基于依赖空间的信息系统属性约简

摘要

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%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。