径流预报常用的几种模型：AR模型，BP模型，RBF模型，GM(1,N)模型；预报数据预处理方法：自相关函数以及偏自相关函数确定法；EMD方法-Several commonly used runoff forecasting model: AR model, BP model, RBF model, GM (1, N) model　forecast data preprocessing methods: autocorrelation function and partial autocorrelation function to determine the law　EMD Method