模糊决策信息系统上精度约简与规则提取

Precision Reduction and Extracting Rules in Fuzzy Decision-making Information System

基于模糊决策信息系统,借助于模糊相容关系,寻找各属性的相容类,将模糊信息系统转化为模糊目标信息系统,再通过区分矩阵对基于模糊相容类的粗糙模糊集的上、下近似分别进行精度约简,最后提取规则并对规则进行优化。

Based on the fuzzy decision-making information system,fuzzy compatibility relation was used to look for each attribute of the compatibility.Thus the fuzzy information system was changed into the target fuzzy information system.Again,matrix was identified and the rough fuzzy sets of compatibility of both the upper approximation and the lower one were brought into precision reduction respectively.Finally,rules were both extracted and optimized herein.