#machine learning
Dec 2025
Control Variate Score Matching for Diffusion Models
The Control Variate Score Identity (CVSI) is introduced, an unbiased estimator with an analytically optimal, state- and time-dependent control coefficient that theoretically minimizes variance over the entire diffusion process in data-free sampler learning and training-free diffusion sampling.
Khaled Kahouli, R. Élie, Klaus-Robert Müller et al.
· arXiv.org · 5 citations
· ⚡1