一、引言一般情况下,只有在财务指标中包含了足够的预警信息,才能通过预警模型实现正确预警,而财务指标中是否包含足够的预警信息却很难确定。为了提高预警准确率,总是最大限度地提取财务指标信息,结果不仅使财务指标维数增大,而且其中可能存在较大的相关性和冗余,因而选择合适的财务指标来描述预警模型对预测的精度、需要的训练时间和需要的实例等 I. INTRODUCTION Under normal circumstances, only if the financial indicators contain enough early warning information to get the correct warning through the early warning model, it is hard to determine whether the financial indicators contain enough early warning information. In order to improve the accuracy of early warning, information of financial indicators is always extracted to the maximum extent. As a result, not only the dimension of financial indicators increases, but also there may be greater correlation and redundancy. Therefore, the appropriate financial indicators are selected to describe the early warning model pairs Forecast accuracy, training time needed and examples needed