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Why use x_start as the target in each timestep of diffusion training? #35

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shaoguowen opened this issue Feb 4, 2024 · 1 comment

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@shaoguowen
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I have seen using noise, x_noisy or v_prediction, etc. as the training target, but each timestep uses x_start as the training target, which seems a bit strange. Can you explain it or provide relevant articles?

@plyfager
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Maybe it's convenient to calculate other losses.

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