BP神经网络预测代码，可以较好的预测，希望有所帮助。-BP neural network code, can better predict, hope helpful.

ELMAN神经网络模型预测精度高于BP神经网络，可以用于非线性时间序列的预测。(The prediction accuracy of ELMAN neural network model is higher than that of BP neural network, and it can be used to predict nonlinear time series.)