关键词: 方案评价, VIKOR算法, 直觉模糊集, 区间数, 多属性决策

Abstract: Aiming at the shortcomings of current product scheme evaluation methods, a multi-attribute decision model based on intuitionistic fuzzy sets was put forward by integrating Decision Making Trial and Evaluation Laboratory (DEMATEL) and MCDM algorithm, in which the uncertain information was expressed by intuitionistic fuzzy theory. Splitting matrix method was introduced to maintain the fuzzy characteristics for total-influence matrix based on traditional DEMATEL method, and the evaluation criteria in product scheme evaluation system was analyzed quantized by using improved DEMATEL method. The analysis results were presented in visual form, and the quantized causal relationship among criteria was presented. Besides, the criteria set was assigned on causal classification, importance ranking and weights assignment according to quantized result. The definitions of positive-ideal solution and negative-solution in VIKOR method were improved. With the compromise planning as core, the optimum alternative sequence of a compromise between maximum "group utility" and minimum "individual regret" was provided, and the compromise solution which closed to ideal solution was obtained. The proposed model was applied to screw-type injection molding machine to verify the feasibility and effectiveness of the method.

Key words: product concept evaluation, VIKOR method, intuitionistic fuzzy set, interval number, multi-criteria decision making, product development