10.4 Multilayer Neural Network

First hidden layer for $k=1,...,K_{1}$

$$A_{k}^{(1)}=h_k^{1}(X)$$

Second hidden layer for $l=1,...,K_2$

$$A_{k}^{(2)}=h_k^{2}(X)$$

Figure 10.5: Multilayer Neural Network - Chap 10