Knowledge discovery for customer classification on the principle of maximum profit

It is one of the most important strategies to make management according to the classification of customers. A new method to classify customers is presented in this paper. Firstly we try to find the key background information by simplifying the decision table based on the rough set theory; secondly we get to know the profit by analyzing the sale and the cost of customers; and finally, we get the decision rules on the principle of maximum profit. As such, we could reason out to which class that a new customer belongs and select a good way to serve him, thus achieving the optimal economic benefit for enterprises.