双论域上粗糙近似算子的构造性方法与公理化方法

Constructive and Algebraic Methods of Approximation Operators over Two Universes

文献[1]在单论域U上,利用论域U上的二元关系,给出了粗糙集理论的构造性方法和公理化方法.本文将这两种方法推广到两个论域上的粗糙集,利用两个论域U和V之间的二元关系,研究双论域上粗糙集理论的构造性方法和公理化方法,推广了文献[1]的结论。

Constructive and axiomatic approaches of the theory of rough sets were developed in paper [1], and they were studied by using the binary relation over singleton universes U. This paper generalize two methods to the rough sets over two universes when using the binary relation between universes U and V, it is a generalization of the conclusion in literature [1].