Drop Loss Implementation

[ChristophReich1996]

Hi @Dantong88,

great work again, I wanted to ask how you have implemented the Drop Loss? From what I've seen, you haven't changed the loss formulation of Detectron2, how do you achieve the dropping? It would be amazing if you could provide a high-level intuition about the Drop Loss implementation and/or point me to the exact part of the loss implementation.

Thanks for your help!

Cheers,
Christoph