C2W2: partial derivative for inputs in the `Computation Graph` video?

Probably a basic calculus question: In this video https://www.coursera.org/learn/advanced-learning-algorithms/lecture/rhcTZ/computation-graph-optional, why is there no derivative with respect to x or with respect to y? is it because the (x,y) pair is training data, we don’t take derivatives with respect to those variables? Why don’t we take derivatives with respect to the inputs?

Edit Where is the tag button for future reference, so I can tag it as week-2? If someone can post a screenshot that would be helpful. Thanks

Hello @YodaKenobi,

Because we only want to do gradient descent for the weights, and the gradient of the weights do not depend on any gradient of the inputs.

Cheers,
Raymond

PS. I have added the week tag for you, and I can share a screenshot after I get to my computer in the next few hours.

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Hello @YodaKenobi,

Please check this out for the screenshots.

Cheers,
Raymond

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