There has been four kinds of main early warning models of exchange crisis at present, namely "signal" approach, probit model, cross-county regression model and subjective probability method.

目前已经出现了四种主要的外汇危机预警模型，即信号方法、概率单位方法、截面回归方法以及主观概率法。

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To study influence factors of customer complaint, binary choice Probit model and binary choice Logit model of customer complaint are built, and two numerical examples are given, respectively.

对顾客抱怨的影响因素进行研究，分别构建了顾客抱怨的二元选择Logit、Probit模型，并给出了两个实例。

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