A Rate Transfer Method: Convergence Rates in Stochastic Gradient Descent via Stochastic Calculus

We develop a rate-transfer method that converts finite-time Lyapunov estimates for an associated stochastic differential equation (SDE) into finite-time convergence bounds for stochastic gradient algorithms. Under generic moment and smoothness conditions, the convergence analysis of the stochastic gradient method reduces to a calculus argument verifying a Lyapunov generator inequality for the SDE. The method recovers established rates for classical stochastic gradient methods and provides a way to establish convergence rates for new optimization algorithms through calculus arguments applied to their associated SDEs.

Source: arXiv:2610.18739v1 - http://arxiv.org/abs/2610.18739v1 PDF: https://arxiv.org/pdf/2610.18739v1 Original Link: http://arxiv.org/abs/2610.18739v1