A subsystem that learns a churn predictive model and construct a policy model from the analysis of churner attributes . the policy model is used to support automatic recommendation of retention policy :可以从客户的往来记录中，建构出预测客户流失行为的模型，接著分析流失客户的属性关系，建立出不同流失原因之族群，最后再依该分析建构对应的客户保留策略推荐机制。
