【摘要】 基于相容关系把多数包含关系引入不完备信息系统,对容差关系进行了扩充,使之更具有灵活性,在此基础上提出一种能容忍数据中包含噪声的变精度区分矩阵,给出了基于该变精度区分矩阵的一种有效属性约简算法,并通过具体实例验证了该算法.更多还原

【Abstract】 The majority of inclusion relations are introduced into incomplete information systems based on the tolerance relation.The tolerance relation is made more flexible.Furthermore,we prepose a new version of discernibility matrix,called variable precision discernibility matrix,which can tolerate the noise of information.In addition,a reduction algorithm is also presented on the basis of variable precision discernibility matrix.Finally,the validity of this new algorithm is verified by an example.更多还原