C1_W3_Logistic_Regression: compute_gradient AssertionError

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
1

Hi, I’m facing an AssertionError I can’t get past in my week 3 practice lab. I’m getting the following output:
dj_db at test w and b: -0.6
dj_dw at test w and b: [-44.83135361795273, -44.37384124957207]
This is actually pretty close to the required output, which is:
dj_db at test w and b (non-zeros):-0.5999999999991071
dj_dw at test w and b (non-zeros):[-44.8313536178737957, -44.37384124953978]

For one thing, i don’t understand why the values aren’t exactly the same, and for another, the error message is very puzzling:

AssertionError: Wrong value for dj_db. Expected: 0.28936094 got: 0.4188258252707137

It seems to be expecting a completely different value from the one we’re supposed to get as per the “Expected Output” part.

Can someone please help me figure this out?

2

There are multiple tests. Some are built into the notebook, some are in a utility python file.

All of them have their results displayed in the notebook. That’s why you see multiple sets of results.

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3

Ah, okay. Apparently we’re not supposed to post code here publicly, so can I message it to you? I can’t figure out what’s wrong with it anyway.

4

I believe this part of the assignment has detailed Hint codes, which pretty much give you the entire solution.

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