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This work concerns the minimization of the pseudospectral abscissa of a matrix-valued function dependent on parameters analytically. The problem is motivated by robust stability and transient behavior considerations for a linear control…

数值分析 · 数学 2024-06-21 Nicat Aliyev , Emre Mengi

We investigate how to solve smooth matrix optimization problems with general linear inequality constraints on the eigenvalues of a symmetric matrix. We present solution methods to obtain exact global minima for linear objective functions,…

最优化与控制 · 数学 2025-07-23 Casey Garner , Gilad Lerman , Shuzhong Zhang

For a quadratic matrix polynomial dependent on parameters and a given tolerance $\epsilon > 0$, the minimization of the $\epsilon$-pseudospectral abscissa over the set of permissible parameter values is discussed, with applications in…

数值分析 · 数学 2025-09-03 Volker Mehrmann , Emre Mengi

Optimization of convex functions subject to eigenvalue constraints is intriguing because of peculiar analytical properties of eigenvalues, and is of practical interest because of wide range of applications in fields such as structural…

数值分析 · 数学 2013-10-08 Emre Mengi

This paper studies the problem of selecting a submatrix of a positive definite matrix in order to achieve a desired bound on the smallest eigenvalue of the submatrix. Maximizing this smallest eigenvalue has applications to selecting input…

系统与控制 · 计算机科学 2017-09-08 Andrew Clark , Qiqiang Hou , Linda Bushnell , Radha Poovendran

Reliable and efficient computation of the pseudospectral abscissa in the large-scale setting is still not settled. Unlike the small-scale setting where there are globally convergent criss-cross algorithms, all algorithms in the large-scale…

数值分析 · 数学 2025-06-09 Waqar Ahmed , Emre Mengi

We design a sublinear-time approximation algorithm for quadratic function minimization problems with a better error bound than the previous algorithm by Hayashi and Yoshida (NIPS'16). Our approximation algorithm can be modified to handle…

数据结构与算法 · 计算机科学 2018-06-29 Amit Levi , Yuichi Yoshida

We study the performance of the spectral method for the phase synchronization problem with additive Gaussian noises and incomplete data. The spectral method utilizes the leading eigenvector of the data matrix followed by a normalization…

统计理论 · 数学 2024-01-09 Anderson Ye Zhang

We present a hierarchy of tractable relaxations to obtain lower bounds on the minimum value of a polynomial over a constraint set defined by polynomial equations. In contrast to previous convex relaxation techniques for this problem, our…

最优化与控制 · 数学 2025-07-23 Elvira Moreno , Venkat Chandrasekaran

We consider the minimization or maximization of the $J$th largest eigenvalue of an analytic and Hermitian matrix-valued function, and build on Mengi et al. (2014, SIAM J. Matrix Anal. Appl., 35, 699-724). This work addresses the setting…

数值分析 · 数学 2017-06-19 Fatih Kangal , Karl Meerbergen , Emre Mengi , Wim Michiels

The problem of interest is the minimization of a nonlinear function subject to nonlinear equality constraints using a sequential quadratic programming (SQP) method. The minimization must be performed while observing only noisy evaluations…

最优化与控制 · 数学 2021-10-12 Figen Oztoprak , Richard Byrd , Jorge Nocedal

We are concerned with the dependence of the lowest positive eigenvalue of the Dirac operator on the geometry of rectangles, subject to infinite-mass boundary conditions. We conjecture that the square is a global minimiser both under the…

谱理论 · 数学 2022-08-22 Philippe Briet , David Krejcirik

The smallest positive eigenvalue of the Laplacian of a network is called the spectral gap and characterizes various dynamics on networks. We propose mathematical programming methods to maximize the spectral gap of a given network by…

无序系统与神经网络 · 物理学 2013-01-09 Naoki Masuda , Tetsuya Fujie , Kazuo Murota

Rational filter functions can be used to improve convergence of contour-based eigensolvers, a popular family of algorithms for the solution of the interior eigenvalue problem. We present a framework for the optimization of rational filters…

计算工程、金融与科学 · 计算机科学 2017-05-01 Jan Winkelmann , Edoardo Di Napoli

When applying eigenvalue decomposition on the quadratic term matrix in a type of linear equally constrained quadratic programming (EQP), there exists a linear mapping to project optimal solutions between the new EQP formulation where $Q$ is…

最优化与控制 · 数学 2020-10-22 Shi Yu

In this paper, we consider the problem of approximating a given matrix with a matrix whose eigenvalues lie in some specific region \Omega, within the complex plane. More precisely, we consider three types of regions and their intersections:…

最优化与控制 · 数学 2024-12-20 Neelam Choudhary , Nicolas Gillis , Punit Sharma

In this paper, we study a class of approximation problems, appearing in data approximation and signal processing. The approximations are constructed as combinations of polynomial splines (piecewise polynomials), whose parameters are subject…

最优化与控制 · 数学 2015-03-05 Zahra Roshan Zamir , Nadezda Sukhorukova

We propose and analyze a sequential quadratic programming algorithm for minimizing a noisy nonlinear smooth function subject to noisy nonlinear smooth equality constraints. The algorithm uses a step decomposition strategy and, as a result,…

最优化与控制 · 数学 2025-03-11 Albert S. Berahas , Jiahao Shi , Baoyu Zhou

We consider the NP-hard problem of minimizing a convex quadratic function over the integer lattice ${\bf Z}^n$. We present a simple semidefinite programming (SDP) relaxation for obtaining a nontrivial lower bound on the optimal value of the…

最优化与控制 · 数学 2017-03-16 Jaehyun Park , Stephen Boyd

We study a class of constrained nonconvex-nonconcave minimax optimization problems in which the inner maximization involves potentially complex constraints. Under the assumption that the inner problem of a novel lifted minimax reformulation…

最优化与控制 · 数学 2026-05-27 Zhaosong Lu , Xiangyuan Wang
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