question about class balanced

[Joeless]

Hi， thanks for your code! I noticed in the sparsev2 paper that category balancing is important, but I wonder if it is effective for dense occ method? If the current GT does not have some classes, the weight will be +inf. I tried to use it in dense OCC prediction and found that is harmful for miou.

[Joeless]

Another question, I don't see that you used category balance in the semantic part of your code. Has this strategy been abandoned？

[afterthat97]

the class balanced CE is here:

https://github.com/MCG-NJU/SparseOcc/blob/b35e1d81d4bdbd7cc787f890f1c21885a754ac4f/models/loss_utils.py#L63

[Joeless]

Is this part of the code only used for 2-cls occupancy pred?

[afterthat97]

yes