Preconditioned Flow Matching
It is proved that the excess risk is weighted by $\Sigma_t$, and that both gradient descent and stochastic gradient descent inherit condition-number-dependent convergence, and proposed a precondition-then-match framework that transforms the target distribution into a more isotropic representation, trains the main flow...
Shadab Ahamed, Eshed Gal, Md Shahriar Rahim Siddiqui et al.
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