Qingpeng Li

fix softmax focal loss algorithm

6

Thanks for your contribution and we appreciate it a lot. The following instructions would make your pull request more healthy and more easily get feedback. If you do not understand...

[Bug] The CUDA implementation of `softmax_focal_loss` is incorrect

1

### Prerequisite - [X] I have searched [Issues](https://github.com/open-mmlab/mmcv/issues) and [Discussions](https://github.com/open-mmlab/mmcv/discussions) but cannot get the expected help. - [X] The bug has not been fixed in the latest version(https://github.com/open-mmlab/mmcv). ### Environment...