Classifier-free guidance trades off sample quality and diversity in conditional diffusion models by combining scores from jointly trained conditional and unconditional models.
A connection between score matching and denoising autoencoders
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Metropolis-adjusted Langevin correctors using score-based acceptance probabilities, including an exact Bernoulli factory method and a Simpson's rule approximation, reduce sampling bias in diffusion models and improve FID scores.
SSLS combines score-based Langevin Monte Carlo with annealing for nonlinear posterior updates in sequential assimilation, supported by total-variation convergence bounds that establish asymptotic stability and numerical tests in high-dimensional nonlinear settings.
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Classifier-Free Diffusion Guidance
Classifier-free guidance trades off sample quality and diversity in conditional diffusion models by combining scores from jointly trained conditional and unconditional models.
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Metropolis-Adjusted Diffusion Models
Metropolis-adjusted Langevin correctors using score-based acceptance probabilities, including an exact Bernoulli factory method and a Simpson's rule approximation, reduce sampling bias in diffusion models and improve FID scores.
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Nonlinear Assimilation via Score-based Sequential Langevin Sampling
SSLS combines score-based Langevin Monte Carlo with annealing for nonlinear posterior updates in sequential assimilation, supported by total-variation convergence bounds that establish asymptotic stability and numerical tests in high-dimensional nonlinear settings.