f1recracker
/ focal_loss.py
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September 3, 2023 09:11
PyTorch implementation of focal loss that is drop-in compatible with torch.nn.CrossEntropyLoss
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| # pylint: disable=arguments-differ | |
| import torch | |
| import torch.nn as nn | |
| import torch.nn.functional as F | |
| class FocalLoss(nn.CrossEntropyLoss): | |
| ''' Focal loss for classification tasks on imbalanced datasets ''' |