计算机工程与应用2009，Vol.45Issue(21)：160-162,3.DOI:10.3778/j.issn.1002-8331.2009.21.047
知识粗糙性和条件信息熵的关系
Relationship between roughness of knowledge and conditional information entropy
摘要
Abstract
At present,there are two views in rough set theory.They are algebra view and information view.The roughness of knowledge embodies the granularity of knowledge in algebra view,Two concepts are defined in information view,which are infor-mation entropy of knowledge and conditional information entropy of knowledge.Theorem has been proved that information entropy and roughness of knowledge have corresponding relationships.It establishes the link between algebra view and information view, but they are not one-to-one relationships.By re-prove the theorem on the relationship between information entropy and roughness of knowledge,this paper finds that it is conditional information entropy which exists one-to-one relationship with roughness of knowledge.Then several related theorems are given and proved.关键词
知识粗糙性/信息熵/条件信息熵Key words
roughness of knowledge/information entropy/conditional information entropy分类
信息技术与安全科学引用本文复制引用
陈凤娟,闫德勤..知识粗糙性和条件信息熵的关系[J].计算机工程与应用,2009,45(21):160-162,3.基金项目
辽宁省教育厅高等学校科学研究基金(No.2008344) （No.2008344）
大连市科技局科技计划项目(No.2007A10GX117). （No.2007A10GX117）
