多粒度模糊粗糙集的表示与相应的信任结构

摘要

利用多粒度粗糙集的上、下近似及其性质,结合模糊集的分解定理,研究多粒度模糊粗糙集的上、下近似的表示及性质,根据多粒度模糊粗糙集的上、下近似构造信任函数与似然函数.%By using the upper and lower approximations and the properties of the multi-granularity rough sets, and combining with fuzzy sets decomposition theorem, the representation and properties of upper and lower approximations of multi-granularity fuzzy rough sets are studied. Based on the upper and lower approximations of fuzzy rough sets, the belief function and the probability function are constructed.