基于信息熵的Rough集粗糙性度量新方法  

New Method for Measuring the Roughness of Rough Set Based on Entropy Theory

作　　者：胡晓东[1] 王伟平[1] 

机构地区：[1]北京理工大学管理与经济学院,北京100081

出　　处：《科学技术与工程》2008年第4期859-861,876,共4页Science Technology and Engineering

摘　　要：基于等价关系和一般二元关系,通过引入Rough集边界熵概念,利用Rough集边界的知识粗糙性和Rough集本身的粗糙度来刻画Rough集粗糙性,为Rough集粗糙性提供了一种更为合理的度量方法,为Rough集中概念的获取和刻画提供了理论依据。Based on equivalence ,relationship and ordinary dualistic relationship, by introducing the notion of boundary entropy of the rough set, boundary knowledge roughness and the rough set＇s own rough degree to describe the roughness of the rough set is used o A more reasonable measuring method for the roughness of the rough set is given, and a theoretic base to describe and acquire concepts from the rough set is provided.

关 键 词：ROUGH集 知识粗糙熵 Rough集粗糙熵 

分 类 号：O144.5[理学—数学] O236[理学—基础数学]