The Searching of Decision Tree Based on Data Mining

With the promotion of information technology in various fields, the amount of data grow crazily, how to find what we need in the information ocean is a problem to be solved, and the data mining technology has made the issue to be resolved. This paper introduced the data mining knowledge briefly, for example: set theory, decision tree, clustering and association rules, artificial neural network, genetic algorithm and so on, then analysis the method of decision tree in detail by example.