基于区间模糊DEMATEL和TOPSIS法的产品方案评价

针对目前产品方案评价方法存在的不足，提出一种基于区间模糊理论的多属性决策模型，该模型结合DEMATEL 法和TOPSIS算法，采用区间模糊理论表达信息的不确定性：由DEMATEL方法对产品方案评价系统中的评价指标进行 量化分析，对指标集进行因果分类、重要度排序和权重分配；在TOPSIS框架下构建区间模糊矩阵，计算其正、负理想解和 接近度，根据接近度对产品备选方案进行比较，并进行了实例分析。结果表明，该评价方法和理论具有一定的实用性和 可行性。

Product Concept Evaluation Based on Interval Fuzzy DEMATEL and TOPSIS

For the insufficient of product concept evaluation means.a multi-criteria decision making model based on interval fuzzy sets was put forward by integrating DEMATEL and TOPSIS methods.in which the uncertain information was expressed with interval fuzzy number. The relationship between evaluation criteria was analyzed using the DEMATEL method.which not only revealed causal relationship between criteria. but also carried out the causal classification. importance ranking and weights assignment. Then.interval fuzzy matrix was constructed in the TOPSIS framework. The positive ideal solution,negative ideal solution and proximity were calculated. The rank of product program was made by comparing the proximity. At last.an example was discussed to validate the practicability and feasibility of the established methods and theory. Results show that this evaluation method and theory have a certain practicality and feasibility.