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Initially developed for the min-knapsack problem, the knapsack cover inequalities are used in the current best relaxations for numerous combinatorial optimization problems of covering type. In spite of their widespread use, these…

离散数学 · 计算机科学 2016-11-22 Abbas Bazzi , Samuel Fiorini , Sangxia Huang , Ola Svensson

We derive a renormalized classical spin (RCS) theory for $S > 1/2$ quantum magnets by constraining a generalized classical theory that includes all multipolar fluctuations to a reduced CP$^1$ phase space of dipolar SU($2$) coherent states.…

强关联电子 · 物理学 2023-09-11 David Dahlbom , Hao Zhang , Zoha Laraib , Daniel M. Pajerowski , Kipton Barros , Cristian Batista

In this paper, we are concerned with regularized regression problems where the prior regularizer is a proper lower semicontinuous and convex function which is also partly smooth relative to a Riemannian submanifold. This encompasses as…

We first review the method to calculate the spectral functions in the functional renormalization group (FRG) approach, which has been recently developed. We also provide the numerical stability conditions given by the present authors for a…

高能物理 - 唯象学 · 物理学 2016-11-22 Takeru Yokota , Teiji Kunihiro , Kenji Morita

The eigenfunctions of the Laplace Beltrami operator (Manifold Harmonics) define a function basis that can be used in spectral analysis on manifolds. In [21] the authors recast the problem as an orthogonality constrained optimization problem…

数值分析 · 数学 2018-04-23 Martin Huska , Damiana Lazzaro , Serena Morigi

Optimizing non-convex functions is a fundamental challenge across machine learning and combinatorial optimization. We introduce and study $\gamma$-weakly $\theta$-up-concavity, a novel first-order condition that characterizes a broad class…

机器学习 · 计算机科学 2026-05-11 Mohammad Pedramfar , Vaneet Aggarwal

In this work, we propose an optimization framework for estimating a sparse robust one-dimensional subspace. Our objective is to minimize both the representation error and the penalty, in terms of the l1-norm criterion. Given that the…

机器学习 · 统计学 2024-03-07 Xiao Ling , Paul Brooks

Optimization over the Stiefel manifold is a fundamental computational problem in many scientific and engineering applications. Despite considerable research effort, high-dimensional optimization problems over the Stiefel manifold remain…

最优化与控制 · 数学 2025-05-16 Andy Yat-Ming Cheung , Jinxin Wang , Man-Chung Yue , Anthony Man-Cho So

Field-theoretical calculations performed in an approximation scheme often present a spurious dependence of physical quantities on some unphysical parameters associated with the details of the calculation setup (such as, the renormalization…

统计力学 · 物理学 2020-07-08 Ivan Balog , Gonzalo De Polsi , Matthieu Tissier , Nicolás Wschebor

We establish sharp stability results for of non--selfadjoint the ascent and descent spectra under strong resolvent convergence (SRS), a natural framework for finite element approximations of non-selfadjoint and singularly perturbed…

数值分析 · 数学 2025-11-27 Marwa Ennaceur

We introduce a comprehensive framework for the detection and demodulation of covert electromagnetic signals using solid-state spin sensors. Our approach, named RAPID, is a two-stage hybrid strategy that leverages nitrogen-vacancy (NV)…

量子物理 · 物理学 2025-09-11 Amirhossein Taherpour , Abbas Taherpour , Tamer Khattab

Bang-bang control is ubiquitous for Optimal Control Problems (OCPs) where the constrained control variable appears linearly in the dynamics and cost function. Based on the Pontryagin's Minimum Principle, the indirect method is widely used…

最优化与控制 · 数学 2023-12-04 Kun Wang , Zheng Chen , Zhenyu Wei , Fangmin Lu , Jun Li

Previously developed Pade-related method of resummation for QCD observables, which achieves exact renormalization-scale-invariance, is extended so that the scheme-invariance is obtained as well. The dependence on the leading scheme…

高能物理 - 唯象学 · 物理学 2009-10-31 G. Cvetic

We present Neural Stochastic Contraction Metrics (NSCM), a new design framework for provably-stable robust control and estimation for a class of stochastic nonlinear systems. It uses a spectrally-normalized deep neural network to construct…

机器学习 · 计算机科学 2021-01-05 Hiroyasu Tsukamoto , Soon-Jo Chung , Jean-Jacques E. Slotine

High-precision predictions in BSM models require calculations at the loop-level and thus a renormalization of (some of) the BSM parameter. Here many choices for the renormalization scheme (RS) are possible. A given RS can be well suited to…

高能物理 - 唯象学 · 物理学 2023-04-26 S. Heinemeyer , F. von der Pahlen

This paper introduces a novel design method that enhances the force/torque, bendability, and controllability of soft pneumatic actuators (SPAs). The complex structure of the soft actuator is simplified by approximating it as a cantilever…

机器人学 · 计算机科学 2024-04-16 Wu-Te Yang , Burak Kurkcu , Masayoshi Tomizuka

Meshless methods are often used in numerical simulations of systems of partial differential equations (PDEs), particularly those which involve complex geometries or free surfaces. Here we present a novel compact scheme based on the local…

数值分析 · 数学 2026-03-13 Henry M. Broadley , Steven J. Lind , Jack R. C. King

Computed Tomography is one of the efficient and vital modalities of non-destructive techniques (NDT). Various factors influence the CT reconstruction result, including limited projection data, detector electronics optimization, background…

图像与视频处理 · 电气工程与系统科学 2022-05-31 Kajal Kumari , Mayank Goswami

Regularized variants of Principal Components Analysis, especially Sparse PCA and Functional PCA, are among the most useful tools for the analysis of complex high-dimensional data. Many examples of massive data, have both sparse and…

机器学习 · 统计学 2019-08-21 Genevera I. Allen , Michael Weylandt

A kind of least action principle is introduced for the discrete time evolution of one-dimensional quantum lattice models. Based on this principle, we obtain an optimal condition for the matrix product states on succeeding time slices…

统计力学 · 物理学 2007-05-23 Kouji Ueda , Chenglong Jin , Naokazu Shibata , Yasuhiro Hieida , Tomotoshi Nishino