How to obtain the prediction output of bp neural network training set

The prediction of bp neural network training set uses the relevant data in attachment 1 to predict the price adjustment ratio in attachment 2, so the data in attachment 1 is used as the training set and test set of BP. After training the model, just input the data in Annex 2 into BP.

BP network, also known as back propagation neural network, continuously corrects the network weights and thresholds by training the sample data, so that the error function decreases along the negative gradient direction.