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中国科学院数学与系统科学研究院机构知识库
KMS Of Academy of mathematics and systems sciences, CAS
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An efficient cascadic multigrid solver for 3-D magnetotelluric forward modelling problems using potentials
期刊论文
GEOPHYSICAL JOURNAL INTERNATIONAL, 2022, 卷号: 230, 期号: 3, 页码: 1834-1851
Authors:
Pan, Kejia
;
Wang, Jinxuan
;
Hu, Shuanggui
;
Ren, Zhengyong
;
Cui, Tao
;
Guo, Rongwen
;
Tang, Jingtian
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View/Download:30/0
  |  
Submit date:2023/02/07
Electrical properties
Magnetotellurics
Numerical modelling
Numerical solutions
A NEW ADAPTIVE SUBSPACE MINIMIZATION THREE-TERM CONJUGATE GRADIENT ALGORITHM FOR UNCONSTRAINED OPTIMIZATION
期刊论文
JOURNAL OF COMPUTATIONAL MATHEMATICS, 2021, 卷号: 39, 期号: 2, 页码: 159-177
Authors:
Zhang, Keke
;
Liu, Hongwei
;
Liu, Zexian
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View/Download:110/0
  |  
Submit date:2021/01/14
Conjugate gradient method
Nonmonotone line search
Subspace minimization
Sufficient descent condition
Global convergence
NUMERICAL INVESTIGATION OF ENSEMBLE METHODS WITH BLOCK ITERATIVE SOLVERS FOR EVOLUTION PROBLEMS
期刊论文
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, 2020, 卷号: 25, 期号: 12, 页码: 4905-4923
Authors:
Ju, Lili
;
Leng, Wei
;
Wang, Zhu
;
Yuan, Shuai
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View/Download:120/0
  |  
Submit date:2021/01/14
Ensemble method
ensemble-based time stepping
block CG
block GMRES
iterative linear solver
New subspace minimization conjugate gradient methods based on regularization model for unconstrained optimization
期刊论文
NUMERICAL ALGORITHMS, 2020, 页码: 34
Authors:
Zhao, Ting
;
Liu, Hongwei
;
Liu, Zexian
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View/Download:108/0
  |  
Submit date:2021/01/14
Conjugate gradient method
p-regularization model
Subspace technique
Nonmonotone line search
Unconstrained optimization
A Rigorous Condition Number Estimate of an Immersed Finite Element Method
期刊论文
JOURNAL OF SCIENTIFIC COMPUTING, 2020, 卷号: 83, 期号: 2, 页码: 23
Authors:
Wang, Saihua
;
Wang, Feng
;
Xu, Xuejun
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View/Download:114/0
  |  
Submit date:2020/06/30
Interface problem
IFE method
Condition number
Fast matrix splitting preconditioners for higher dimensional spatial fractional diffusion equations
期刊论文
JOURNAL OF COMPUTATIONAL PHYSICS, 2020, 卷号: 404, 页码: 13
Authors:
Bai, Zhong-Zhi
;
Lu, Kang-Ya
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  |  
View/Download:116/0
  |  
Submit date:2020/05/24
Spatial fractional diffusion equations
Shifted finite-difference discretization
Block Toeplitz-like matrix
Block circulant-like matrix
Preconditioning
Eigenvalue distribution
A NOVEL LEAST SQUARES METHOD FOR HELMHOLTZ EQUATIONS WITH LARGE WAVE NUMBERS
期刊论文
SIAM JOURNAL ON NUMERICAL ANALYSIS, 2020, 卷号: 58, 期号: 5, 页码: 3091-3123
Authors:
Hu, Qiya
;
Song, Rongrong
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View/Download:111/0
  |  
Submit date:2021/01/14
Helmholtz equations
inhomogeneous media
large wave number
auxiliary unknowns
least squares
error estimates
preconditioner
An improved Dai-Kou conjugate gradient algorithm for unconstrained optimization
期刊论文
COMPUTATIONAL OPTIMIZATION AND APPLICATIONS, 2019, 页码: 23
Authors:
Liu, Zexian
;
Liu, Hongwei
;
Dai, Yu-Hong
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  |  
View/Download:115/0
  |  
Submit date:2020/05/24
Conjugate gradient algorithm
Limited memory
Quasi-Newton method
Preconditioned conjugate gradient algorithm
Global convergence
Elastic full waveform inversion on unstructured meshes by the finite element method
期刊论文
PHYSICA SCRIPTA, 2019, 卷号: 94, 期号: 11, 页码: 16
Authors:
Zhang, Wensheng
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View/Download:128/0
  |  
Submit date:2019/10/28
unstructured triangular meshes
elastic wave
full waveform inversion
finite element method
iterative Tikhonov regularization
irregular topography
conjugate gradient method
On multistep Rayleigh quotient iterations for Hermitian eigenvalue problems
期刊论文
COMPUTERS & MATHEMATICS WITH APPLICATIONS, 2019, 卷号: 77, 期号: 9, 页码: 2396-2406
Authors:
Bai, Zhong-Zhi
;
Miao, Cun-Qiang
;
Jian, Shuai
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View/Download:122/0
  |  
Submit date:2020/01/10
Hermitian eigenvalue problem
Rayleigh quotient iteration
Multistep modification
Inexact solve
Preconditioning