对于入门级bp神经网络的基本操作理解，由于涉密，数据不是完整数据，隐含层为单层，节点书根据自己的情况进行设置-

For entry-level understanding of the basic operation of bp neural network, due to the secret, the data is not complete data, the hidden layer is a single layer, nodes books according to their own set of circumstances