A METHOD FOR SOLVING BILEVEL LINEAR PROGRAMMING PROBLEM WITH INTUITIONISTIC FUZZY PARAMETERS

In many optimization problems, all decision-makers are not on the same level, but decision-makers may be placed in a hierarchical structure.‏ ‎Also, it is possible that the parameters of the problem are not stated crisp, but are presented in different types of fuzzy or interval. ‎In this study‎, ‎we considered ‎two‎ ‎‎‎state of the bilevel linear programming problems with ambiguity uncertainty.‎‏‎ In one of the problems, ‎all‎ the parameters were trapezoidal intuitionistic fuzzy numbers, and in the other, ‎all‎ the parameters were triangular intuitionistic fuzzy numbers. By using the proposed ranking method, we obtain the ‎‎‎bilevel linear programming problem corresponding to each state, which is solved by the usual methods.