摘要
决策表信息系统核属性的计算是粗集理论中的一个重要问题。从知识约简及核属性的定义出发,详细分析了文献[5]中的方法用于不相容决策信息系统中产生错误原因,并提出了一个新的基于等价类运算计算核属性的方法,该方法的优点在于同时适用相容决策表及不相容决策表核计算,且计算核属性不需要生成分明矩阵的中间步骤,最后证明了这种方法的有效性。
The core plays an important role in attributes reduction of decision information system based on rough sets. From knowledge reduction and core definition, cause of incorrectness which the method of calculating core used in inconsistence decision system in literatttre [5] is analyzed in detail. A model of calculating core attributes is proposed in decision table information system based on equivalence classes operation. The advantage of this model is that core calculating don＇t need build discernible matrix. The correctness of this method is proved.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第22期4340-4342,共3页
Computer Engineering and Design
关键词
粗集
决策表信息系统
分明矩阵
核
知识约简
rough sets
decision table information system
discernible matrix
core
knowledge reduction
