Why are the logits on the numerator in the loss function not masked for comparing a sample with itself?

dalao, I find that in PaCo or GPaCo the logits on the numerator in the loss function not masked, but the denominator of the loss function is masked cause `exp_logits = torch.exp(logits) * logits_mask` i think the the logits on the numerator also should masked? and the learnable center is used for predict ground truth to make it become a supervised question? thanks😢