关键词: Vague集, Fuzzy集, 隶属函数, 转化方法

Abstract: This paper points out some problems of existing methods of transforming vague sets into fuzzy sets, and gives out some constraint criterions which are satisfied by the method of transforming vague sets into fuzzy sets, and puts forward a new method of transforming vague sets into fuzzy sets, shows that this method is more reasonable than other existing methods by some instances.

Key words: vague sets, fuzzy sets, membership function, transformation method