Journal of the Operations Research Society of China ›› 2026, Vol. 14 ›› Issue (1): 32-54.doi: 10.1007/s40305-023-00529-6

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Global Convergence of a Stochastic Levenberg-Marquardt Algorithm Based on Trust Region

Wei-Yi Shao1, Jin-Yan Fan2   

  1. 1 School of Mathematical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China;
    2 School of Mathematical Sciences, and Key Lab of Scientific and Engineering Computing (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2023-03-05 Revised:2023-11-13 Online:2026-03-30 Published:2026-03-16
  • Contact: Jin-Yan Fan E-mail:jyfan@sjtu.edu.cn
  • Supported by:
    The authors are supported by Shanghai Municipal Science and Technology Key Project (No.22JC1401500),the National Natural Science Foundation of China (Nos.1971309 and 12371307),and the Fundamental Research Funds for the Central Universities.

Abstract: In this paper, we propose a stochastic Levenberg-Marquardt algorithm based on trust region for stochastic nonlinear least squares problems, where the stochastic Jacobians and gradients are used instead of the exact Jacobians and gradients. We show that the estimates and models of the objective function are probabilistically accurate if the number of samples at each iteration is chosen appropriately. Further, we prove that at least one accumulation point of the sequence generated by the proposed algorithm is a stationary point of the objective function with probability one.

Key words: Stochastic Levenberg-Marquardt method, Nonlinear least squares problems, Almost-sure global convergence

CLC Number: