This paper discusses the relationship between the reduction of attributes and set covering by constructing the relation matrix and then gives several theorems to interpret this relationship.

• 论文探讨了粗糙集的属性约简和集合覆盖问题之间的联系。 通过构造信息系统的相关矩阵将粗糙集的属性约简问题与集合覆盖问题联系起来,从而将粗糙集的属性约简问题简化为集合覆盖问题。