摘要
本文针对Hu方法存在的问题,提出了一种改进的可区分矩阵与求核方法,并证明了该方法的正确性。该方法不仅克服了Hu方法的不足,而且指出了Hu方法出错的根本原因。
With the problem of the Hu's method, an improved discernibility matrix and the computation of the core is put forward in this paper, and the correctness of this method is proved. This method not only overcomes the drawbacks of the Hu's method, but also reveals the basic reason of error oecuring in the Hu's method.
出处
《计算机工程与科学》
CSCD
北大核心
2009年第2期53-55,共3页
Computer Engineering & Science
基金
山东省教育厅科技资助项目(J03P52)
德州市科技攻关资助项目(20070141)
关键词
粗糙集
上近似集
下近似集
属性核
rough set
upper approximation set
lower approximation set
attribute core