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Linda Bridges passed away. This is the full obituary where you can share condolences and memories. Published in the Cumberland Times News on 2024-04-23. ....
Diffusion models are trained to reverse a stochastic process through score matching. However, a lot of diffusion models rely on a small but critical implementation detail called thresholding. Thresholding projects the sampling process to the data support after each discretized diffusion step, stabilizing generation at the cost of breaking the theoretical framework. Interestingly, as one limits the number of steps to infinity, thresholding converges to a reflected stochastic differential equation. In this blog post, we will be discussing our recent work on Reflected Diffusion Models, which explores this connection to develop a new class of diffusion models which correctly trains for thresholded sampling and respects general boundary constraints. ....