4.1 深层神经网络(Deep L-layer neural network)
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,则包含了个隐藏层,最后的层是输出层
和中的上标都是从开始的,
输入记为,把输出层记为
:(with examples)
Shape of W
Shape of b
Activation
Shape of Activation
Layer 1
Layer 2
Layer L-1
Layer L