Results 261 to 270 of about 5,729 (305)

On the Parameterized OWA Operators for Fuzzy MCDM Based on Vague Set Theory

Fuzzy Optimization and Decision Making, 2006
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Jue Wang 0015, San-Yang Liu, Jie Zhang, Shouyang Wang   +3 more
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Spherical fuzzy soft sets: theory and aggregation operator with its applications

2022
The aim of this paper is to redefine the notion of spherical fuzzy soft sets as a more general concept to make them more functional for solving multi-criteria decision-making problems. We first define the set operations under the new spherical fuzzy soft set environment and obtain some fundamental properties of them.
Aygun, H., Guner, E.
openaire   +4 more sources

Arithmetic operators in interval-valued fuzzy set theory

Information Sciences, 2007
The paper deals with one of the extensions of fuzzy set theory, namely with interval-valued fuzzy sets (which are equivalent to the intuitionistic fuzzy sets). The main contribution of the paper consists in the introduction of basic arithmetic operators on the interval-valued fuzzy sets and in the analysis of their properties.
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Generalised operations on hesitant fuzzy values in the framework of Dempster–Shafer theory

Information Sciences, 2015
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Pavel V. Sevastjanov, Ludmila Dymova
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Two new operators in rough set theory with applications to fuzzy sets

Information Sciences, 2004
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Huaguang Zhang, Hongli Liang, Derong Liu 0001   +2 more
openaire   +1 more source

Condensing operators and topological degree theory in standard fuzzy normed spaces

Fuzzy Sets and Systems, 2010
The level-cut measures of noncompactness are introduced in standard fuzzy normed spaces in the sense of \textit{T. Bag} and \textit{S. K. Samanta} [Fuzzy Sets Syst. 159, No. 6, 685--707 (2008; Zbl 1187.47061)]. Condensing operators in these spaces are studied and the corresponding topological degree is given.
Jian-Zhong Xiao, Ying Lu
openaire   +1 more source

Flight Operation Quality Assessment Model Based on the Fuzzy Logic Theory

2015 10th International Conference on Intelligent Systems and Knowledge Engineering (ISKE), 2015
The flight exam results is the most effective method for assess the flight training to civil flight cadets'. In this paper, we propose an assessment model with the flight operation quality (FOQ) based on the fuzzy logic theory. Combined with the experience of the expert and the analysis of the flight data, a FOQ assessment model was established.
Long Zhang, Kaijun Xu, Heng Yin, Yang Xu 0001   +3 more
openaire   +1 more source

Algebraic Structures and Operations in Fuzzy Soft Set Theory

Communications on Applied Nonlinear Analysis, 2020
Fuzzy soft set theory, introduced as a synthesis of fuzzy set and soft set frameworks, has gained prominence as a robust approach to handling parameterized uncertainty in mathematical modeling. In this paper, we examine the algebraic structures that emerge within the framework of fuzzy soft sets, focusing on the development of fuzzy soft groups ...
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Crisp and Fuzzy Topological Interior and Closure Operators with Inclusion Degree. Theory and Applications

Fundamenta Informaticae, 2013
This article introduces interior and closure operators with inclusion degree considered within a crisp or fuzzy topological framework. First, inclusion degree is introduced in an extension of the interior and closure operators in crisp topology. This idea is then introduced in fuzzy topology by incorporating a relaxed version of fuzzy subsethood.
Homa Fashandi, James F. Peters
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Textures and fuzzy unit operations in rough set theory: An approach to fuzzy rough set models

Fuzzy Sets and Systems, 2018
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