Volume 23 (2026)
Volume 22 (2025)
Volume 21 (2024)
Volume 20 (2023)
Volume 19 (2022)
Volume 18 (2021)
Volume 17 (2020)
Volume 16 (2019)
Volume 15 (2018)
Volume 14 (2017)
Volume 13 (2016)
Volume 12 (2015)
Volume 11 (2014)
Volume 10 (2013)
Volume 9 (2012)
Volume 8 (2011)
Volume 7 (2010)
Volume 6 (2009)
Volume 5 (2008)
Volume 4 (2007)
Volume 3 (2006)
Volume 2 (2005)
Volume 1 (2004)
Number of Articles: 15
Fuzzy type theory with partial functions
Volume 16, Issue 2 , March and April 2019, Pages 1-16
Abstract
This paper is a study of fuzzy type theory (FTT) with partial functions. Out of several possibilities we decided tointroduce a special value ”∗” that represents ”undefined”. In the interpretation of FTT, this value lays outside of thecorresponding domain. In the syntax ... Read MoreStabilization of chaotic systems via fuzzy time-delayed controller approac
Volume 16, Issue 2 , March and April 2019, Pages 17-29
Abstract
In this paper, we investigate the stabilization of unstable periodic orbits of continuous time chaotic systems usingfuzzy time-delayed controllers. For this aim, we present a control method that can achieve stabilization of an unstableperiodic orbit (UPO) without any knowledge of the system model. Our ... Read MoreIncidence cuts and connectivity in fuzzy incidence graphs
Volume 16, Issue 2 , March and April 2019, Pages 31-43
Abstract
Fuzzy incidence graphs can be used as models for nondeterministic interconnection networks having extra node-edgerelationships. For example, ramps in a highway system may be modeled as a fuzzy incidence graph so that unexpectedflow between cities and highways can be effectively studied and controlled. ... Read MoreComparing uncertainty data in epistemic and ontic sense used to decision making problem
Volume 16, Issue 2 , March and April 2019, Pages 45-55
Abstract
In the paper aspect of comparability alternatives in decision making problem by imprecise or incomplete information isexamined. In particular, new definitions of transitivity based on the measure of the intensity preference between pairsof alternatives in epistemic and ontic case is presented and its ... Read MoreThe fuzzy generalized Taylor’s expansion with application in fractional differential equations
Volume 16, Issue 2 , March and April 2019, Pages 57-72
Abstract
In this paper, the generalized Taylor’s expansion is presented for fuzzy-valued functions. To achieve this aim, fuzzyfractional mean value theorem for integral, and some properties of Caputo generalized Hukuhara derivative are necessarythat we prove them in details. In application, the fractional ... Read MoreA symbol-based fuzzy decision-making approach to evaluate the user satisfaction on services in academic digital libraries
Volume 16, Issue 2 , March and April 2019, Pages 73-86
Abstract
Academic libraries play a significant role in providing core services that include research, teaching and learning. Usersatisfaction is an important indicator for evaluating the performance of library service. This paper develops a methodfor measuring the user satisfaction in a group decision-making ... Read MoreStratified (L; M)-semiuniform convergence tower spaces
Volume 16, Issue 2 , March and April 2019, Pages 87-96
Abstract
The notion of stratified (L, M)-semiuniform convergence tower spaces is introduced, which extends the notions ofprobabilistic semiuniform convergence spaces and lattice-valued semiuniform convergence spaces. The resulting categoryis shown to be a strong topological universe. Besides, the relations between ... Read MoreRelationships between completeness of fuzzy quasi-uniform spaces
Volume 16, Issue 2 , March and April 2019, Pages 97-106
Abstract
In this paper, we give a kind of Cauchy 1-completeness in probabilistic quasi-uniform spaces by using 1-filters. Utilizingthe relationships among probabilistic quasi-uniformities, classical quasi-uniformities and Hutton [0, 1]-quasi-uniformities,we show the relationships between their completeness. In ... Read MoreSystem of fuzzy fractional differential equations in generalized metric space
Volume 16, Issue 2 , March and April 2019, Pages 107-121
Abstract
In this paper, we study the existence of integral solutions of fuzzy fractional differential systems with nonlocal conditions under Caputo generalized Hukuhara derivatives. These models are considered in the framework of completegeneralized metric spaces in the sense of Perov. The novel feature of our ... Read MoreRanking triangular interval-valued fuzzy numbers based on the relative preference relation
Volume 16, Issue 2 , March and April 2019, Pages 123-136
Abstract
In this paper, we first use a fuzzy preference relation with a membership function representing preference degree forcomparing two interval-valued fuzzy numbers and then utilize a relative preference relation improved from the fuzzypreference relation to rank a set of interval-valued fuzzy numbers. Since ... Read MoreOn characterizations of the fully rational fuzzy choice functions
Volume 16, Issue 2 , March and April 2019, Pages 137-146
Abstract
In the present paper, we introduce the fuzzy Nehring axiom, fuzzy Sen axiom and weaker form of the weak fuzzycongruence axiom. We establish interrelations between these axioms and their relation with fuzzy Chernoff axiom. Weexpress full rationality of a fuzzy choice function using these axioms along ... Read MoreExponential membership function and duality gaps for I-fuzzy linear programming problems
Volume 16, Issue 2 , March and April 2019, Pages 147-163
Abstract
Fuzziness is ever presented in real life decision making problems. In this paper, we adapt the pessimistic approach tostudy a pair of linear primal-dual problem under intuitionistic fuzzy (I-fuzzy) environment and prove certain dualityresults. We generate the duality results using exponential membership ... Read MoreA hybrid filter-based feature selection method via hesitant fuzzy and rough sets concepts
Volume 16, Issue 2 , March and April 2019, Pages 165-182
Abstract
High dimensional microarray datasets are difficult to classify since they have many features with small number ofinstances and imbalanced distribution of classes. This paper proposes a filter-based feature selection method to improvethe classification performance of microarray datasets by selecting the ... Read MoreFirst order linear fuzzy dynamic equations on time scales
Volume 16, Issue 2 , March and April 2019, Pages 183-196
Abstract
In this paper, we study the concept of generalized differentiability for fuzzy-valued functions on time scales. Usingthe derivative of the product of two functions, we provide solutions to first order linear fuzzy dynamic equations. Wepresent some examples to illustrate our results. Read MoreThe Sugeno fuzzy integral of concave functions
Volume 16, Issue 2 , March and April 2019, Pages 197-204