2018 Volume 3 Issue 2 Supplementary
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OBTAINING EFFICIENT SOLUTIONS FOR FUZZY MULTI-OBJECTIVE TRANSPORTATION PROBLEMS BY IMPLEMENTING Α-CUT SET


Abouzar SHEIKHI, Sayed Mehdi KARBASSI*, Narges BIDABADI
Abstract

The goal of linear programming problems is to minimize costs or maximize profits‎, ‎but in general‎, ‎problems that are formulated in reality are multi-objective‎, ‎and these goals are often measured at different scales and are incompatible with each other‎. ‎In practice‎, ‎the ideal solution to a multi-objective problem is impossible in most cases‎. ‎When the goals of the problem are in conflict‎, ‎such solutions cannot be achieved‎. ‎For this purpose‎, ‎instead of the ideal solution‎, ‎the concept of the correct solution is introduced‎.In this paper, we introduce a method for solving fuzzy multi-objective transportation problems where the cost coefficients of the objective functions, suppliers and demands are expressed as fuzzy numbers. The fuzzy multi-objective transportation problem is transformed into multi-objective interval transportation problem by using α-cut set of a fuzzy number.  The multi-objective interval transportation problem is converted into several single objective interval transportation problems and are solved by separation method. Then efficient solutions are obtained by interactive procedure. A numerical example is presented to illustrate the efficiency of the method.


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