Function derivative_b2

ann_class2/mlp.py:28–29

(T, Y)

    return Z.T.dot(Y - T)

def derivative_b2(T, Y):
    return (Y - T).sum(axis=0)

def derivative_w1(X, Z, T, Y, W2):
    # return X.T.dot( ( ( Y-T ).dot(W2.T) * ( Z*(1 - Z) ) ) ) # for sigmoid