The performance difference between the validation set and the test validation set

[sunguwei]

In your released paper, I find that the performance difference between the validation set and the test validation set is quite large, which is not normal. Could you explain why?

[baidut]

Thank you! Good question. The test set contains images bigger than 640x640 while the validation set contains images that have a width or height smaller than 640 and have similar size distribution with the training set.