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1·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。

2·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。