On the alterability of rule [data mining]

The alterability of rule is studied in this paper. Two ways are put forward: one is applying the technology of data mining to get it, here the theory of rough set and flow graph are mainly used, and the other is estimating it by the experience, so impedance and attractive functions are mentioned, and two types of optimized models are put forward. These ways can enrich the theory of data mining and help people get more acknowledge and use it to facilitate decision making.