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Hi，您好，我想问一下关于数据不均衡问题 #26

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young169 opened this issue Jan 27, 2021 · 2 comments
Open

Hi，您好，我想问一下关于数据不均衡问题 #26

young169 opened this issue Jan 27, 2021 · 2 comments

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@young169
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young169 commented Jan 27, 2021 •
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需要关注吗？不均衡的数据mAP只有0.2左右。根据您的经验建议怎么解决呢？是在数据准备中还是在loss中加权？
@DataXujing
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做一些离线的数据增强，或替换Loss, 现在YOLO v5使用Focal Loss, 可以试一下Gensralized Focal Loss等； 但是最重要的还是数据量和标注的质量，这两个肯定要保证，如果数据量上来了，不平衡也会被削弱

@young169
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young169 commented Mar 30, 2021 •
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感谢！不过还想问一下怎么样具体的显示验证集中每一类的precision、recall呢？还有就是怎么样固定部分网络的权重，比如我只想训练用于分类的网络？

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@young169 @DataXujing