Error after Assignment submission: Gradient Checking

[NickHalden]

Hi all,

I’m working on one of the programming assignment from the “Improving Deep Neural Networks: Hyperparameter Tuning, Regularization and Optimization” course.

The assignment is Gradient Checking and after submitting the work, the score was negative.

I noticed that I get an error in the last cell on the notebook (see attached screenshots).

The function being called in the last cell is gradient_check_n_test_case(), but is not referenced anywhere on the notebook.

Shouldn’t the function “gradient_check_n(parameters, gradients, X, Y, epsilon=1e-7, print_msg=False)” be called instead?

Also, the “parameters”, “gradients”, “X”, “Y” attributes which should be passed to the function, are not defined anywhere globally.

Thanks

[Mubsi]

Hi @NickHalden,

The function gradient_check_n_test_case() comes from a helper file. You can take a look at the helper files by clicking, Files --> Open....

Looking at your screenshot, it is telling that you ran the code cell containing this function second (In[2]). In order for this function to load, you need to run the first code cell where all of the libraries and helper files are being imported.

Hope this makes sense,
Mubsi

[paulinpaloalto]

Yes, there is a topic about the “name not defined” problem on the DLS FAQ Thread, q.v.

[NickHalden]

Many thanks both. That solved the issue. I may have mistakenly missed to run the first cell and haven’t realised it.

Nick