A scalable sequential adaptive cubic regularization algorithm for optimization with general equality constraints

Fuente: arXiv
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Autores principales: Pei, Yonggang, Lin, Yubing, Shao, Shuai, Louzeiro, Mauricio Silva, Zhu, Detong
Formato: Preprint
Publicado: 2025
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author Pei, Yonggang
Lin, Yubing
Shao, Shuai
Louzeiro, Mauricio Silva
Zhu, Detong
author_facet Pei, Yonggang
Lin, Yubing
Shao, Shuai
Louzeiro, Mauricio Silva
Zhu, Detong
contents The scalable adaptive cubic regularization method ($\mathrm{ARC_{q}K}$: Dussault et al. in Math. Program. Ser. A 207(1-2): 191-225, 2024) has been recently proposed for unconstrained optimization. It has excellent convergence properties, well-defined complexity bounds, and promising numerical performance. In this paper, we extend $\mathrm{ARC_{q}K}$ to nonlinear optimization with general equality constraints and propose a scalable sequential adaptive cubic regularization algorithm named $\mathrm{SSARC_{q}K}$. In each iteration, we construct an ARC subproblem with linearized constraints inspired by sequential quadratic optimization methods. Next, a composite-step approach is used to decompose the trial step into the sum of a vertical step and a horizontal step. By means of the reduced-Hessian approach, we rewrite the linearly constrained ARC subproblem as a standard unconstrained ARC subproblem to compute the horizontal step. Analogous to $\mathrm{ARC_{q}K}$, we employ a CG-Lanczos procedure with shifts to solve ARC subproblems inexactly, thus bypassing any hard case consideration. This also avoids solving the subproblem multiple times for obtaining a new iterative point. We establish the global convergence of the inexact ARC method $\mathrm{SSARC_{q}K}$ to first-order critical points. Preliminary numerical tests and some comparison results are presented to illustrate the performance of $\mathrm{SSARC_{q}K}$.
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id arxiv_https___arxiv_org_abs_2503_11254
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A scalable sequential adaptive cubic regularization algorithm for optimization with general equality constraints
Pei, Yonggang
Lin, Yubing
Shao, Shuai
Louzeiro, Mauricio Silva
Zhu, Detong
Optimization and Control
The scalable adaptive cubic regularization method ($\mathrm{ARC_{q}K}$: Dussault et al. in Math. Program. Ser. A 207(1-2): 191-225, 2024) has been recently proposed for unconstrained optimization. It has excellent convergence properties, well-defined complexity bounds, and promising numerical performance. In this paper, we extend $\mathrm{ARC_{q}K}$ to nonlinear optimization with general equality constraints and propose a scalable sequential adaptive cubic regularization algorithm named $\mathrm{SSARC_{q}K}$. In each iteration, we construct an ARC subproblem with linearized constraints inspired by sequential quadratic optimization methods. Next, a composite-step approach is used to decompose the trial step into the sum of a vertical step and a horizontal step. By means of the reduced-Hessian approach, we rewrite the linearly constrained ARC subproblem as a standard unconstrained ARC subproblem to compute the horizontal step. Analogous to $\mathrm{ARC_{q}K}$, we employ a CG-Lanczos procedure with shifts to solve ARC subproblems inexactly, thus bypassing any hard case consideration. This also avoids solving the subproblem multiple times for obtaining a new iterative point. We establish the global convergence of the inexact ARC method $\mathrm{SSARC_{q}K}$ to first-order critical points. Preliminary numerical tests and some comparison results are presented to illustrate the performance of $\mathrm{SSARC_{q}K}$.
title A scalable sequential adaptive cubic regularization algorithm for optimization with general equality constraints
topic Optimization and Control
url https://arxiv.org/abs/2503.11254