Week 4 Exercise 5 L_model_forward

[jonaslalin]

To find the bug, you need to perform dimensional analysis. @paulinpaloalto has already written a great post covering L_model_forward_test_case_2hidden():

W 4 A1 | Ex- 5 | Wrong shape and output

This is L_model_forward which manages the forward propagation logic through all the layers of the network. So it’s pretty important to have a clear picture of what the overall process is before you start writing the code. One way to get a fairly concrete idea in a particular case like this is to work through what is called the “dimensional analysis” of what happens through all the layers. The way to do that is to start by writing down the shapes of all the input objects that we are given by the …