摘要
将双向S-粗集上的近似算子推广为程度近似算子,定义了新的近似算子和近似集合,给出了近似算子和近似集合的性质定理,扩大了S-粗集理论的应用范围.
This paper spreads the approximate operator on the two-way S-rough sets to graded approximate operator, defines the new approximate operators and approximate sets, gives qualitative theorem of approximate operators and approximate sets, and extends the applied area of S-rough sets theory.
出处
《天中学刊》
2006年第2期9-12,共4页
Journal of Tianzhong
基金
河南省自然科学基金资助项目(0511012700)
关键词
S-粗集
双向S-粗集
一般二元关系
程度近似算子
程度近似集合
S-rough sets
two-way S-rough sets
general binary relation
graded approximate operator
graded approximate sets
