Unverified50% confidenceFactExact time
The original DDPM sets the variance of the reverse process to a fixed value, but later improved versions allow the variance to be learned as well.
1
Sources
50%
Confidence
Long-term
Relevance
10/26/2026
First Seen
Sources
Diffusion Models for Beginners: From DDPM Principles to UNet in Practice
bilibili唐宇迪的AI课堂10/9/2026
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