Picture fuzzy sets and their variants
1. The picture fuzzy distance measure in controlling network power consumption

Ngan Thi Roan; Salvador Coll; Marina Alonso; Juan Miguel Martínez Rubio; Pedro López; Fran Andujar; Son Hoang Le; Manh Van Vu; Florentin Smarandache

Volume 1, Issue 3 , Summer 2020, Pages 148-168

http://dx.doi.org/10.22105/jfea.2020.249183.1009

Abstract
  In order to solve the complex decision-making problems, there are many approaches and systems based on the fuzzy theory were proposed. In 1998, Smarandache introduced the concept of single-valued neutrosophic set as a complete development of fuzzy theory. In this paper, we research on the distance measure ...  Read More

Neutrosophic sets and their variants
2. Some remarks on neutro-fine topology

Veerappan Chinnadurai; Mayandi Pandaram Sindhu

Volume 1, Issue 3 , Summer 2020, Pages 169-186

http://dx.doi.org/10.22105/jfea.2020.251783.1020

Abstract
  The neutro-fine topological space is a space that contains a combination of neutrosophic and fine sets. In this study, the various types of open sets such as generalized open and semi-open sets are defined in such space. The concept of interior and closure on semi-open sets are defined and some of their ...  Read More

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

Mehrdad Rasoulzadeh; Mohammad Fallah

Volume 1, Issue 3 , Summer 2020, Pages 187-197

http://dx.doi.org/10.22105/jfea.2020.255034.1027

Abstract
  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

Fuzzy sets and their variants
4. Assessment and linear programming under fuzzy conditions

Michael Voskoglou

Volume 1, Issue 3 , Summer 2020, Pages 198-216

http://dx.doi.org/10.22105/jfea.2020.253436.1024

Abstract
  The present work focuses on two directions. First, a new fuzzy method using triangular / trapezoidal fuzzy numbers as tools is developed for evaluating a group’s mean performance, when qualitative grades instead of numerical scores are used for assessing its members’ individual performance. ...  Read More

Type-2 fuzzy sets and their variants
5. Using interval type-2 fuzzy logic to analyze Igbo emotion words

Uduak Umoh; Imo Eyoh; Etebong Isong; Anietie Ekong; Salvation Peter

Volume 1, Issue 3 , Summer 2020, Pages 217-240

http://dx.doi.org/10.22105/jfea.2020.251544.1021

Abstract
  Several attempts had been made to analyze emotion words in the fields of linguistics, psychology and sociology; with the advent of computers, the analyses of these words have taken a different dimension. Unfortunately, limited attempts have so far been made to using interval type-2 fuzzy logic (IT2FL) ...  Read More

Fuzzy sets and their variants
6. Multi item inventory model include lead time with demand dependent production cost and set-up-cost in fuzzy environment

Satya Kumar Das

Volume 1, Issue 3 , Summer 2020, Pages 241-258

http://dx.doi.org/10.22105/jfea.2020.254081.1025

Abstract
  In this paper, we have developed the multi-item inventory model in the fuzzy environment. Here we considered the demand rate is constant and production cost is dependent on the demand rate. Set-up- cost is dependent on average inventory level as well as demand. Lead time crashing cost is considered the ...  Read More

Spherical fuzzy sets
7. Some similarity measures of spherical fuzzy sets based on the Euclidean distance and their application in medical diagnosis

Princy Rayappan; Mohana Krishnaswamy

Volume 1, Issue 3 , Summer 2020, Pages 259-267

http://dx.doi.org/10.22105/jfea.2020.251669.1018

Abstract
  Similarity measure is an important tool in multiple criteria decision-making problems, which can be used to measure the difference between the alternatives. In this paper, some new similarity measures of Spherical Fuzzy Sets (SFS) are defined based on the Euclidean distance measure and the proposed similarity ...  Read More