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: 13
Some aspects on computation of scalar valued and fuzzy valued integrals over fuzzy domains
Volume 20, Issue 3 , May and June 2023, Pages 1-17
Abstract
In this note, we consider the problem of computing a scalar-valued, and also a fuzzy-valued integral over fuzzy spatial domains, which is useful, for instance, to calculate fuzzy areas described by a certain property, allowing the density function to be variable, or evaluate magnitudes in the case ... Read MoreHeuristics-based modelling of human decision process
Volume 20, Issue 3 , May and June 2023, Pages 19-30
Abstract
Attitudinal Choquet integral (ACI) is a recent aggregation operator thatconsiders in the aggregation process the criteria interaction and the DM's attitude, both of which arespecific to the decision-maker. However, this capability comes at the cost of increasedcomplexity that hinders its applicability ... Read MoreDiaz-Metcalf type inequality for Sugeno and pseudo-integrals
Volume 20, Issue 3 , May and June 2023, Pages 31-41
Abstract
In this paper, we have proved Diaz-Metcalf inequality for fuzzy integrals. More precisely:\\If $f, g: [0, 1]\to\mathbb{R}$ are continuous and strictly increasing functions, then the fuzzy integral inequality$$ - \hspace{-1em} \int_0^1 f^s d\mu\cdot - \hspace{-1em} \int_0^1 g^sd\mu\le - ... Read MoreOn existence and stability results to fuzzy Caputo fractional differential inclusions driven by fuzzy mixed quasivariational inequalities
Volume 20, Issue 3 , May and June 2023, Pages 43-59
Abstract
In this paper, we consider a generalized fuzzy differential system (GFDS) consisting of a fuzzy Caputo fractional differential inclusion combined with a fuzzy mixed quasivariational inequality. The GFDS has been known as a framework of fuzzy fractional differential quasivariational inequalities ... Read MoreWeighted K-nearest neighbors classification based on Whale optimization algorithm
Volume 20, Issue 3 , May and June 2023, Pages 61-74
Abstract
K-Nearest Neighbors (KNN) is a classification algorithm based on supervised machine learning, which works according to a voting system. The performance of the KNN algorithm depends on different factors, such as unbalanced distribution of classes, the scalability problem, and considering equal values ... Read MoreFuzzy accompanied approximation space under fuzzy relation
Volume 20, Issue 3 , May and June 2023, Pages 75-94
Abstract
If there is a fuzzy relation $\widetilde{R}$ between two spaces $U$ and $V$, the fuzzy approximations in both spaces based on $\widetilde{R}$ are widely studied, and they basically reflect only the influence from one space to another. In this paper, on each space of $U$ and $V$, two new fuzzy relations ... Read MoreA new extension of a triangular norm on a subinterval $[0,\alpha]$ via an interior operator to the underlying entire bounded lattice
Volume 20, Issue 3 , May and June 2023, Pages 95-113
Abstract
As a proper generalization of the ordinal sum t-norm construction on bounded lattices proposed in [E. A\c{s}{\i}c{\i}, R. Mesiar, New constructions of triangular norms and triangular conorms on an arbitrary bounded lattice, International Journal of General Systems, {\bf 49}(2) (2020), 143-160], the present ... Read MoreThe general algebraic solution of fuzzy linear systems based on a block representation of {1}-inverses
Volume 20, Issue 3 , May and June 2023, Pages 115-126
Abstract
A new method for solving a fuzzy linear system (FLS), $A\tilde X=\tilde Y$, where the coefficient matrix $A$ is an arbitrary real matrix is obtained. A necessary and sufficient condition for the ${\cal R}$-consistency of the associated system of linear equations is obtained, related to itsrepresentative ... Read MoreForward and backward fuzzy rule base interpolation using fuzzy geometry
Volume 20, Issue 3 , May and June 2023, Pages 127-146
Abstract
Fuzzy rule interpolation (FRI) predicts an accountable outcome of a possible course of action in sparse fuzzy rule base system (FRBS). The geometry based linear fuzzy rule interpolation (GLFRI) is extended for multi-dimensional fuzzy rule base interpolation. Expansion/contraction (EC) of triangular, ... Read MoreWeighted approximation of fuzzy numbers by using m-n-step type fuzzy number
Volume 20, Issue 3 , May and June 2023, Pages 147-158
Abstract
In this paper, based on the weighted metric, the problem of approximating a general continuous fuzzy number $u$ with derivable $\underline{u}(r)$ and $\overline{u}(r)$ (left and right cut functions of level value $r$) for $r \in (0,1]$ by using the $m-n-$step type fuzzy number is studied. Two kinds of ... Read MoreA new copula-based bivariate Gompertz--Makeham model and its application to COVID-19 mortality data
Volume 20, Issue 3 , May and June 2023, Pages 159-175
Abstract
One of the useful distributions in modeling mortality (or failure) data is the univariate Gompertz--Makeham distribution. To examine the relationship between the two variables, the extended bivariate Gompertz--Makeham distribution is introduced, and its properties are provided. Also, some reliability ... Read MoreProbabilistic fuzzy argumentation frameworks with finite fuzzy statuses
Volume 20, Issue 3 , May and June 2023, Pages 177-189
Abstract
Randomness and fuzziness of argumentation have attracted the interest of many researchers.However, though each of these two properties is discussed in the past, seldom literature considers both of them.The purpose of this paper aims to explore semantics of the argumentation frameworks with these two ... Read MoreType-2 lattice-valued preorders: A common framework of lattice-valued preorders and various kinds of metrics
Volume 20, Issue 3 , May and June 2023, Pages 191-203