A Class of Multi-objective Inventory Model with Bifuzzy Coefficients and Its Application

In this paper, we concentrate on discussing the inventory problem under bifuzzy environment and develop a class of multi-objective inventory model with bifuzzy coefficients. We give the bifuzzy transform operarion and prove the method of solving satisfied solution of multi-objective inventory model. These are applied to a practical inventory problem in which all inventory costs, purchasing and selling prices in the objectives and constraints are assumed to be bifuzzy in nature. The impreciseness in the above objectives and constraints are transformed into fuzzy variables which are similar trapezoidal fuzzy numbers. The exact parameters of fuzzy membership functions can be obtained through past observations. Then we compare the results with that from the fuzzy multi-objective model. The proposed model and algorithm, which will be of much use of the management, provide significant solutions to construct other inventory models with bifuzzy variables in real-life.