https://lilianweng.github.io/lil-log/2021/07/11/diffusion-models.html#nice
What are Diffusion Models?
Jul 11, 2021
Lilian Weng
“Diffusion models are inspired by non-equilibrium thermodynamics…. Unlike VAE or flow models, diffusion models are learned with a fixed procedure and the latent variable has high dimensionality (same as the original data).”