Relations and Fuzzy Graphs

1985
Fuzzy relations are fuzzy subsets of X × Y, that is, mappings from X → Y. They have been studied by a number of authors, in particular by Zadeh [1965, 1971], Kaufmann [1975], and Rosenfeld [1975]. Applications of fuzzy relations are widespread and important. We shall consider some of them and point to more possible uses at the end of this chapter.
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Entropy measure for a fuzzy relation and its application in attribute reduction for heterogeneous data

Applied Soft Computing Journal, 2022
Gangqiang Zhang, Liangdong Qu, Chen Siyao   +2 more
exaly  

Ranking triangle and trapezoidal fuzzy numbers based on the relative preference relation

Applied Mathematical Modelling, 2015
Knight Wang
exaly  

Inequality relation between fuzzy numbers and its use in fuzzy optimization

Fuzzy Sets and Systems, 1985
Jaroslav Ramik
exaly