基于限制容差关系的不完备信息系统粗集模型拓展

The Extension of Rough Set Model Based on Limited Tolerance Relation under Incomplete Information System

本文在分析了已有的不完备信息系统粗集扩展模型,针对王国胤的限制容量模型存在条件限制宽松和严格的不足,对原有模型加以改造,通过实例比较,验证其更具有实用性,在划分容差类时更具合理性有效性.

Existing extensions of rough set model are analyzed in this paper under incomplete information system. This paper modifies limited tolerance model proposed by Wang Guoyin as far as the limitation on relaxation and restriction of condition constraint is concerned. Compared by example, the modified model based on limited tolerance model shows that it is more applicable, reasonable and effective when the universe of discourse is partitioned into tolerance classifications.