Fuzzy sets and their variants
26. 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
27. 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

Fuzzy sets and their variants
28. Fuzzy programming approach to Bi-level linear programming problems

Eshetu Dadi Gurmu; Tagay Takele Fikadu

Volume 1, Issue 4 , Autumn 2020, , Pages 268-290

http://dx.doi.org/10.22105/jfea.2020.262326.1069

Abstract
  In this study, we discussed a fuzzy programming approach to bi-level linear programming problems and their application. Bi-level linear programming is characterized as mathematical programming to solve decentralized problems with two decision-makers in the hierarchal organization. They become more important ...  Read More

Fuzzy sets and their variants
29. An overview of data envelopment analysis models in fuzzy stochastic environments

Fatemeh Zahra Montazeri

Volume 1, Issue 4 , Autumn 2020, , Pages 291-299

http://dx.doi.org/10.22105/jfea.2020.258330.1030

Abstract
  One of the appropriate and efficient tools in the field of productivity measurement and evaluation is data envelopment analysis, which is used as a non-parametric method to calculate the efficiency of decision-making units. Today, the use of data envelopment analysis technique is expanding rapidly and ...  Read More

Fuzzy sets and their variants
30. A study on fundamentals of refined intuitionistic fuzzy set with some properties

Atiqe Ur Rahman; Muhammad Rayees Ahmad; Muhammad Saeed; Muhammad Ahsan; Muhammad Arshad; Muhammad Ihsan

Volume 1, Issue 4 , Autumn 2020, , Pages 300-314

http://dx.doi.org/10.22105/jfea.2020.261946.1067

Abstract
  Zadeh conceptualized the theory of fuzzy set to provide a tool for the basis of the theory of possibility. Atanassov extended this theory with the introduction of intuitionistic fuzzy set. Smarandache introduced the concept of refined intuitionistic fuzzy set by further subdivision of membership and ...  Read More

Pythagorean fuzzy sets and their variants
31. Interval valued Pythagorean fuzzy ideals in semigroups

Veerappan Chinnadurai; Arul Selvam

Volume 1, Issue 4 , Autumn 2020, , Pages 315-324

http://dx.doi.org/10.22105/jfea.2020.252687.1023

Abstract
  In this paper, we define the new notion of interval-valued Pythagorean fuzzy ideals in semigroups and established the properties of its with suitable examples. Also, we introduce the concept of interval valued Pythagorean fuzzy sub-semigroup, interval valued Pythagorean fuzzy left (resp. right) ideal, ...  Read More

Pythagorean fuzzy sets and their variants
32. Some similarity measures of rough interval Pythagorean fuzzy sets

V. S. Subha; Dhanalakshmi Dhanalakshmi

Volume 1, Issue 4 , Autumn 2020, , Pages 325-335

http://dx.doi.org/10.22105/jfea.2020.262002.1068

Abstract
  In this paper, we expose cosine, jaccard and dice similarity measures and rough interval Pythagorean mean operator. Some of the important properties of the defined similarity measures have been established. Then the proposed methods are applied for solving multi attribute decision making problems. Finally, ...  Read More

Spherical fuzzy sets
33. Spherical interval-valued fuzzy bi-ideals of gamma near-rings

Chinnadurai Veerappan; Shakila Venkatesan

Volume 1, Issue 4 , Autumn 2020, , Pages 336-345

http://dx.doi.org/10.22105/jfea.2020.259268.1040

Abstract
  In this paper we introduce the concept of the spherical interval-valued fuzzy bi-ideal of gamma near-ring R and its some results. The union and intersection of the spherical interval-valued fuzzy bi-ideal of gamma near-ring R is also a spherical interval-valued fuzzy bi-ideal of gamma near-ring R . Further ...  Read More

Neutrosophic sets and their variants
34. K-algebras on quadripartitioned single valued neutrosophic sets

Mohanasundari Mohan; Mohana Krishnaswamy

Volume 1, Issue 4 , Autumn 2020, , Pages 346-362

http://dx.doi.org/10.22105/jfea.2020.254945.1026

Abstract
  Abstract Quadripartitioned single valued neutrosophic (QSVN) set is a powerful structure where we have four components Truth-T, Falsity-F, Unknown-U and Contradiction-C. And also it generalizes the concept of fuzzy, initutionstic and single valued neutrosophic set. In this paper we have proposed the ...  Read More

Pythagorean fuzzy sets and their variants
35. A modified Pythagorean fuzzy analytic hierarchy process based on interval-valued Pythagorean fuzzy numbers

Shahid Ahmad Bhat; Akanksha Singh

Articles in Press, Accepted Manuscript, Available Online from 05 March 2021

http://dx.doi.org/10.22105/jfea.2021.269561.1071

Abstract
  The analytic hierarchy process (AHP), is one of the well-known and most widely used technique to determine the priority weights of alternatives from pairwise comparison matrices. Several fuzzy and intuitionistic fuzzy extensions of AHP have been proposed in the literature. However, these extensions are ...  Read More

Fuzzy sets and their variants
36. New View of Fuzzy Aggregations. Part I: General Information Structure for Decision-Making Models

Gia Sirbiladze

Articles in Press, Accepted Manuscript, Available Online from 07 March 2021

http://dx.doi.org/10.22105/jfea.2021.275084.1080

Abstract
  The Ordered Weighted Averaging (OWA) operator was introduced by R.R. Yager [58] to provide a method for aggregating inputs that lie between the max and min operators. In this article two variants of probabilistic extensions the OWA operator - POWA and FPOWA (introduced by J.M. Merigo [27, 28]) are considered ...  Read More

Other
37. Well Drilling Fuzzy Risk Assessment using Fuzzy FMEA and Fuzzy TOPSIS

Mazdak Khodadadi-Karimvand; Hadi Shirouyehzad

Articles in Press, Accepted Manuscript, Available Online from 07 March 2021

http://dx.doi.org/10.22105/jfea.2021.275955.1086

Abstract
  One of the most important issues that organizations have to deal with is the timely identification and detection of risk factors aimed at preventing incidents. Managers’ and engineers’ tendency towards minimizing risk factors in a service, process or design system has obliged them to analyze ...  Read More