摘要
用概率信息系统表示对象与属性值之间的概率关系.在概率信息系统的属性集上定义一种等价关系,该等价关系将概率信息系统分为协调和不协调的2大类,基于这种等价关系重点研究了概率信息系统以及协调概率信息系统的约简,同时讨论了可辨识属性矩阵与约简的相互关系,并通过实例加以验证.
A probabilistic information system is used to express the probabilistic relationship between objects and attributes. ProbabiIistic information systems are divided into two main classes by an equivalence relation which is defined on the attribute set of probabilistic information systems. Based on this equivalence relation, the reduction and discernibility matrix of consistent information systems are obtained, and their properties and the relations between them are also discussed. Finally, examples are used to verified this theory.
出处
《河北师范大学学报（自然科学版）》
CAS
北大核心
2009年第6期724-729,共6页
Journal of Hebei Normal University：Natural Science
基金
国家自然科学基金(60773174
60963006)
关键词
概率信息系统
可辨识属性矩阵
属性约简
等价关系
核心
probabilistic information system
discernibility matrix
attribute reduction
equivalence relation
core
