Type-2 fuzzy sets and their variants
Interval type-2 fuzzy logic system for remote vital signs monitoring and shock level prediction

Uduak Umoh; Samuel Udoh; Abdultaofeek Abayomi; Alimot Abdulzeez

Volume 2, Issue 1 , March 2021, , Pages 41-68

https://doi.org/10.22105/jfea.2021.255064.1028

Abstract
  Interval Type-2 Fuzzy Logic Systems (IT2 FLSs) have shown popularity, superiority, and more accuracy in performance in a number of applications in the last decade. This is due to its ability to cope with uncertainty and precisions adequately when compared with its type-1 counterpart. In this paper, an ...  Read More

Type-2 fuzzy sets and their variants
Modeling fuzzimetric cognition of technical analysis decisions: reducing emotional trading

Issam Kouatli

Volume 3, Issue 1 , March 2022, , Pages 45-63

https://doi.org/10.22105/jfea.2021.315178.1171

Abstract
  Stock traders' forecasting strategies are mainly dependent on Technical Analysis (TA) indicators. However, some traders would follow their intuition and emotional aspects when trading instead of following the mathematically solid forecasting techniques of TA(s). The objective of this paper is to help ...  Read More

Plithogenic sets and their variants
An Overview of Plithogenic Set and Symbolic Plithogenic Algebraic Structures

Florentin Smarandache

Volume 4, Issue 1 , March 2023, , Pages 52-59

https://doi.org/10.22105/jfea.2023.382196.1252

Abstract
  This paper is devoted to Plithogeny, Plithogenic Set, and its extensions. These concepts are branches of uncertainty and indeterminacy instruments of practical and theoretical interest. Starting with some examples, we proceed towards general structures. Then we present definitions and applications of ...  Read More

Interval Arithmetic
Using interval arithmetic for providing a MADM approach

Hossein Jafari; Mohammad Ehsanifar

Volume 1, Issue 1 , March 2020, , Pages 57-65

https://doi.org/10.22105/jfea.2020.247946.1004

Abstract
  The VIKOR method was developed for Multi-Criteria Decision Making (MCDM). It determines the compromise ranking list and the compromise solution obtained with the initial weights. This method focuses on ranking and selecting from a set of alternatives in the presence of conflicting criteria. It introduces ...  Read More

Fuzzy sets and their variants
A note on somewhat fuzzy continuity

Zanyar A. Ameen

Volume 4, Issue 1 , March 2023, , Pages 60-64

https://doi.org/10.22105/jfea.2022.356442.1230

Abstract
  Thangaraj and Balasubramanian introduced the so-called somewhat fuzzy semicontinuous and somewhat fuzzy semiopen functions. Two years later, the same authors defined two other types of functions called somewhat fuzzy continuous and somewhat fuzzy open without indicating connections between them. At first ...  Read More

Intuitionistic fuzzy sets and their variants
Hybrid intelligent parameter tuning approach for COVID-19 time series modeling and prediction

Imo Jeremiah Eyo; Olufemi Sunday Adeoye; Udoinyang Godwin Inyang; Ini John Umoeka

Volume 3, Issue 1 , March 2022, , Pages 64-80

https://doi.org/10.22105/jfea.2021.309332.1164

Abstract
  A novel hybrid intelligent approach for tuning the parameters of Interval Type-2 Intuitionistic Fuzzy Logic System (IT2IFLS) is introduced for the modeling and prediction of coronavirus disease 2019 (COVID-19) time series. COVID-19 is known to be a virus caused by Severe Acute Respiratory Syndrome Coronavirus ...  Read More

Fuzzy sets and their variants
On algebraic aspects of η-fuzzy subgroups

Muhammad Waseem Asghar; Khushdil Ahmad

Volume 4, Issue 2 , June 2023, , Pages 65-80

https://doi.org/10.22105/jfea.2023.371356.1237

Abstract
  In this paper, we define the term " η-fuzzy subgroup" and show that every fuzzy subgroup is a η-fuzzy subgroup. We define some of the algebraic properties of the concept of η-fuzzy cosets. Furthermore, we initiate the study of the η-fuzzy normal subgroup and the quotient group with respect  to the ...  Read More

Fuzzy sets and their variants
Fuzzy logic in accounting and auditing

Mohsen Imeni

Volume 1, Issue 1 , March 2020, , Pages 66-72

https://doi.org/10.22105/jfea.2020.246647.1002

Abstract
  Many areas of accounting have highly ambiguous due to undefined and inaccurate terms. Many ambiguities are generated by the human mind. In the field of accounting, these ambiguities lead to the creation of uncertain information. Many of the targets and concepts of accounting with binary classification ...  Read More

Fuzzy sets and their variants
Evaluation and selection of supplier in supply chain with fuzzy analytical network process approach

Mohammad Ghasempoor Anaraki; Dmitriy S. Vladislav; Mahdi Karbasian; Natalja Osintsev; Victoria Nozick

Volume 2, Issue 1 , March 2021, , Pages 69-88

https://doi.org/10.22105/jfea.2021.274734.1078

Abstract
  One of the most important issues concerning the designing a supply chain is selecting the supplier. Selecting proper suppliers is one of the most crucial activities of an organization towards the gradual improvement and a promotion in performance. This intricacy is because suppliers fulfil a part of ...  Read More

Other
Efficiency study with undesirable inputs and outputs in DEA

Abbasali Monzeli; Behrouz Daneshian; Gasem Tohidi; Masud Sanei; Shabnam Razavian

Volume 1, Issue 1 , March 2020, , Pages 73-80

https://doi.org/10.22105/jfea.2020.248018.1005

Abstract
  Data Envelopment Analysis (DEA) is one of the well-known methods for calculating efficiency, determining efficient boundaries and evaluating efficiency that is used in specific input and output conditions. Traditional models of DEA do not try to reduce undesirable outputs and increase undesirable inputs. ...  Read More

Neutrosophic sets and their variants
Generalizations and alternatives of classical algebraic structures to neutroAlgebraic structures and antiAlgebraic structures

Florentin Smarandache

Volume 1, Issue 2 , June 2020, , Pages 81-83

https://doi.org/10.22105/jfea.2020.248816.1008

Abstract
  In this paper we present the development from paradoxism to neutrosophy, which gave birth to neutrosophic set and logic and especially to NeutroAlgebraic Structures (or NeutroAlgebras) and AntiAlgebraic Structures (or AntiAlgebras) that are generalizations and alternatives of the classical algebraic ...  Read More

Pythagorean fuzzy sets and their variants
How warehouse location decisions changed in medical sector after pandemic? a fuzzy comparative study

Tutku Tuncalı Yaman; Gonca Reyhan Akkartal

Volume 3, Issue 1 , March 2022, , Pages 81-95

https://doi.org/10.22105/jfea.2022.315262.1172

Abstract
  In the decision theory, there are many useful tools for operations in logistics and Supply Chain Management (SCM). One of the vital trivets of logistics operations is warehouse management which is also one of the parts of a supply chain. Deciding on the location of a warehouse has a critical issue especially ...  Read More

Cubic sets and their variants
A cubic set discussed in incline algebraic sub–structure

Surya Manokaran; Prakasam Muralikrishna; Seyyed Ahmad Edalatpanah; Ramin Goudarzi Karim

Volume 4, Issue 2 , June 2023, , Pages 81-91

https://doi.org/10.22105/jfea.2023.397221.1264

Abstract
  An effective and flexible method for encoding ambiguous data is using cubic sets. The concept of incline algebraic sub-structure is considered and is interlinked with the notation of the cubic set to define cubic subincline. The sense of cubic sub incline of algebra is established with relevant results. ...  Read More

Fuzzy sets and their variants
Analyzing the barriers of organizational transformation by using fuzzy SWARA

Iman Ghasemian Sahebi; Alireza Arab; Seyed Pendar Toufighi

Volume 1, Issue 2 , June 2020, , Pages 84-97

https://doi.org/10.22105/jfea.2020.249191.1010

Abstract
  The crucial role of bureaucracy in the economic, political, socio-cultural and political structures, and its impact in achieving the goals of organization is so important that in order to achieve the development, change directions consists of purifying and modernization of the administrative system in ...  Read More

Fuzzy sets and their variants
A simplified new approach for solving fully fuzzy transportation problems with involving triangular fuzzy numbers

Ladji Kane; Hamala Sidibe; Souleymane Kane; Hawa Bado; Moussa Konate; Daouda Diawara; Lassina Diabate

Volume 2, Issue 1 , March 2021, , Pages 89-105

https://doi.org/10.22105/jfea.2021.275280.1084

Abstract
  Transportation Problem (TP) is an important network structured linear programming problem that arises in several contexts and has deservedly received a great deal of attention in the literature. The central concept in this problem is to find the least total transportation cost of a commodity in order ...  Read More

Intuitionistic fuzzy sets and their variants
Intuitionistic fuzzy complex subgroups with respect to norms (T,S)

Rasul Rasuli

Volume 4, Issue 2 , June 2023, , Pages 92-114

https://doi.org/10.22105/jfea.2023.380561.1245

Abstract
  In our work in this paper, we define intuitionistic fuzzy complex subgroups with respect to t-norm T and s-norm S and investigate some properties of them in detail. Next, we obtain some results about them and give some relationships between them. Later, we introduce the inverse, composition, intersection ...  Read More

Plithogenic sets and their variants
Introduction to plithogenic sociogram with preference representations by plithogenic number

Nivetha Martin; Florentin Smarandache; R Priya

Volume 3, Issue 1 , March 2022, , Pages 96-108

https://doi.org/10.22105/jfea.2021.288057.1151

Abstract
  The theory of Plithogeny is gaining momentum in recent times as it generalizes the concepts of fuzzy, intuitionistic, neutrosophy and other extended representations of fuzzy sets. The relativity of the comprehensive and accommodative nature of plithogenic sets in dealing with attributes shall be applied ...  Read More

Fuzzy sets and their variants
Prediction of Pakistan super league-2020 using TOPSIS and fuzzy TOPSIS methods

Muhammad Naveed Jafar; Faizullah Khan; Amir Naveed

Volume 1, Issue 2 , June 2020, , Pages 98-107

https://doi.org/10.22105/jfea.2020.249363.1011

Abstract
  We lived in uncertain word and prediction in this uncertain word is a major issue. Prediction in cricket is very complex because there are many factors which are effecting on results. Weather, pitch, Conditions, Home grounds are some of these factors. In this article it is aimed to predict the results ...  Read More

Ordered structures and their variants
New characterization theorems of the mp-quantales

George Georgescu

Volume 2, Issue 2 , June 2021, , Pages 106-119

https://doi.org/10.22105/jfea.2021.279892.1090

Abstract
  The mp-quantales were introduced in a previous paper as an abstraction of the lattices of ideals in mp-rings and the lattices of ideals in conormal lattices. Several properties of m-rings and conormal lattices were generalized to mp-quantales. In this paper we shall prove new characterization theorems ...  Read More

Fuzzy sets and their variants
Application of fuzzy logic in portfolio management: evidence from Iranian researches

Meysam Kaviani; Seyed Fakhreddin Fakhrehosseini

Volume 1, Issue 2 , June 2020, , Pages 108-111

https://doi.org/10.22105/jfea.2020.249372.1012

Abstract
  Over the past decades, financial researchers have proposed different methods in portfolio selection, so that, Markwotiz [1] introduced risk and return criteria for a portfolio selection. Since it is difficult how to select an adequate stock portfolio, fuzzy models have been able to help researchers by ...  Read More

Fuzzy sets and their variants
Prediction of human behavior with TOPSIS

Taraneh Javanbakht; Shivanjan Chakravorty

Volume 3, Issue 2 , June 2022, , Pages 109-125

https://doi.org/10.22105/jfea.2022.326185.1197

Abstract
  The present paper proposes a new application of the prediction of human behavior using TOPSIS as an appropriate tool for data optimization. Our hypothesis was that the analysis of the candidates with this method was influenced by the change of their behavior. We found that the behavior change could occur ...  Read More

Soft sets and their variants
A new decision making approach for winning strategy based on muti soft set logic

Renukadevi Vellapandi; Sangeetha Gunasekaran

Volume 1, Issue 2 , June 2020, , Pages 112-121

https://doi.org/10.22105/jfea.2020.249373.1013

Abstract
  We introduce a new concept of certainty and coverage of a parameter of the soft set and present a new decision making approach for the soft set over the universe using the certainty of a parameter. Also, we point out the drawbacks of the reduct definition by pointing out the delusion of Proposition 14 ...  Read More

Picture fuzzy sets and their variants
Picture fuzzy semi-prime ideals

Amal Kumar Adak; Manish Kumar Gunjan; Niwan Kumar Agarwal

Volume 4, Issue 2 , June 2023, , Pages 115-124

https://doi.org/10.22105/jfea.2023.395704.1261

Abstract
  Picture Fuzzy Sets (PFSs) are expanded to include Intuitionistic Fuzzy Sets (IFSs), with the extra advantage of avoiding underlying limitations. PFS based models may be adequate in situations when we face opinions involving more answer of types: yes, abstain and no. In this paper, the concepts of semi-prime ...  Read More

Fuzzy sets and their variants
Regular T_0 ‐type Separations in Fuzzy Topological Spaces in the Sense of Quasi‐coincidence

Gurusamy Saravanakumar; S. Tamilselvan; A. Vadivel

Volume 2, Issue 2 , June 2021, , Pages 120-129

https://doi.org/10.22105/jfea.2021.275958.1085

Abstract
  In this paper, we introduce and study three notions of  property in fuzzy topological spaces using quasi-coincidence sense, and we relate to other such notions. Then, we show that all these notions satisfy good extension property. These concepts also satisfy hereditary, productive and projective ...  Read More

Intuitionistic fuzzy sets and their variants
Medical diagnostic analysis on some selected patients based on modified Thao et al.’s correlation coefficient of intuitionistic fuzzy sets via an algorithmic approach

Paul Augustine Ejegwa; Idoko Charles Onyeke

Volume 1, Issue 2 , June 2020, , Pages 122-132

https://doi.org/10.22105/jfea.2020.250108.1014

Abstract
  The concept of correlation coefficient of intuitionistic fuzzy sets is a reliable tool in information theory with numerous applications in diverse areas. Correlation coefficients of intuitionistic fuzzy sets have been studied through two-way approach by many researchers. This approach inappropriately ...  Read More