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### Search before asking
- [X] I have searched the YOLOv8 [issues](https://github.com/ultralytics/ultralytics/issues) and [discussions](https://github.com/ultralytics/ultralytics/discussions) and fou…
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Hello, I want to know how the weight in FocalLoss is determined according to the voxel ratio of different organs. For example, the voxel ratio of large organs and small organs is 500:1. How should the…
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# Focal loss implementation for LightGBM - Max Halford
Motivation If you’re reading this blog post, then you’re likely to be aware of LightGBM. The latter is a best of breed gradient boosting library…
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Why there are two version of focal loss methods in _"class FocalLoss(nn.Module): URL: [https://github.com/kuangliu/pytorch-retinanet/blob/2199fd9711fd787ae409800a499db73e6d466fd7/loss.py](url)" ????
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In losses.py, we're required to finish the part of Focal Loss from 107th line to 117th line.
`focal_weight = "?"`
`bce = "?"`
`cls_loss = focal_weight * bce`
However, I'm a little bit con…
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Hi,
wanted to try but I got stuck here (error, from Mac Terminal):
"File "pcPromoter.py", line 5, in
from focal_loss import BinaryFocalLoss
ModuleNotFoundError: No module named 'focal_loss'"…
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if appling focal_loss to rpn_class ,mrcnn_class ,mrcnn_mask , the performance will be better ?
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Do you plan to add focal loss to boost SSD performance?
https://arxiv.org/abs/1708.02002
Thanks,
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https://github.com/CasiaFan/tensorflow_retinanet/blob/39d53cca8bc5bdb10f57614282ed2b568e349910/loss.py#L35
Why you multiply `onehot_labels` again in this line?
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我感觉你的focal loss 有点和论文不一样是你自己修改的还是,这么样的呢?可以给我些解答吗