zlacker

>>zacwes+(OP)
They've got a copy of a figure from the original diffusion paper, showing a diffusion process on a spiral dataset. They seem to completely misunderstand it. The figure does not show image diffusion, rather it shows a diffusion process in which each data item is a 2D point. The figure is showing diffusion on an entire dataset and demonstrating that it can approximately reconstruct the spiral-shaped distribution.

I'm surprised they couldn't find someone with even a rudimentary understanding of diffusion models to review this.

>>Imnimo+c41
Oh my god, I'm glad someone else noticed this because it was driving me nuts. Deeply troubling that their case hinges on such a fundamental misunderstanding of the technology.

I bet a proper analysis of that toy experiment would conclude that none of the original data points are perfectly recovered: Only the underlying distribution / manifold is recovered, which really doesn't lend well to their argument at all.