Help with Matrix Multiplications

[cg_macdonald]

Hi,

I’m managed to get an output in the correct format but the numbers don’t match the expected. I’m struggling to understand how the matrix multiplications could be implemented any other way.
Are there any hints that could help?

[Deepti_Prasad]

hi @cg_macdonald

check if this thread helps you debug your codes. Read Paul’s comment for the thread to understand while matrix multiplication you are not suppose to use incorrect function as that cause incorrect calculations and converts your vector into scalar

C1_W1 Assignment gradientDescent 4 test failed

To close the loop on the public thread here, the issue was that the z and h values were calculated as scalars (the sum over the samples). We need to maintain them as vectors, so that we can see the separate predictions per sample.

if still having issue then let us know

regards
DP

[cg_macdonald]

thank you, I’ve picked up one error from that post, however its just given me a different set of wrong numbers:

[Deepti_Prasad]

what does unittest cell run shows result now?

[cg_macdonald]

much the same:

[Deepti_Prasad]

You probably didn’t do the right correction. Send the screenshot of the codes by personal DM. Click on my name and then message