English

Stochastic Krasnosel skii-Mann Iterations in Banach Spaces with Bregman Distances

Optimization and Control 2025-06-11 v1

Abstract

We propose a generalization of the stochastic Krasnoselskil-Mann (SKM)(SKM) algorithm to reflexive Banach spaces endowed with Bregman distances. Under standard martingale-difference noise assumptions in the dual space and mild conditions on the distance-generating function, we establish almost-sure convergence to a fixed point and derive non-asymptotic residual bounds that depend on the uniform convexity modulus of the generating function. Extensions to adaptive Bregman geometries and robust noise models are also discussed. Numerical experiments on entropy-regularized reinforcement learning and mirror-descent illustrate the theoretical findings.

Keywords

Cite

@article{arxiv.2506.08031,
  title  = {Stochastic Krasnosel skii-Mann Iterations in Banach Spaces with Bregman Distances},
  author = {Saeed Hashemi Sababe and Ehsan Lotfali Ghasab},
  journal= {arXiv preprint arXiv:2506.08031},
  year   = {2025}
}