Two-Objective Optimization Model for Discrete Emergent Supply System

According to the characteristics of the emergency problem,a model based on two objectives,the earliest emergencystarttime andthe fewest number of retrieval depots,are presented when both the pressure of time limit and the reliability of the system are considered. Using the theory of fuzzy sets,a fuzzy decisionmaking set is defined and a fuzzy optimization method is successfully applied to solve this problem.