Source on BalancedBCEWithLogitsLoss
davidhuangal opened this issue · 5 comments
I was wondering if there is a paper or even just a description on the BalancedBCEWithLogitsLoss
?
Hi! Indeed, there are. See https://arxiv.org/pdf/1504.06375.pdf formula 2.
Will update the code for the future release with proper docs.
Thank you very much!
I have two more questions about this loss function: what does the parameter gamma
correspond with in formula 2 since there isn't a gamma symbol in it, and how does it effect the loss?
The gamma is a my addition to this loss, when gamma=1, it's equal to vanilla BBCE as in Formula 2. Values >1 decay the balancing weights. E.g if gamma = 2, and positives fraction is 0.25 and negatives is 0.75, corresponding weights will be 0.25^2 and 0.75^ accordingly.
Got it, that makes sense. Thank you again.