this model is based on the multiple attribute utility theory, the artificial intelligence, the fuzzy set theory and the decision analysis theory . in order to build this model the concept and inductive method of objective utility is used as well as a comprehensive analysis method on determining the coefficients is introduced 该模型的建立以多属性效用理论、模糊集理论和决策分析的有关理论为依据,使用了目标效用的概念及其归纳方法、复式效用模型和一种较为新颖的权重系数综合分析方法,并综合了专家调查意见。