Operations Research
Toward characterizing solutions to complex programming problems involving fuzzy parameters in constraints

Hamiden Abd El-Wahed Khalifa; Dragan Pamučar; Seyyed Ahmad Edalatpanah

Volume 13, Issue 1 , March 2024, , Pages 62-70

https://doi.org/10.22105/riej.2024.447897.1427

Abstract
  The current study investigates to characterize the Complex Programming Problem (CPP) solution in a fuzzy environment. The paper is divided into two parts: 1) the first presents a Fuzzy Complex Programming Problem (F-CPP) with fuzzy complex constraints, and 2) the second presents the optimality criteria ...  Read More

Fuzzy optimization
Solving semi-fully fuzzy linear programming problems

Ladji Kane; Hawa Bado; Moctar Diakite; Moussa Konate; Souleymane Kane; Koura Traore

Volume 10, Issue 3 , September 2021, , Pages 251-275

https://doi.org/10.22105/riej.2021.302364.1242

Abstract
  The aim of this paper is to introduce a new technique for improve the methods for solving the Semi-fully Fuzzy Linear Programming Problems. An algorithm is proposed to find the fuzzy optimal solution of Semi-fully Fuzzy Linear Programming Problems. This technique is also best fuzzy optimal solution in ...  Read More

Banking industry
A new method for solving fuzzy linear fractional programming problem with new ranking function

S. Kumar-Das

Volume 8, Issue 4 , December 2019, , Pages 384-393

https://doi.org/10.22105/riej.2020.220850.1123

Abstract
  Because of uncertainty in the real life applications, reaching to the optimal solution is always time consuming and even sometimes impossible. In order to overcome these limitations the fuzzy set theory is introduced to handle it but not only incomplete information but also indeterminate and inconsistent ...  Read More

Game theory
On solving two-person zero-sum fuzzy matrix games via linear programming approach

H. A. Khalifa

Volume 8, Issue 1 , April 2019, , Pages 17-27

https://doi.org/10.22105/riej.2019.170067.1075

Abstract
  In this paper, a two-person zero-sum matrix game with fuzzy numbers payoff is introduced. Using the fuzzy number comparison introduced by Rouben's method (1991), the fuzzy payoff is converted into the corresponding deterministic payoff. Then, for each player, a linear programming problem is formulated. ...  Read More