[D] Why is the diffution model so powerful? but the math behind it is so simple.

• minDiffusion

  2 684 0.0 Python

  Self-contained, minimalistic implementation of diffusion models with Pytorch.

You can see the 200 lines code here: https://nn.labml.ai/diffusion/ddpm/index.html and https://github.com/cloneofsimo/minDiffusion, math is here: https://lilianweng.github.io/posts/2021-07-11-diffusion-models/

• score_sde

  6 1,242 0.0 Jupyter Notebook

  Official code for Score-Based Generative Modeling through Stochastic Differential Equations (ICLR 2021, Oral)

Turns out that diffusion models also define a certain differential equation, making it a neural ODE. Then you can just integrate the ODE in the other direction to get the exact inverse for the DDPM (it's not entirely exact b/c of numerical error in the solver, but close enough)

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