摘要
对CS(K)(概念格)上的概念结点进行等价类划分,分析了概念格的粗集特征和S-粗集特征,给出了概念格上粗集和S-粗集的定义及其相应定理,找出概念格与粗集、S-粗集之间的关系,并通过实例说明了CS(K)上的S-粗集特征.
According to the equivalence class, the concept nodes of CS（K） （Concept Lattice） are partitioned. The characteristics of rough sets and S-rough sets are analyzed. The definitions of rough sets and S-rough sets on CS（K） are given and the related theorem is presented. The relation between the concept lattice and S-rough sets is found. At last, the characteristics of S-rough sets are illnstrated with an example.
出处
《山东大学学报（理学版）》
CAS
CSCD
北大核心
2006年第2期18-23,共6页
Journal of Shandong University(Natural Science)
关键词
S-粗集
概念格
f-扩张
f-萎缩
S-rough sets
concept lattice
f-dilation
f^--reduction
