Inverted droput C2 Week 1

Course Q&A Deep Learning Specialization Improving Deep Neural Networks: Hyperparameter tun
1

Hi I am trying to complete forward_propagation_with_dropout(Course2 Week1, Exercize 3); however i am getting 1 test passed and 1 test failed. I have printed at every stage and feel my code is working fine and i have implemented all 4 steps. Can you please guide how i can check further. I can post my code here if its allowed or can share at other platform.

2

The common mistakes are:

  1. Using the wrong random function to compute the mask. We need numbers evenly distributed between 0 and 1, so using np.random.randn will end badly.
  2. Creating the mask as a column vector instead of a matrix the same shape as A. See this thread for more discussion of that point.
  3. Forgetting to do the “inverse” calculation after applying the mask.
3

Thanks Paulin. Now its working; i picked up the bug.