Volume 23 (2026)
Volume 22 (2025)
Volume 21 (2024)
Volume 20 (2023)
Volume 19 (2022)
Volume 18 (2021)
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)
Optimal control of linear fuzzy time-variant controlled systems

H. Zarei; A. Khastan; A. Zafari

Volume 17, Issue 5 , September and October 2020, Pages 1-12

Abstract
  In this paper, we study linear fuzzy time-variant optimal control systems using the generalized differentiability concept and we present the general form of optimal controls and states. Some examples are provided to illustrate our results.  Read More

Individual ergodic theorem for intuitionistic fuzzy observables using intuitionistic fuzzy state

K. Cunderlkova

Volume 17, Issue 5 , September and October 2020, Pages 13-22

Abstract
  The classical ergodic theory hasbeen built on σ-algebras. Later the Individual ergodictheorem was studied on more general structures like MV-algebrasand quantum structures. The aim of this paper is to formulate theIndividual ergodic theorem for intuitionistic fuzzy observablesusing  m-almost ...  Read More

Greedy decomposition integrals

A. Seliga

Volume 17, Issue 5 , September and October 2020, Pages 23-28

Abstract
  In this contribution we define a new class of non-linear integrals based on decomposition integrals. These integrals are motivated by greediness of many real-life situations. Another view on this new class of integrals is that it is a generalization of both the Shilkret and PAN integrals. Moreover, it ...  Read More

Arrow theorems in the fuzzy setting

A. Raventos-Pujol; M. J. Campion; E. Indurain

Volume 17, Issue 5 , September and October 2020, Pages 29-41

Abstract
  Throughout this paper, our  main idea is to analyze the Arrovian approach in a fuzzy context, paying attention to different extensions of the classical Arrow's model arising in mathematical Social Choice to aggregate preferences that the agents define on a set of alternatives. There is a wide set ...  Read More

Solving fuzzy stochastic multi-objective programming problems based on a fuzzy inequality

S. S. Nabavi; M. Souzban; M. R. Safi; Z. Sarmast

Volume 17, Issue 5 , September and October 2020, Pages 43-52

Abstract
  Probabilistic or stochastic programming is a framework for modeling optimization problems that involve uncertainty.In this paper, we focus on multi-objective linear programmingproblems in which the coefficients of constraints and the righthand side vector are fuzzy random variables. There are several ...  Read More

Synchronization criteria for T-S fuzzy singular complex dynamical networks with Markovian jumping parameters and mixed time-varying delays using pinning control

M. Syed Ali; M. Usha; M. S. Alhodaly

Volume 17, Issue 5 , September and October 2020, Pages 53-68

Abstract
  In this paper, we are discuss about the issue of synchronization for singular complex dynamical networks with Markovian jumping parameters and additive time-varying delays through pinning control by Takagi-Sugeno (T-S) fuzzy theory.The complex dynamical systems consist of m nodes and the systems ...  Read More

Risk-adjusted control charts based on LR-fuzzy data

A. Rezaeifar; B. Sadeghpour Gildeh; G. R. Mohtashami Borzadaran

Volume 17, Issue 5 , September and October 2020, Pages 69-80

Abstract
  Control charts are widely used in industrial processes as well as in health sciences and particularly for monitoring the performance of cardiac surgeon or a group of surgeons based on the preoperative risk of patients. Since the preoperative risk is a vague and nonprecise variable and the anesthesiologists ...  Read More

Extended graphs based on KM-fuzzy metric spaces

M. Hamidi; S. Jahanpanah; A. Radfar

Volume 17, Issue 5 , September and October 2020, Pages 81-95

Abstract
  This paper,  applies the concept  of KM-fuzzy metric spaces and  introduces a novel concept of KM-fuzzy metric  graphs based on KM-fuzzy metric spaces.  This study, investigates the finite KM-fuzzy metric spaces with respect to metrics and KM-fuzzy metrics and constructs KM-fuzzy ...  Read More

Design of robust fuzzy Sliding-Mode control for a class of the Takagi-Sugeno uncertain fuzzy systems using scalar Sign function

L. Chaouech; M. Soltani; A. Chaari

Volume 17, Issue 5 , September and October 2020, Pages 97-107

Abstract
  This article presents a fuzzy sliding-mode control scheme for a class of Takagi-Sugeno (T-S) fuzzy which are subject to norm-bounded uncertainties in each subsystem. The proposed stabilization method can be adopted to explore T-S uncertain fuzzy systems (TSUFS) with various local control inputs. Firstly, ...  Read More

Multigranulation single valued neutrosophic covering-based rough sets and their applications to multi-criteria group decision making

J. Q. Wang; X. H. Zhang

Volume 17, Issue 5 , September and October 2020, Pages 109-126

Abstract
  In this paper, three types of (philosophical, optimistic and pessimistic) multigranulation single valued neutrosophic (SVN) covering-based rough set models are presented, and these three models are applied to the problem of multi-criteria group decision making (MCGDM).Firstly, a type of SVN covering-based ...  Read More

Fuzzy decision in testing hypotheses by fuzzy data: Two case studies

A. Parchami

Volume 17, Issue 5 , September and October 2020, Pages 127-136

Abstract
  In testing hypotheses, we may confront with cases where data are recorded as non-precise (fuzzy) rather than crisp. In such situations, the classical methods of testing hypotheses are not capable and need to be generalized. In solving the problem of testing hypotheses based on fuzzy data, the fuzziness ...  Read More

On the use of Heronian means in a similarity classifier

O. Kurama

Volume 17, Issue 5 , September and October 2020, Pages 137-146

Abstract
  This paper introduces new similarity classifiers using the Heronian mean, and the generalized Heronian mean operators. We examine the use of these operators at the aggregation step within the similarity classifier. The similarity classifier was earlier studied with other operators, in particular with ...  Read More

Extensions of ELECTRE-I and TOPSIS methods for group decision-making under complex Pythagorean fuzzy environment

M. Akram; H. Garg; K. Zahid

Volume 17, Issue 5 , September and October 2020, Pages 147-164

Abstract
  Multi-criteria group decision-making is a process in which decision makers assess the performance of alternatives on the basis of conflicting criteria to opt the most worthy alternative as solution. TOPSIS and ELECTRE are effective and commonly used methods to solve multiple criteria decision-making ...  Read More

An improved similarity measure of generalized trapezoidal fuzzy numbers and its application in multi-attribute group decision making

A. Wu; H. Li; F. Wang

Volume 17, Issue 5 , September and October 2020, Pages 165-181

Abstract
  Generalized trapezoidal fuzzy numbers (GTFNs) have been widely applied in uncertain decision-making problems. The similarity between GTFNs plays an important part in solving such problems, while there are some limitations in existing similarity measure methods. Thus, based on the cosine similarity, a ...  Read More

An integrated model of fuzzy multi-criteria decision making and stochastic programming for the evaluating and ranking of advanced manufacturing technologies

M. Olfati; W. Yuan; S. H. Nasseri

Volume 17, Issue 5 , September and October 2020, Pages 183-196

Abstract
  Investment appraisal in advanced manufacturing technologies (AMTs) has been receiving considerable attention over the past three decades. As stated in numerous studies, traditional engineering economic methods cannot adequately justify investments in AMTs. Thus, beside these methods, some other solutions ...  Read More