Constant total variance with an inverse-sigmoid SNR schedule improves few-step diffusion sampling, giving stable molecules in 4 steps.
Improved techniques for training score-based generative models
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Disentangling Total-Variance and Signal-to-Noise-Ratio Improves Diffusion Models
Constant total variance with an inverse-sigmoid SNR schedule improves few-step diffusion sampling, giving stable molecules in 4 steps.