CFG is missing a Rényi divergence repulsion term, and the new CFG IG sampler uses iterative noising and denoising to preserve diversity while improving conditional generation quality.
Guidance: a cheat code for diffusion models, 2022
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Conditional Diffusion Models with Classifier-Free Gibbs-like Guidance
CFG is missing a Rényi divergence repulsion term, and the new CFG IG sampler uses iterative noising and denoising to preserve diversity while improving conditional generation quality.