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Erratum: Properties of the Solution Set of Absolute Value Equations and the Related Matrix Classes 勘误:绝对值方程解集及相关矩阵类的性质
IF 1.5 2区 数学 Q2 MATHEMATICS, APPLIED Pub Date : 2024-06-26 DOI: 10.1137/24m1635715
Milan Hladík
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 1215-1215, June 2024.
Abstract. A typo in the paper [M. Hladík, SIAM J. Matrix Anal. Appl., 44 (2023), pp. 175–195] is corrected.
SIAM 矩阵分析与应用期刊》,第 45 卷,第 2 期,第 1215-1215 页,2024 年 6 月。 摘要。论文 [M. Hladík, SIAM J. Matrix Anal. Appl., 44 (2023), pp.
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引用次数: 0
Fast and Accurate Randomized Algorithms for Linear Systems and Eigenvalue Problems 线性系统和特征值问题的快速准确随机算法
IF 1.5 2区 数学 Q2 MATHEMATICS, APPLIED Pub Date : 2024-06-20 DOI: 10.1137/23m1565413
Yuji Nakatsukasa, Joel A. Tropp
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 1183-1214, June 2024.
Abstract. This paper develops a class of algorithms for general linear systems and eigenvalue problems. These algorithms apply fast randomized dimension reduction (“sketching”) to accelerate standard subspace projection methods, such as GMRES and Rayleigh–Ritz. This modification makes it possible to incorporate nontraditional bases for the approximation subspace that are easier to construct. When the basis is numerically full rank, the new algorithms have accuracy similar to classic methods but run faster and may use less storage. For model problems, numerical experiments show large advantages over the optimized MATLAB routines, including a [math] speedup over [math] and a [math] speedup over [math].
SIAM 矩阵分析与应用期刊》,第 45 卷,第 2 期,第 1183-1214 页,2024 年 6 月。 摘要本文针对一般线性系统和特征值问题开发了一类算法。这些算法采用快速随机降维("勾勒")来加速标准子空间投影方法,如 GMRES 和 Rayleigh-Ritz。通过这种修改,可以为近似子空间加入更容易构建的非传统基。当基在数值上是满级时,新算法的精度与经典方法相似,但运行速度更快,使用的存储空间也更少。对于模型问题,数值实验表明,优化后的 MATLAB 例程具有很大优势,包括比[math]快[math],比[math]快[math]。
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引用次数: 0
Preconditioner Design via Bregman Divergences 通过布雷格曼发散设计预处理器
IF 1.5 2区 数学 Q1 Mathematics Pub Date : 2024-06-07 DOI: 10.1137/23m1566637
Andreas A. Bock, Martin S. Andersen
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引用次数: 0
A Skew-Symmetric Lanczos Bidiagonalization Method for Computing Several Extremal Eigenpairs of a Large Skew-Symmetric Matrix 计算大型偏斜对称矩阵若干极值特征对的偏斜对称兰克佐斯对角线化方法
IF 1.5 2区 数学 Q1 Mathematics Pub Date : 2024-06-05 DOI: 10.1137/23m1553029
Jinzhi Huang, Zhongxiao Jia
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 1114-1147, June 2024.
Abstract. The spectral decomposition of a real skew-symmetric matrix is shown to be equivalent to a specific structured singular value decomposition (SVD) of the matrix. Based on such equivalence, we propose a skew-symmetric Lanczos bidiagonalization (SSLBD) method to compute extremal singular values and the corresponding singular vectors of the matrix, from which its extremal conjugate eigenpairs are recovered pairwise in real arithmetic. A number of convergence results on the method are established, and accuracy estimates for approximate singular triplets are given. In finite precision arithmetic, it is proven that the semi-orthogonality of each set of the computed left and right Lanczos basis vectors and the semi-biorthogonality of two sets of basis vectors are needed to compute the singular values accurately and to make the method work as if it does in exact arithmetic. A commonly used efficient partial reorthogonalization strategy is adapted to maintain the desired semi-orthogonality and semi-biorthogonality. For practical purpose, an implicitly restarted SSLBD algorithm is developed with partial reorthogonalization. Numerical experiments illustrate the effectiveness and overall efficiency of the algorithm.
SIAM 矩阵分析与应用期刊》,第 45 卷,第 2 期,第 1114-1147 页,2024 年 6 月。 摘要。实偏斜对称矩阵的谱分解等价于矩阵的特定结构奇异值分解(SVD)。基于这种等价性,我们提出了一种计算矩阵极值奇异值和相应奇异向量的偏斜对称兰氏二对角化(SSLBD)方法,并从中用实数演算法成对地恢复出矩阵的极值共轭特征对。建立了该方法的一系列收敛结果,并给出了近似奇异三元组的精度估计值。在有限精度算术中,证明了要精确计算奇异值,并使该方法像在精确算术中一样工作,需要每组计算的左和右 Lanczos 基向量的半正交性和两组基向量的半双正交性。为了保持所需的半正交性和半半双正交性,我们采用了一种常用的高效部分再正交化策略。为实用起见,我们开发了一种隐式重启 SSLBD 算法,并进行了部分再正交化。数值实验说明了该算法的有效性和整体效率。
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引用次数: 0
Differential Geometry with Extreme Eigenvalues in the Positive Semidefinite Cone 正半定锥中具有极值特征值的微分几何
IF 1.5 2区 数学 Q2 MATHEMATICS, APPLIED Pub Date : 2024-06-04 DOI: 10.1137/23m1563906
Cyrus Mostajeran, Nathaël Da Costa, Graham Van Goffrier, Rodolphe Sepulchre
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 1089-1113, June 2024.
Abstract. Differential geometric approaches to the analysis and processing of data in the form of symmetric positive definite (SPD) matrices have had notable successful applications to numerous fields, including computer vision, medical imaging, and machine learning. The dominant geometric paradigm for such applications has consisted of a few Riemannian geometries associated with spectral computations that are costly at high scale and in high dimensions. We present a route to a scalable geometric framework for the analysis and processing of SPD-valued data based on the efficient computation of extreme generalized eigenvalues through the Hilbert and Thompson geometries of the semidefinite cone. We explore a particular geodesic space structure based on Thompson geometry in detail and establish several properties associated with this structure. Furthermore, we define a novel inductive mean of SPD matrices based on this geometry and prove its existence and uniqueness for a given finite collection of points. Finally, we state and prove a number of desirable properties that are satisfied by this mean.
SIAM 矩阵分析与应用期刊》,第 45 卷,第 2 期,第 1089-1113 页,2024 年 6 月。 摘要。以对称正定(SPD)矩阵形式分析和处理数据的微分几何方法在计算机视觉、医学成像和机器学习等众多领域都有显著的成功应用。此类应用的主流几何范式包括一些与光谱计算相关的黎曼几何图形,这些几何图形在高尺度和高维度下耗费巨大。我们通过半定锥的希尔伯特和汤普森几何图形,在高效计算极端广义特征值的基础上,为分析和处理 SPD 值数据提出了一个可扩展的几何框架。我们详细探讨了基于汤普森几何的特定大地空间结构,并建立了与该结构相关的若干属性。此外,我们还基于这种几何结构定义了一种新颖的 SPD 矩阵归纳平均值,并证明了它对于给定有限点集合的存在性和唯一性。最后,我们陈述并证明了该均值所满足的一系列理想属性。
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引用次数: 0
Riemannian Preconditioned Coordinate Descent for Low Multilinear Rank Approximation 用于低多线性秩逼近的黎曼预条件坐标后退法
IF 1.5 2区 数学 Q1 Mathematics Pub Date : 2024-05-21 DOI: 10.1137/21m1463896
Mohammad Hamed, Reshad Hosseini
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 1054-1075, June 2024.
Abstract. This paper presents a memory-efficient, first-order method for low multilinear rank approximation of high-order, high-dimensional tensors. In our method, we exploit the second-order information of the cost function and the constraints to suggest a new Riemannian metric on the Grassmann manifold. We use a Riemmanian coordinate descent method for solving the problem and also provide a global convergence analysis matching that of the coordinate descent method in the Euclidean setting. We also show that each step of our method with the unit step size is actually a step of the orthogonal iteration algorithm. Experimental results show the computational advantage of our method for high-dimensional tensors.
SIAM 矩阵分析与应用期刊》,第 45 卷,第 2 期,第 1054-1075 页,2024 年 6 月。 摘要本文提出了一种内存高效的一阶方法,用于高阶高维张量的低多线性秩逼近。在我们的方法中,我们利用代价函数和约束条件的二阶信息,在格拉斯曼流形上提出了一个新的黎曼度量。我们使用黎曼坐标下降法来解决问题,并提供了与欧几里得坐标下降法相匹配的全局收敛分析。我们还证明,我们方法中单位步长的每一步实际上都是正交迭代算法的一步。实验结果表明,我们的方法对高维张量具有计算优势。
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引用次数: 0
Probabilistic Rounding Error Analysis of Modified Gram–Schmidt 修正格拉姆-施密特的概率舍入误差分析
IF 1.5 2区 数学 Q1 Mathematics Pub Date : 2024-05-21 DOI: 10.1137/23m1585817
Qinmeng Zou
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引用次数: 0
Parameterized Interpolation of Passive Systems 被动系统的参数化内插法
IF 1.5 2区 数学 Q1 Mathematics Pub Date : 2024-05-20 DOI: 10.1137/23m1580528
Peter Benner, Pawan Goyal, Paul Van Dooren
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 1035-1053, June 2024.
Abstract. We study the tangential interpolation problem for a passive transfer function in standard state-space form. We derive new interpolation conditions based on the computation of a deflating subspace associated with a selection of spectral zeros of a parameterized para-Hermitian transfer function. We show that this technique improves the robustness of the low order model and that it can also be applied to nonpassive systems, provided they have sufficiently many spectral zeros in the open right half-plane. We analyze the accuracy needed for the computation of the deflating subspace, in order to still have a passive lower order model and we derive a novel selection procedure of spectral zeros in order to obtain low order models with a small approximation error.
SIAM 矩阵分析与应用期刊》,第 45 卷,第 2 期,第 1035-1053 页,2024 年 6 月。 摘要我们研究了标准状态空间形式下被动传递函数的切向插值问题。我们在计算与参数化准赫米蒂传递函数谱零点选择相关的放缩子空间的基础上,推导出新的插值条件。我们的研究表明,这种技术提高了低阶模型的鲁棒性,而且只要非被动系统在开放的右半平面上有足够多的谱零点,这种技术也可以应用于非被动系统。我们分析了计算放缩子空间所需的精确度,以便仍能获得被动低阶模型,并推导出一种新颖的谱零点选择程序,以获得近似误差较小的低阶模型。
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引用次数: 0
Spectral Analysis of Preconditioned Matrices Arising from Stage-Parallel Implicit Runge–Kutta Methods of Arbitrarily High Order 任意高阶阶段并行隐式 Runge-Kutta 方法产生的预条件矩阵的频谱分析
IF 1.5 2区 数学 Q1 Mathematics Pub Date : 2024-05-13 DOI: 10.1137/23m1552498
Ivo Dravins, Stefano Serra-Capizzano, Maya Neytcheva
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 1007-1034, June 2024.
Abstract. The use of high order fully implicit Runge–Kutta methods is of significant importance in the context of the numerical solution of transient partial differential equations, in particular when solving large scale problems due to fine space resolution with many millions of spatial degrees of freedom and long time intervals. In this study we consider strongly [math]-stable implicit Runge–Kutta methods of arbitrary order of accuracy, based on Radau quadratures, for which efficient preconditioners have been introduced. A refined spectral analysis of the corresponding matrices and matrix sequences is presented, both in terms of localization and asymptotic global distribution of the eigenvalues. Specific expressions of the eigenvectors are also obtained. The given study fully agrees with the numerically observed spectral behavior and substantially improves the theoretical studies done in this direction so far. Concluding remarks and open problems end the current work, with specific attention to the potential generalizations of the hereby suggested general approach.
SIAM 矩阵分析与应用期刊》,第 45 卷第 2 期,第 1007-1034 页,2024 年 6 月。 摘要。高阶全隐式 Runge-Kutta 方法的使用在瞬态偏微分方程数值求解中具有重要意义,特别是在求解具有数百万空间自由度和长时间跨度的精细空间分辨率的大规模问题时。在本研究中,我们考虑了基于 Radau quadratures 的任意精度阶的强[数学]稳定隐式 Runge-Kutta 方法,并引入了高效预处理。从特征值的局部分布和渐近全局分布两个方面,对相应矩阵和矩阵序列进行了精细的谱分析。同时还获得了特征向量的具体表达式。所给出的研究完全符合数值观测到的频谱行为,并大大改进了迄今为止在此方向上所做的理论研究。结束语和有待解决的问题结束了当前的工作,并特别关注了本文提出的一般方法的潜在概括性。
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引用次数: 0
A Note on the Randomized Kaczmarz Algorithm for Solving Doubly Noisy Linear Systems 关于解决双噪声线性系统的随机卡兹马兹算法的说明
IF 1.5 2区 数学 Q1 Mathematics Pub Date : 2024-05-06 DOI: 10.1137/23m155712x
El Houcine Bergou, Soumia Boucherouite, Aritra Dutta, Xin Li, Anna Ma
SIAM Journal on Matrix Analysis and Applications, Volume 45, Issue 2, Page 992-1006, June 2024.
Abstract. Large-scale linear systems, [math], frequently arise in practice and demand effective iterative solvers. Often, these systems are noisy due to operational errors or faulty data-collection processes. In the past decade, the randomized Kaczmarz algorithm (RK) has been studied extensively as an efficient iterative solver for such systems. However, the convergence study of RK in the noisy regime is limited and considers measurement noise in the right-hand side vector, [math]. Unfortunately, in practice, that is not always the case; the coefficient matrix [math] can also be noisy. In this paper, we analyze the convergence of RK for doubly noisy linear systems, i.e., when the coefficient matrix, [math], has additive or multiplicative noise, and [math] is also noisy. In our analyses, the quantity [math] influences the convergence of RK, where [math] represents a noisy version of [math]. We claim that our analysis is robust and realistically applicable, as we do not require information about the noiseless coefficient matrix, [math], and by considering different conditions on noise, we can control the convergence of RK. We perform numerical experiments to substantiate our theoretical findings.
SIAM 矩阵分析与应用期刊》,第 45 卷第 2 期,第 992-1006 页,2024 年 6 月。 摘要。大规模线性系统[math]在实践中经常出现,需要有效的迭代求解器。通常情况下,由于操作失误或数据收集过程有误,这些系统会产生噪声。在过去的十年中,随机 Kaczmarz 算法(RK)作为此类系统的高效迭代求解器得到了广泛的研究。然而,RK 算法在噪声环境下的收敛性研究是有限的,并且考虑了右侧矢量的测量噪声[数学]。遗憾的是,实际情况并非总是如此;系数矩阵 [math] 也可能是有噪声的。在本文中,我们分析了双噪声线性系统的 RK 收敛性,即系数矩阵 [math] 存在加法或乘法噪声,且 [math] 也存在噪声时的收敛性。在我们的分析中,[math] 这个量会影响 RK 的收敛性,其中 [math] 表示 [math] 的噪声版本。我们声称,我们的分析是稳健和现实适用的,因为我们不需要无噪声系数矩阵 [math] 的信息,而且通过考虑噪声的不同条件,我们可以控制 RK 的收敛性。我们进行了数值实验来证实我们的理论发现。
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SIAM Journal on Matrix Analysis and Applications
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