How to replace and train a Custom Dataset Using the training and validation code?

[APAE12138]

 I’m currently learning how to work with training and validation code, but I’m unsure about how to replace the dataset with my own for training purposes. I have a labeled dataset that includes train, val, and test folders, but I'm not certain how to correctly configure the dataset paths and format.
 Does anyone have experience in replacing the dataset for training? I’d appreciate some guidance, such as how to correctly configure the data.yaml file and adjust the code to handle custom datasets. If you have any detailed examples or suggestions, that would be super helpful. Thank you all in advance!

有大佬知道怎么跑training and validation 部分的代码吗？作者发的我有点看不懂QAQ。我想使用自己的数据集进行训练，但一直不知道怎么修改里面的代码。我看了一些相关的教程，根据coco数据集的形式标注好了 train、val 和 test ，但是跑代码的时候提示找不到标签位置，不能开始训练。有人知道怎么修改吗？非常感谢大家的帮助！