Figure 2.

The specific structure of the NN model. (a) The overall structure of the NN model. (b) The calculation process of the first layer of the hidden layer and (c) the calculation process of the second layer of the hidden layer.

The specific structure of the NN model. (a) The overall structure of the NN model. (b) The calculation process of the first layer of the hidden layer and (c) the calculation process of the second layer of the hidden layer.