【已办理】ERROR:The testing results of the whole dataset is empty

题目形貌

使用MMdetection复现论文swin Transformer，体现错误：ERROR:The testing results of the whole dataset is empty，与此同时，各项评价指标如AP,AR效果趋于零，F1值酿成-1，loss与grad_norm爆炸增长，详细情况如下图：
图1： 图2：

图3：
题目分析

看到报错的第一眼，猜测大概是数据集的题目，以是查抄了数据集的路径，然后查抄了数据集内里是否有图片，但经过一番验证，清除了这种大概性。如果数据集自己有题目，代码一开始就无法运行起来，由于mmdet肯定会报错，而且报错内容是：找不到数据集或者说找不到某张图片。
再仔细观察报错：ERROR:The testing results of the whole dataset is empty,拿不到测试效果，连合爆炸的loss与grad_morm,我有来由怀疑是梯度爆炸或者梯度消散所导致的。有了这个猜测，我转头审视自己的代码，最有大概导致梯度爆炸的超参数就是学习率lr，是不是我自己设置的学习率lr不符合？
学习率是啥？
学习率是梯度下降多次迭代过程中，用来控制模子学习进度的超参数。可以这么明确，学习率大就学的快（梯度下降块），学习率小就学得慢，但学习率并非越大越好，学习率过大，轻易造成梯度爆炸或者消散。
办理办法

MMdetection默认的学习率，大多都是0.02，如果不刻意更改，模子会使用这个学习率去练习，swin Transformer没办法在lr=0.02条件下练习，将学习率更改为论文设定的0.0001，模子就正常练习。
在MMdetection中，学习率的调解是在目录：configs/base/schedules/schedule_1x.py文件中：

学习率调解后的正常的练习效果：


来源：https://blog.csdn.net/fengbao24/article/details/127258699
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