A new method for intuitionistic fuzzy multi-objective linear fractional optimization problem and its application in agricultural land allocation problem

This paper presents a new method for solving an intuitionistic fuzzy multi-objective linear fractional optimization (IFMOLFO) problem with crisp and intuitionistic fuzzy constraints. Here, all uncertain parameters are represented as triangular intuitionistic fuzzy numbers. We used an accuracy ranking function and variable transformation in the proposed method to convert an IFMOLFO problem into a crisp multi-objective linear optimization problem. Then, we formulated the first phase of the weighted intuitionistic fuzzy goal programming (WIFGP) model to obtain an intuitionistic fuzzy non-dominant (IFND) solution for the IFMOLFO problem. Several strategies for obtaining an IFND solution to the IFMOLFO prob-lem have been proposed in the literature. However, in addition to constructing the phase-I WIFGP model, this study shows that the IFND solution may not be Pareto-optimal when some of the under-deviation variables are zero. As a result, the second phase of the WIFGP model is applied to address this issue. The benefits of both models are merged to provide a novel method, unlike any other method in the literature, for producing optimal solutions that satisfy both IFND and Pareto-optimal requirements. The suggested algo-rithm's efficiency and reliability are demonstrated by addressing a real-life case study of an agricultural production planning problem and followed by solving a numerical example from literature.(c) 2023 Elsevier Inc. All rights reserved.

Automated summary

This paper proposes a new method for solving an intuitionistic fuzzy multi-objective linear fractional optimization problem with crisp and intuitionistic fuzzy constraints. The method converts the problem into a crisp multi-objective linear optimization problem using an accuracy ranking function and variable transformation. It then formulates a weighted intuitionistic fuzzy goal programming model to obtain an intuitionistic fuzzy non-dominant solution. Additionally, the study addresses the issue of the IFND solution not being Pareto-optimal when some under-deviation variables are zero by applying a second phase of the WIFGP model.