Telecom operators are facing an urgent problem of telecom customer churn that should be solved as soon as possible. This paper, according to the three-month average customer consumption, di-vides the levels of customer value, comprehensively uses decision tree algorithm and clustering algorithm modeling of data mining, introduces confusion matrix model for model evaluation, and uses the model output rules set for targeted customers’ maintaining marketing, so as to reduce customer churn, improve the efficiency of marketing, and enhance the core competitiveness of telecom operators in 3G environment.
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