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DDIM inference eta

Open salvadog opened this issue 2 years ago • 1 comments

Hi, thanks for your great job. I'm curious about the use of ddim sample with eta=1, which is equivalent to respaced DDPM. And when I tried to sample with ddim eta=0.0, which means no addtional stochastic noise, but the sample results were not good and full of random artifacts. Do you have any clues?

salvadog avatar Dec 12 '23 14:12 salvadog

Hi. Thanks for your interest of our work. I used to test on eta=0.0 and did not see too much quality degradation. You may try to use different seeds to check if the artifacts always exist. I did observe that the performance of eta=0.0 is not as good as eta=1.0 because of the lack of randomness. But the performance should not be too bad. You can show me the results if still does not work. Thanks.

IceClear avatar Dec 12 '23 15:12 IceClear