Comment by diyer22

I believe it is the novelty. Here I would like to quote Reviewer r4YK’s original words:

> Many high rated papers would have been done by someone else if their authors never published them or were rejected. However, if this paper is not published, it is not likely that anyone would come up with this approach. This is real publication value. I am reminding again the original diffusion paper from 2015 (Sohl-Dickstein) that was almost not noticed for 5 years. Had it not been published, would we have had the amazing generative models we have today?

Cite from: https://openreview.net/forum?id=xNsIfzlefG&noteId=Dl4bXmujh1

Besides, we compared DDN with other approaches in the Table 1 of original paper, including VQ-VAE.