Improvement over using TOOD loss for auxiliary.

[jihwanp]

Hi, thanks for providing such a wonderful work.
There seems no ablation when using a better loss design for dense queries in the paper. Compared to using focal loss, how much does it improve the performance?
And different from DDQ-FCN, why did you use TOOD loss only for auxiliary in DDQ-DETR?

[jshilong]

Sorry for the late reply, It has been a long time since I last time checked the issue of this repo because I changed the research topic to generative models last year.

1. "using a better loss design for dense queries in the paper." is actually what they do in their original paper. We add this loss mainly to show one-to-one assignment can also achieve SOTA 1X performance on COCO.
2. Auxiliary queries in DETR should play the same role as dense queries in one-stage detectors.