Clarify the different two stages training inside source code

[tuanmanh1410]

Hi authors,
First of all, thank you for sharing the code for VRDFormer.
I'm curious about which meaning of two-stage training is inside the main function of the source code?
And how can we evaluate model during inference phase with two tasks in VRD Former?
Because the paper mentioned that VRDFormer is a one-stage framework.

[weiyingxue]

I have the same confusion