覆盖粗糙近似算子

Covering Rough Approximation Operator

首先给出了模糊集的覆盖上、下近似算子的定义,讨论了它们的简单性质.其次,覆盖近似空间中,由于覆盖粗糙不等式在进行并、交运算时会使信息丢失,因而讨论了覆盖粗糙不等式取等号的充分条件.

Firstly,the lower and upper covering approximation operator on a fuzzy set are defined and their basic properties examined.Secondly,since loss of information occurs in union and intersection operations of a covering rough inequality,so the sufficient condition that makes a covering rough inequality an equality is investigated in the covering approximation space.