Intuitionistic fuzzy sets and their variants
Applications of intuitionistic fuzzy sets to assessment and multi-criteria decision making

Michael Voskoglou; Said Broumi

Volume 4, Issue 4 , October 2023, , Pages 299-309

  The Intuitionistic Fuzzy Sets (IFSs) are generalizations of Zadeh’s fuzzy sets, in which the elements of the universe have apart from Zadeh’s membership and the degree of non-membership in [0, 1]. This paper studies applications of intuitionistic Fuzzy Sets (FS) to assessment and multi-criteria ...  Read More

Fermatean fuzzy sets and their variants
Pythagorean and fermatean fuzzy sub-group redefined in context of T ̃-norm and S ̃-conorm

Vishnu Narayan Mishra; Tarun Kumar; Mukesh Kumar Sharma; Laxmi Rathour

Volume 4, Issue 2 , June 2023, , Pages 125-135

  This paper aims to study Pythagorean and Fermatean Fuzzy Subgroups (FFSG)  in the context of -norm and  -conorm functions. The paper examines the extensions of fuzzy subgroups, specifically "Pythagorean Fuzzy Subgroups (PFSG)" and "FFSG", along with their properties. In the existing literature ...  Read More

Type-2 fuzzy sets and their variants
Type-2 fuzzy logic controller design optimization using the PSO approach for ECG prediction

Mahmut Dirik

Volume 3, Issue 2 , June 2022, , Pages 158-168

  In this study, a hybrid model for prediction issues based on IT2FLS and Particle Swarm Optimization (PSO) is proposed. The main contribution of this work is to discover the ideal strategy for creating an optimal value vector to optimize the membership function of the fuzzy controller. It should be emphasized ...  Read More

Intuitionistic fuzzy sets and their variants
Some results on certain properties of intuitionistic fuzzy sets

Jaydip Bhattacharya

Volume 2, Issue 4 , December 2021, , Pages 377-387

  An operator is a special symbol for performing a specific function. Several operators like modal operators, topological operators, level operators, etc. have been defined over intuitionistic fuzzy sets. At the same time, so many operations were introduced and studied. The key objective of this paper ...  Read More

Neutrosophic sets and their variants
Neutrosophic soft matrices and its application in medical diagnosis

Mamoni Dhar

Volume 2, Issue 1 , March 2021, , Pages 23-32

  In real life situations, there are many issues in which we face uncertainties, vagueness, complexities and unpredictability. Neutrosophic sets are a mathematical tool to address some issues which cannot be met using the existing methods. Neutrosophic soft matrices play a crucial role in handling indeterminant ...  Read More

Fuzzy sets and their variants
An overview of portfolio optimization using fuzzy data envelopment analysis models

Mehrdad Rasoulzadeh; Mohammad Fallah

Volume 1, Issue 3 , September 2020, , Pages 180-188

  A combination of projects, assets, programs, and other components put together in a set is called a portfolio. Arranging these components helps to facilitate the efficient management of the set and subsequently leads to achieving the strategic goals. Generally, the components of the portfolio are quantifiable ...  Read More