C4W2E1 identity_block

Course Q&A Deep Learning Specialization Convolutional Neural Networks
1

I don’t really understand why filter shape of F1 and F3 is (1,1) and for F2 is (f,f).
Is there any particular reason applying it for the implementation of ResNet block?

2

It allows you to vary the f value without rewriting the function.

3

I mean why we choose these kernel dimensions (e.g. bottleneck) ?

4

Experiments by the course designers showed that these values worked well for what the assignment is teaching.

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