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In this paper, we extend the idea of using controlled perturbations to enhance the capabilities of active-set prediction for interior point methods for convex Quadratic Programming (QP) problems. Namely, we consider perturbing the…

最优化与控制 · 数学 2014-09-23 Yiming Yan

In real-world control applications, actuator constraints and output constraints (specifically in tracking problems) are inherent and critical to ensuring safe and reliable operation. However, generally, control strategies often neglect…

系统与控制 · 电气工程与系统科学 2025-04-17 Saurabh Kumar , Shashi Ranjan Kumar , Abhinav Sinha

Beamforming in ultrasound imaging has significant impact on the quality of the final image, controlling its resolution and contrast. Despite its low spatial resolution and contrast, delay-and-sum is still extensively used nowadays in…

计算机视觉与模式识别 · 计算机科学 2016-05-20 Teodora Szasz , Adrian Basarab , Denis Kouamé

A computationally efficient method to solve non-convex programming problems with linear equality constraints is presented. The proposed method is based on a recursively feasible and descending sequential convex programming procedure proven…

最优化与控制 · 数学 2018-10-25 Josep Virgili-Llop , Marcello Romano

This paper presents a general convergence theory of penalty based numerical methods for elliptic constrained inequality problems, including variational inequalities, hemivariational inequalities, and variational-hemivariational…

数值分析 · 数学 2019-12-18 Weimin Han , Mircea Sofonea

Accurate camera calibration is a precondition for many computer vision applications. Calibration errors, such as wrong model assumptions or imprecise parameter estimation, can deteriorate a system's overall performance, making the reliable…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Annika Hagemann , Moritz Knorr , Holger Janssen , Christoph Stiller

In Constraint Programming, solving discrete minimization problems with hard and soft constraints can be done either using (i) soft global constraints, (ii) a reformulation into a linear program, or (iii) a reformulation into local cost…

人工智能 · 计算机科学 2025-09-24 Pierre Montalbano , Simon de Givry , George Katsirelos

Intrusive uncertainty quantification methods for hyperbolic problems exhibit spurious oscillations at shocks, which leads to a significant reduction of the overall approximation quality. Furthermore, a challenging task is to preserve…

数值分析 · 数学 2021-05-18 Graham Alldredge , Martin Frank , Jonas Kusch , Ryan McClarren

We present a detailed set of performance comparisons of two state-of-the-art solvers for the application of designing time-delay compensators, an important problem in the field of robust control. Formulating such robust control mechanics as…

最优化与控制 · 数学 2019-01-01 Vyacheslav Kungurtsev , Tim Mitchell , Tomas Vyhlidal

There exist many Runge-Kutta methods (explicit or implicit), more or less adapted to specific problems. Some of them have interesting properties, such as stability for stiff problems or symplectic capability for problems with energy…

数值分析 · 数学 2018-04-16 Julien Alexandre dit Sandretto

We analyze two recently proposed methods to establish a priori lower bounds on the minimum of general integral variational problems. The methods, which involve either `occupation measures' or a `pointwise dual relaxation' procedure, are…

最优化与控制 · 数学 2024-04-23 Giovanni Fantuzzi , Ian Tobasco

Multiplicative noise (also known as speckle noise) models are central to the study of coherent imaging systems, such as synthetic aperture radar and sonar, and ultrasound and laser imaging. These models introduce two additional layers of…

最优化与控制 · 数学 2015-05-14 José M. Bioucas-Dias , Mário A. T. Figueiredo

Offline camera calibration techniques typically employ parametric or generic camera models. Selecting parametric models relies heavily on user experience, and an inappropriate camera model can significantly affect calibration accuracy.…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Yuqi Han , Qi Cai , Yuanxin Wu

In this paper we present the use of Constraint Programming for solving balanced academic curriculum problems. We discuss the important role that heuristics play when solving a problem using a constraint-based approach. We also show how…

编程语言 · 计算机科学 2007-05-23 Carlos Castro , Sebastian Manzano

The truncated singular value decomposition may be used to find the solution of linear discrete ill-posed problems in conjunction with Tikhonov regularization and requires the estimation of a regularization parameter that balances between…

数值分析 · 数学 2022-08-16 Rosemary A. Renaut , Anthony W. Helmstetter , Saeed Vatankhah

Most existing image denoising algorithms can only deal with a single type of noise, which violates the fact that the noisy observed images in practice are often suffered from more than one type of noise during the process of acquisition and…

多媒体 · 计算机科学 2016-11-18 Jian Zhang , Ruiqin Xiong , Chen Zhao , Siwei Ma , Debin Zhao

Deep learning approaches are successful in a wide range of AI problems and in particular for visual recognition tasks. However, there are still open problems among which is the capacity to handle streams of visual information and the…

机器学习 · 计算机科学 2022-02-02 Umang Aggarwal , Adrian Popescu , Eden Belouadah , Céline Hudelot

The time dependent complex Schr\"odinger equation with cubic nonlinearity is solved by constructing differential quadrature algorithm based on sinc functions. Reduction to a coupled system of real equations enables to approach the space…

数值分析 · 数学 2018-04-11 Alper Korkmaz

In contrast to set-point tracking which aims to reduce the tracking error between the tracker and the reference, tracking-in-range problems only focus on whether the tracker is within a given range around the reference, making it more…

系统与控制 · 电气工程与系统科学 2024-03-06 Nikilesh Ramesh , Eric C. Kerrigan , Yuanbo Nie

Generative models frequently suffer miscalibration, wherein statistics of the sampling distribution, such as the fraction of generations in a given class, deviate from desired values. We frame calibration as a constrained optimization…

机器学习 · 统计学 2026-05-29 Henry D. Smith , Nathaniel L. Diamant , Brian L. Trippe