摘要
规则提取是RST中一个重要的研究方向,本文提出了不完备信息系统的相对正域的概念,通过简单的集合运算就可以求得相对正域;利用相对正域选择决策树的结点,构造一棵决策树,完成对不完备信息系统的规则提取。
An important part in rough set theory is rule mining. In this paper,a method of mining rules from incomplete information systems based on the relative positive region is put forward. It can select nodes by calculating the relative positive region,and mining rules by the operation of set.
出处
《计算机工程与科学》
CSCD
2007年第10期68-69,100,共3页
Computer Engineering & Science
关键词
不完备信息系统
约简
规则提取
决策树
incomplete information system
reduction
rule mining
decision tree
