中文说明：
该文件主要包含了两个利用Matlab做的BP算法，主要用来实现预测，该文件中包含两个网络，一个是普通BP神经网络，一个为双隐含层BP神经网络。
English Description：
The file mainly contains two BP algorithms using MATLAB, which are mainly used to realize prediction. The file contains two networks, one is ordinary BP neural network, the other is double hidden layer BP neural network.