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检索条件"主题词=Lanczos algorithm"
194 条 记 录,以下是81-90 订阅
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The vibration-rotation-tunneling spectrum of the polar and T-shaped-N-in isomers of (NNO)2
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JOURNAL OF MOLECULAR SPECTROSCOPY 2011年 第1-2期268卷 53-65页
作者: Wang, Xiao-Gang Carrington, Tucker, Jr. Dawes, Richard Jasper, Ahren W. Queens Univ Dept Chem Kingston ON K7L 3N6 Canada Missouri Univ Sci & Technol Rolla MO 65401 USA Sandia Natl Labs Combust Res Facil Livermore CA 94551 USA
In this paper we report transition frequencies and line strengths computed for bright states of the NNO dimer. We use a previously reported potential obtained from explicitly correlated coupled-cluster calculations an... 详细信息
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ON EFFICIENT NUMERICAL APPROXIMATION OF THE BILINEAR FORM c* A-1b
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SIAM JOURNAL ON SCIENTIFIC COMPUTING 2011年 第2期33卷 565-587页
作者: Strakos, Zdenek Tichy, Petr Charles Univ Prague Fac Math & Phys Prague 18675 Czech Republic Acad Sci Czech Republic Inst Comp Sci Prague 18207 Czech Republic
Let A is an element of C-NxN be a nonsingular complex matrix and b and c be complex vectors of length N. The goal of this paper is to investigate approaches for efficient approximations of the bilinear form c* A(-1)b.... 详细信息
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Theoretical study of the rovibrational spectrum of He2-OCS
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CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE 2010年 第8期88卷 779-786页
作者: Wang, Xiao-Gang Carrington, Tucker, Jr. Queens Univ Dept Chem Kingston ON K7L 3N6 Canada
We report calculated microwave and infrared rovibrational transitions of the van der Waals complex He-2 - OCS. The calculations were done using a product basis, a lanczos eigensolver, and potentials built from He-OCS,... 详细信息
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An Ab Initio Potential Energy Surface and Vibrational Energy Levels of ZnH2
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JOURNAL OF COMPUTATIONAL CHEMISTRY 2010年 第5期31卷 986-993页
作者: Huang, Zheng Guo Yu, Lei Dai, Yu Mei Tianjin Normal Univ Chem & Life Sci Coll Tianjin Key Lab Struct & Performance Funct Mol Tianjin 300387 Peoples R China
A three-dimensional potential energy surface of the electronic (,round state of ZnH2 (X-1 Sigma(+)(g)) molecule is constructed front more than 7500 ab initio points calculated at the internally contracted multireferen... 详细信息
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Quadrature rule-based bounds for functions of adjacency matrices
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LINEAR ALGEBRA AND ITS APPLICATIONS 2010年 第3期433卷 637-652页
作者: Benzi, Michele Boito, Paola Emory Univ Dept Math & Comp Sci Atlanta GA 30322 USA
Bounds for entries of matrix functions based on Gauss-type quadrature rules are applied to adjacency matrices associated with graphs. This technique allows to develop inexpensive and accurate upper and lower bounds fo... 详细信息
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Characterization of Sparse-Array detection Photoacoustic Tomography using the Singular Value Decomposition
Characterization of Sparse-Array detection Photoacoustic Tom...
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Conference on Photons Plus Ultrasound - Imaging and Sensing 2010
作者: Chaudhary, G. Roumeliotis, M. Ephrat, P. Stodilka, R. Carson, J. J. L. Anastasio, M. A. IIT Med Imaging Res Ctr Dept Elect & Comp Engn Chicago IL 60616 USA IIT Med Imaging Res Ctr Dept Biomed Engn Chicago IL 60616 USA St Josephs Hlth Care Lawson Hlth Res Inst Imaging Program London ON N6A 4V2 Canada Univ West Ontario Dept Med Biophys London ON N6A 5C1 Canada
A photoacoustic tomography (PAT) method that employs a sparse two-dimentional (2D) array of detector elements has recently been employed to reconstruct images of simple objects from highly incomplete measurement data.... 详细信息
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Steady-state response by finite-difference time-domain method and lanczos algorithm
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IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 2006年 第7期54卷 3038-3044页
作者: Huang, Ting-Yi Wu, Ruey-Beei Natl Taiwan Univ Dept Elect Engn Taipei 106 Taiwan Natl Taiwan Univ Grad Inst Commun Engn Taipei 106 Taiwan
A hybrid method combining the finite-difference time-domain (FDTD) method and lanczos algorithm is proposed for efficiently obtaining the steady-state response for closed systems. With the lanczos algorithm, modes of ... 详细信息
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Fast Approximate kNN Graph Construction for High Dimensional Data via Recursive lanczos Bisection
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JOURNAL OF MACHINE LEARNING RESEARCH 2009年 第9期10卷 1989-2012页
作者: Chen, Jie Fang, Haw-ren Saad, Yousef Univ Minnesota Dept Comp Sci & Engn Minneapolis MN 55455 USA Argonne Natl Lab Div Math & Comp Sci Argonne IL 60439 USA
Nearest neighbor graphs are widely used in data mining and machine learning. A brute-force method to compute the exact kNN graph takes Theta(dn(2)) time for n data points in the d dimensional Euclidean space. We propo... 详细信息
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lanczos Vectors versus Singular Vectors for Effective Dimension Reduction
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IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING 2009年 第8期21卷 1091-1103页
作者: Chen, Jie Saad, Yousef Univ Minnesota Dept Comp Sci & Engn Minneapolis MN 55455 USA
This paper takes an in-depth look at a technique for computing filtered matrix-vector (mat-vec) products which are required in many data analysis applications. In these applications, the data matrix is multiplied by a... 详细信息
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An extension of the conjugate residual method to nonsymmetric linear systems
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JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS 2009年 第1期226卷 103-113页
作者: Sogabe, T. Sugihara, M. Zhang, S. -L. Nagoya Univ Dept Computat Sci & Engn Chikusa Ku Nagoya Aichi 4648603 Japan Univ Tokyo Dept Math Informat Bunkyo Ku Tokyo 1138656 Japan
The Conjugate Gradient (CG) method and the Conjugate Residual (CR) method are Krylov subspace methods for solving symmetric (positive definite) linear systems. To solve nonsymmetric linear systems, the Bi-Conjugate Gr... 详细信息
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