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检索条件"主题词=Lanczos Algorithm"
195 条 记 录,以下是131-140 订阅
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Two new methods for computing vibrational energy levels
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CANADIAN JOURNAL OF CHEMISTRY 2015年 第6期93卷 589-593页
作者: Carrington, Tucker, Jr. Queens Univ Dept Chem Kingston ON K7L 3N6 Canada
I review two new ideas for coping with the size of large product basis sets and large product grids when one computes vibrational energy levels. The first is based on a tensor reduction scheme. It exploits advantages ... 详细信息
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Decentralized Eigenvalue algorithms for Distributed Signal Detection in Wireless Networks
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IEEE TRANSACTIONS ON SIGNAL PROCESSING 2015年 第2期63卷 427-440页
作者: Penna, Federico Stanczak, Slawomir Samsung Mobile Solut Lab MSL San Diego CA 92121 USA Heinrich Hertz Inst Nachrichtentech Berlin GmbH Fraunhofer Inst Telecommun D-10587 Berlin Germany
In this paper, we derive and analyze two algorithms-referred to as decentralized power method (DPM) and decentralized lanczos algorithm (DLA)-for distributed computation of one (the largest) or multiple eigenvalues of... 详细信息
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Comparison of Krylov subspace methods with preconditioning techniques for solving boundary value problems
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COMPUTERS & MATHEMATICS WITH APPLICATIONS 1999年 第11-12期38卷 197-206页
作者: Sundar, S Bhagavan, BK Indian Inst Technol Dept Math Kharagpur 721302 W Bengal India
In this paper, we made an attempt to establish the usefulness of lanczos solver with preconditioning technique over the preconditioned Conjugate Gradient (CG) solvers. We have presented here a detail comparative study... 详细信息
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A reduction algorithm for reconstructing periodic Jacobi matrices in Minkowski spaces
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APPLIED MATHEMATICS AND COMPUTATION 2022年 419卷 126853-126853页
作者: Xu, Wei-Ru Bebiano, Natalia Chen, Guo-Liang Sichuan Normal Univ Laurent Math Ctr Sch Math Sci Chengdu 610066 Peoples R China Univ Coimbra Dept Math CMUC P-3001454 Coimbra Portugal East China Normal Univ Sch Math Sci Shanghai Key Lab PMMP Shanghai 200241 Peoples R China
The periodic Jacobi inverse eigenvalue problem concerns the reconstruction of a periodic Jacobi matrix from prescribed spectral data. In Minkowski spaces, with a given signature operator H = diag(1, 1, ..., 1, -1), th... 详细信息
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Methods for calculating vibrational energy levels
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CANADIAN JOURNAL OF CHEMISTRY 2004年 第6期82卷 900-914页
作者: Carrington, T Univ Montreal Dept Chim Montreal PQ H3C 3J7 Canada
This article reviews new methods for computing vibrational energy levels of small polyatomic molecules. The principal impediment to the calculation of energy levels is the size of the required basis set. If one uses a... 详细信息
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A Krylov subspace projection method for simultaneous solution of Helmholtz problems at multiple frequencies
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COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 2003年 第41-42期192卷 4609-4640页
作者: Wagner, MM Pinsky, PM Oberai, AA Malhotra, M Stanford Univ Div Mech & Computat Stanford CA 94305 USA Boston Univ Dept Aerosp & Mech Engn Boston MA 02215 USA Sun Microsyst Inc Palo Alto CA USA
A Krylov subspace projection method which provides simultaneous solutions of the Helmholtz equation at multiple frequencies in one solution step is presented. The projector is obtained with an unsymmetric block Lanczo... 详细信息
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Use of Non-uniform Grids for Reduced Spatial Sampling in FDTD Simulation
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FREQUENZ 2008年 第7-8期62卷 156-159页
作者: Ramachandran, Aravind Cangellaris, Andreas C. Univ Illinois Dept Elect & Comp Engn Urbana IL 61801 USA
An algorithm for the generation of non-uniform finite-difference grids for the analysis of electrically long wave propagating structures is presented. The methodology is based on the use of a Pade-Chebyshev approximat... 详细信息
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A deflated version of the conjugate gradient algorithm
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SIAM JOURNAL ON SCIENTIFIC COMPUTING 2000年 第5期21卷 1909-1926页
作者: Saad, Y Yeung, M Erhel, J Guyomarc'h, F Univ Minnesota Dept Comp Sci & Engn Minneapolis MN 55455 USA Univ Calif Irvine Dept Math Irvine CA 92697 USA Inst Natl Rech Informat & Automat F-35042 Rennes France
We present a deflated version of the conjugate gradient algorithm for solving linear systems. The new algorithm can be useful in cases when a small number of eigenvalues of the iteration matrix are very close to the o... 详细信息
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Direct calculation of long time correlation functions using an optical potential
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INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY 1998年 第5期68卷 317-328页
作者: Alacid, M Leforestier, C Univ Montpellier 2 UMR 5636 Lab Struct & Dynam Syst Mol & Solides F-34095 Montpellier 05 France
We present an L-2 method aimed at directly computing autocorrelation functions [Phi(0)/Phi(f)] for systems displaying long time recurrences. By making use of a lanczos scheme, as previously proposed by Wyatt [Chem. Ph... 详细信息
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FastSKAT: Sequence kernel association tests for very large sets of markers
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GENETIC EPIDEMIOLOGY 2018年 第6期42卷 516-527页
作者: Lumley, Thomas Brody, Jennifer Peloso, Gina Morrison, Alanna Rice, Kenneth Univ Auckland Dept Stat Auckland New Zealand Univ Washington Cardiovasc Hlth Res Unit Seattle WA 98195 USA Boston Univ Dept Biostat Boston MA 02215 USA Univ Texas Hlth Sci Ctr Houston Houston TX 77030 USA Univ Washington Dept Biostat F-600 Hlth Sci BldgCampus Mail Stop 357232 Seattle WA 98195 USA
The sequence kernel association test (SKAT) is widely used to test for associations between a phenotype and a set of genetic variants that are usually rare. Evaluating tail probabilities or quantiles of the null distr... 详细信息
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