This paper introduces the basic ideas and basic issues of GrC,as well as three main GrC models:fuzzy set,rough set and quotient space.After that,the applications of GrC in data mining are discussed.

• 本文首先简要地介绍了粒度计算的基本思想、基本问题以及它的三个主要模型(模糊集、粗糙集和商空间),然后综述了粒度计算在数据挖掘中的应用。