train on my dataset with miatakes

[lsdzzq777]

when i train on my dataset ,something wrong happened.the map_raw was nan
can you give me some suggestions?
thanks!

[xlliu7]

It seems that there's something wrong with your dataloader. No ground truth is found during mAP calculation. Does your dataset only contain one action class? Is your annotation file in the correct format?

[mazzz56]

when i train on my dataset ,something wrong happened.the map_raw was nan can you give me some suggestions? thanks!

could you share your training approach.