BP神经网络训练以及检验，得到结果与设定值的误差，训练数据越多结果会越好。PS:为了获得更好的效果，请先用PCA或线性回归等方法对学习数据进行预处理。-BP neural network training and testing, the results obtained with the set value of the error, the more training data results will be better. PS: In order to obtain better res