PDNS decomposes diffusion neural sampler training into proximal subproblems on path measures to gradually approach multimodal targets and promote mode exploration.
1 λ Eµλ(ex|XT ) X d:exd=M −logs θ(ex)d,X d T # , ∝E X∼P ¯θk−1 er(XT ) dPref dP¯θk−1 ηk ηk+1 Eλ∼Unif(0,1)
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Proximal Diffusion Neural Sampler
PDNS decomposes diffusion neural sampler training into proximal subproblems on path measures to gradually approach multimodal targets and promote mode exploration.