Clarification about the cross-entropy loss for ex12

[Maksym Andriushchenko]

Hi all,

To clarify, in ex12 we assume the usage of the cross-entropy loss which includes the softmax function.

I.e. as the loss you should implement this:

In this particular formulation, y is a scalar in {1, 2, ..., K}. However, it might be a bit easier to work with the one-hot representation of the labels. It's up to you.

Best wishes,

Maksym