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arxiv 2004.02823 v2 pith:VG4VSBWF submitted 2020-04-06 math.OC stat.ML

Non-Convex Optimization via Non-Reversible Stochastic Gradient Langevin Dynamics

classification math.OC stat.ML
keywords langevinstochasticdiffusiondynamicsgradientnon-convexnon-reversiblensgld
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Stochastic Gradient Langevin Dynamics (SGLD) is a powerful algorithm for optimizing a non-convex objective, where a controlled and properly scaled Gaussian noise is added to the stochastic gradients to steer the iterates towards a global minimum. SGLD is based on the overdamped Langevin diffusion which is reversible in time. By adding an anti-symmetric matrix to the drift term of the overdamped Langevin diffusion, one gets a non-reversible diffusion that converges to the same stationary distribution with a faster convergence rate. In this paper, we study the non reversible Stochastic Gradient Langevin Dynamics (NSGLD) which is based on discretization of the non-reversible Langevin diffusion. We provide finite-time performance bounds for the global convergence of NSGLD for solving stochastic non-convex optimization problems. Our results lead to non-asymptotic guarantees for both population and empirical risk minimization problems. Numerical experiments for Bayesian independent component analysis and neural network models show that NSGLD can outperform SGLD with proper choices of the anti-symmetric matrix.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Variance Reduction for Stochastic Gradient Generalized Non-reversible Langevin Monte Carlo Algorithms

    stat.ML 2026-06 unverdicted novelty 7.0

    Proves CLT for stochastic gradient non-reversible Langevin Monte Carlo and sufficient condition for variance reduction via anti-symmetric perturbation relative to reversible baseline.

  2. Decentralized Proximal Stochastic Gradient Langevin Dynamics

    stat.ML 2026-05 unverdicted novelty 7.0

    DE-PSGLD is the first decentralized MCMC sampler for constrained convex domains that converges to a regularized Gibbs distribution with explicit 2-Wasserstein bounds for agents and network averages.

  3. Accelerating Langevin Monte Carlo Sampling: A Large Deviations Analysis

    math.PR 2025-03 unverdicted novelty 4.0

    A unified large deviations analysis is proposed to study acceleration mechanisms in variants of overdamped Langevin Monte Carlo methods, supported by numerical experiments.