DDPM Variational Bound

Reading DDPM as a hierarchical variational model.

Position in the series

hierarchical latent variable -> DDPM variational bound

Outline

Forward noising process as fixed inference path.
Reverse denoising process as generative model.
DDPM as a Markovian hierarchical latent variable model.
Variational lower bound decomposition.
Connection between KL terms and denoising prediction.
From variational bound to simplified training objective.

Notes

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