This paper present a model of data mining based on rough set, from apply various reductive level algorithms on practical data to elicit information set, and get a rules set eventually.

• 本文提出一种基于粗糙集理论的数据挖掘模型，从实际数据出发，运用不同简化层次的算法，导出每个层次上的信息集，最后得到规则集。