In this paper,a novel rough set model based on concordance relation is presented,which relaxing the indiscernibility and tolerance between objects on the basis of classical and tolerant rough sets.

• 首先在传统的粗糙集模型基础上,通过松弛对象之间的不可分辨和相容性条件,给出了一种基于和谐关系的扩展粗糙集模型;