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Blurring Diffusion Models
May 2, 2024, 4:43 a.m. | Emiel Hoogeboom, Tim Salimans
cs.LG updates on arXiv.org arxiv.org
Abstract: Recently, Rissanen et al., (2022) have presented a new type of diffusion process for generative modeling based on heat dissipation, or blurring, as an alternative to isotropic Gaussian diffusion. Here, we show that blurring can equivalently be defined through a Gaussian diffusion process with non-isotropic noise. In making this connection, we bridge the gap between inverse heat dissipation and denoising diffusion, and we shed light on the inductive bias that results from this modeling choice. …
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