摘要
论文从拓扑学角度研究覆盖近似空间(U,C),提出了加细覆盖的概念,讨论了加细覆盖近似空间的约简问题;同时给出了对定义在加细覆盖近似空间上的模糊集进行上、下近似计算的一种计算方法,并讨论该算法的一些性质。
In this paper,from the point of topological view,subsets of covering approximation space(U,C) are studied in deep.And the concept of fine covering is presented,topological structure and miminum reduction of fine covering approximation space are studied.A algorithm for upper-and-low approximation sets of a fuzzy set defined on the refined covering approximation space are presented,some properties of the algorithm are also examined.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第14期86-88,共3页
Computer Engineering and Applications
基金
国家自然科学基金资助项目(编号:60474072)
广东省自然科学基金资助项目(编号:04009465)
关键词
广义粗集
最小描述元
加细覆盖
模糊集
generalized rough set,minimum description element,refined covering,fuzzy set