some question about loss function

[o0stinger0o]

Hello author @TheCamusean This is really a great job, but I have some questions about the loss function. What is the difference between ProjectedSE3DenoisingLoss and SE3DenoisingLoss. The loss mentioned in the paper should be SE3DenoisingLoss, but I saw that most of the configuration files in the experiment used ProjectedSE3DenoisingLoss.

Another question is what is the necessity of learning SDF, because I don’t know SDF very well, is it just to improve the quality of generation?