Understanding the Denoising Diffusion Probabilistic Model (DDPMs), the Socratic Way

A deep dive into the motivation behind the denoising diffusion model and detailed derivations for the loss function

Wei Yi
Towards Data Science
69 min readFeb 25, 2023

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Photo by Chaozzy Lin on Unsplash

The Denoising Diffusion Probabilistic Models by Jonathan Ho et. al. is a great paper. But I had difficulty understanding it. So I…

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I am a principal data scientist at AstraZeneca. Previously I worked at SecondMind, Microsoft Research, and also was CTO of a hedge fund EQB.