关键词: 粗糙集 不完备信息系统 限制非对称相似关系 规则获取

Abstract: The incompleteness of information about objects may be the greatest obstruct to performing induction learning from example. In this paper, the concept of limited non-symmetric similarity relation is defined and then classical discernibility matrix is exte

Key words: Rough sets, Incomplete information systems, Limited non-symmetric similarity relation, Rule extraction