作者针对已有的利用差别矩阵来求粗糙集中核的方法存在的不足,将粗糙集的代数观与信息观结合起来研究,给出一个新的差别矩阵的定义和求核方法.
An improved discernibility matrix definition together with a method for computing the core is introduced. By putting together with information view and the algebra view of rough set, the authors present a new discernibility matrix definition and a method for the computation of the core.