摘要
主要借助依赖空间,定义了一种新的一致关系,讨论了信息系统的属性约简问题,给出了划分协调集和不可辨识属性集之间的关系以及划分协调集的等价条件.针对决策信息系统,通过改进一致关系,主要给出了不协调的决策信息系统的分布协调集与分布不可辨识属性集之间的关系以及分布协调集的等价条件。
Based on dependerce space, a new congrueffce relation is- defined in this paper, and the attribute reduction of information system is discussed, the relationship between the division of consistent sets and indiscernibility attribute sets and the equivalent conditions oI the classification of consistent sets are obtained. For decision information system, through the improvement of congruence relation, the relationship between the division of consistent sets and indiscernibility attribute sets and the equivalent conditions of the classification of consistent sets are also examined in inconsistent decision information system
出处
《红河学院学报》
2012年第2期26-28,共3页
Journal of Honghe University
基金
云南省教育厅科研基金项目(2011Y297)
关键词
一致关系
依赖空间
闭算子
属性约简
congruence relation
dependence space
closed operator
attribute reduction
