摘要
对 Rough集定义进行了拓广 ,通过将拓广的定义与传统的 Rough集定义的比较分析证明了拓广是有意义。
This paper proposes a new definition of lower and upper approximations which are basic concepts of rough set theory. The new definitions are compared to the classical definitions and its signification in the theory and values of applications in the practice are proven.
出处
《计算机与现代化》
2000年第1期37-41,共5页
Computer and Modernization
关键词
等价关系
相似性关系
ROUGH集
rough sets
upper and low approximations
indiscernibility relation
equivalence relation
similarity relation
