Almost Sure Convergence and Non-asymptotic Concentration Bounds for Stochastic Mirror Descent Algorithm

Fuente: arXiv
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Auteurs principaux: Paul, Anik Kumar, Mahindrakar, Arun D, Kalaimani, Rachel K
Format: Preprint
Publié: 2024
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author Paul, Anik Kumar
Mahindrakar, Arun D
Kalaimani, Rachel K
author_facet Paul, Anik Kumar
Mahindrakar, Arun D
Kalaimani, Rachel K
contents This letter investigates the convergence and concentration properties of the Stochastic Mirror Descent (SMD) algorithm utilizing biased stochastic subgradients. We establish the almost sure convergence of the algorithm's iterates under the assumption of diminishing bias. Furthermore, we derive concentration bounds for the discrepancy between the iterates' function values and the optimal value, based on standard assumptions. Subsequently, leveraging the assumption of Sub-Gaussian noise in stochastic subgradients, we present refined concentration bounds for this discrepancy.
format Preprint
id arxiv_https___arxiv_org_abs_2407_05863
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Almost Sure Convergence and Non-asymptotic Concentration Bounds for Stochastic Mirror Descent Algorithm
Paul, Anik Kumar
Mahindrakar, Arun D
Kalaimani, Rachel K
Optimization and Control
This letter investigates the convergence and concentration properties of the Stochastic Mirror Descent (SMD) algorithm utilizing biased stochastic subgradients. We establish the almost sure convergence of the algorithm's iterates under the assumption of diminishing bias. Furthermore, we derive concentration bounds for the discrepancy between the iterates' function values and the optimal value, based on standard assumptions. Subsequently, leveraging the assumption of Sub-Gaussian noise in stochastic subgradients, we present refined concentration bounds for this discrepancy.
title Almost Sure Convergence and Non-asymptotic Concentration Bounds for Stochastic Mirror Descent Algorithm
topic Optimization and Control
url https://arxiv.org/abs/2407.05863