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检索条件"主题词=Lanczos Algorithm"
194 条 记 录,以下是111-120 订阅
排序:
On stabilization and convergence of clustered Ritz values in the lanczos method
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SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS 2005年 第3期27卷 891-908页
作者: Wülling, W Univ Bielefeld Fak Math D-33501 Bielefeld Germany
The lanczos algorithm can be considered as an iterative method for finding a few eigenvalues and eigenvectors of large sparse symmetric matrices. In the present paper we solve a conjecture posed by Zdenek Strakos and ... 详细信息
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The stabilization of weights in the lanczos and Conjugate Gradient method
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BIT NUMERICAL MATHEMATICS 2005年 第2期45卷 395-414页
作者: Wülling, W Univ Bielefeld Fak Math D-33501 Bielefeld Germany
The lanczos and the Conjugate Gradient method both compute implicitly a sequence of Gauss quadrature approximations to a certain Riemann-Stieltjes integral. In finite precision computations the corresponding weight fu... 详细信息
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An orthogonal similarity reduction of a matrix into semiseparable form
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SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS 2005年 第1期27卷 176-197页
作者: Van Barel, M Vandebril, R Mastronardi, N Katholieke Univ Leuven Dept Comp Sci B-3001 Louvain Heverlee Belgium CNR Sez Bari Ist Applicaz Calcolo M Picone I-70126 Bari Italy
An algorithm to reduce a symmetric matrix to a similar semiseparable one of semiseparability rank 1, using orthogonal similarity transformations, is proposed in this paper. It is shown that, while running to completio... 详细信息
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Convergence of polynomial restart Krylov methods for eigenvalue computations
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SIAM REVIEW 2005年 第3期47卷 492-515页
作者: Beattie, CA Embree, M Sorensen, DC Virginia Polytech Inst & State Univ Dept Math Blacksburg VA 24061 USA Rice Univ Dept Computat & Appl Math Houston TX 77005 USA
Krylov subspace methods have led to reliable and effective tools for resolving large-scale, non-Hermitian eigenvalue problems. Since practical considerations often limit the dimension of the approximating Krylov subsp... 详细信息
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On the construction of a reduced rank square-root Kalman filter for efficient uncertainty propagation
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FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE 2005年 第7期21卷 1047-1055页
作者: Treebushny, D Madsen, H NAS Ukraine Inst Math Machines & Syst Problems Kiev Ukraine Danish Hydraul Inst Water & Environm DK-2970 Horsholm Denmark
The Kalman filter is a sequential estimation procedure that combines a stochastic dynamical model with observations in order to update the model state and the associated uncertainty. In the situation where no measurem... 详细信息
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On the construction of a reduced rank square-root Kalman filter for efficient uncertainty propagation
On the construction of a reduced rank square-root Kalman fil...
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International Conference on Computational Sciences
作者: Treebushny, D Madsen, H NAS Ukraine Inst Math Machines & Syst Problems Kiev Ukraine Danish Hydraul Inst Water & Environm DK-2970 Horsholm Denmark
The Kalman filter is a sequential estimation procedure that combines a stochastic dynamical model with observations in order to update the model state and the associated uncertainty. In the situation where no measurem... 详细信息
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A Krylov subspace method for information retrieval
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SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS 2004年 第2期26卷 566-582页
作者: Blom, K Ruhe, A Chalmers Dept Comp Sci SE-41296 Gothenburg Sweden Univ Gothenburg SE-41296 Gothenburg Sweden Royal Inst Technol Dept Numer Anal & Comp Sci NADA SE-10044 Stockholm Sweden
A new algorithm for information retrieval is described. It is a vector space method with automatic query expansion. The original user query is projected onto a Krylov subspace generated by the query and the term-docum... 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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External selective orthogonalization for the lanczos algorithm in distributed memory environments
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PARALLEL COMPUTING 2001年 第7期27卷 913-923页
作者: Cooper, A Szularz, M Weston, J Univ Ulster Sch Informat & Software Engn Coleraine BT52 1SA Londonderry North Ireland
The k-step explicit restart lanczos algorithm, LExpRes, for the computation of a few of the extreme eigenpairs of large, usually sparse, symmetric matrices, computes one eigenpair at a time using a deflation technique... 详细信息
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Theoretical studies of (A)over-tilde1A" → (X)over-tilde1A′ resonance emission spectra of HCN/DCN using single lanczos propagation method
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JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2003年 第4期2卷 639-648页
作者: Xu, DG Guo, H Xie, DQ Univ New Mexico Dept Chem Albuquerque NM 87131 USA Nanjing Univ Dept Chem Nanjing 210008 Jiangsu Peoples R China Nanjing Univ Inst Theoret & Computat Chem Nanjing 210008 Jiangsu Peoples R China Sichuan Univ Dept Chem Chengdu Sichuan Peoples R China
Using an efficient single lanczos propagation method, we report the (A) over tilde (1)A", (X) over tilde (1)A' resonance emission spectra of HCN and DCN from a number of low-lying vibrational levels of the A-... 详细信息
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