模糊粗糙集及其截集

Some Notes on Fuzzy-Rough Sets

设U为全集 R是U上的一个等价关系,A为U上的模糊集 本文给出了A的λ-截集及强λ-截集的上(下)近似Aλ(Aλ)及Asλ)的若干性质,同时给出了A的上(下)

Let U be the Universal set and Ran equivalence relation on U.A an fuzzy on U. In this paper we investigate the upper(down) approximation of the λ-cut set and the strong λ-cut set Aλ(Aλ) and Asλ(Asλ) of A. The relationship between the upper(down)approximation of A and its λ-cut sets is explored.