Hi @Harvey_Wang
The “or” operation is pretty simple in mask_exclude_positives it just checks both masks if there is TRUE value in any of them.
When you multiply TRUE value by a number you get that number, 0 everywhere else.
It might be more informative to visualize the operations of your question:
This is a part from TripletLossFn calculation when I wanted to check the " Expected Output" of that exercise. (Where I think the course creators chose a poor batch dimension of 2, so I wanted to check the inner workings when the batch_size is 4).
If you might be interested in full calculations:
So here is the original exercise test (with batch size 2, I remove the solution code lines):
And here is I think better example:
Cheers