01_week4_quiz

Key concepts on Deep Neural Networks

2。第 2 个问题

Among the following, which ones are "hyperparameters"? (Check all that apply.)

learning rate α

number of iterations

size of the hidden layers n[l]

bias vectors b[l]

number of layers L

weight matrices W[l]

activation values a[l]

answer:(A,B,C,E)     (超参是指影响参数w,b之类的其他参数,易误选F)

4。第 4 个问题

Vectorization allows you to compute forward propagation in an L-layer neural network without an explicit for-loop (or any other explicit iterative loop) over the layers l=1, 2, …,L. True/False?

True

False

answer(B)   reason:在更深层的神经网络学习中，依旧难以避免