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Why the model mean is set to q_posterior_mean? #146

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Cranjis-McB opened this issue May 25, 2024 · 2 comments
Open

Why the model mean is set to q_posterior_mean? #146

Cranjis-McB opened this issue May 25, 2024 · 2 comments

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@Cranjis-McB
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Cranjis-McB commented May 25, 2024 •
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why the model mean here is set to q_posterior_mean instead of

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@Cranjis-McB Cranjis-McB changed the title Is the formula for predicting 𝑥_start from noise prediction 𝜖 correct in Gaussian Diffusion? Why the model mean is set to q_posterior_mean? May 26, 2024
@ShinJonghyeok
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They are same equations. They look different whether x_0 is replaced(your equation) or not(authors').

@ZachL1
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ZachL1 commented Oct 3, 2024

see https://lilianweng.github.io/posts/2021-07-11-diffusion-models/#reverse-diffusion-process

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@ShinJonghyeok @ZachL1 @Cranjis-McB