Results 21 to 30 of about 481 (184)
Comparison of Algebraic Multigrid Preconditioners for Solving Helmholtz Equations
Journal of Applied Mathematics, 2012 An algebraic multigrid (AMG) with aggregation technique to coarsen is applied to construct a better preconditioner for solving Helmholtz equations in this paper.
Dandan Chen, Ting-Zhu Huang, Liang Li
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The Mixed Finite Element Multigrid Method for Stokes Equations
The Scientific World Journal, 2015 The stable finite element discretization of the Stokes problem produces a symmetric indefinite system of linear algebraic equations. A variety of iterative solvers have been proposed for such systems in an attempt to construct efficient, fast, and robust
K. Muzhinji, S. Shateyi, S. S. Motsa
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Algebraic Multi-Grid Based Multi-Focus Image Fusion Using Watershed Algorithm
IEEE Access, 2018 This paper proposes a new multi-focus image fusion method named AMGW, and it is based on algebraic multi-grid (AMG) algorithm and watershed segmentation method.
Ying Huang +3 more
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The hp-version of the least-squares collocation method with integral collocation for solving a biharmonic equation [PDF]
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022 A new algorithm for the numerical solution of the biharmonic equation is developed. It is based on the first implemented hp-version of the least-squares collocation method (hp-LSCM) with integral collocations for a fourth-order elliptic equation in ...
Vasily P. Shapeev +2 more
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Remote Sensing, 2016 The algebraic multigrid (AMG) method is used to solve linear systems of equations on a series of progressively coarser grids and has recently attracted significant attention for image segmentation due to its high efficiency and robustness. In this paper,
Haiwei Song, Yi Wang
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On Optimal Algebraic Multigrid Methods
CoRR, 2019 In this note we present an alternative way to obtain optimal interpolation operators for two-grid methods applied to Hermitian positive definite linear systems. Falgout and Vassilevski in [SIAM J. Numer. Anal, 42 (2004), pp. 1669-1693] and Zikatanov [Numer. Linear Algebra Appl., 15 (2008), pp.
Luis García Ramos, Reinhard Nabben
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IEEE Access, 2022 The fast solution of three-dimensional eddy current problems is still an open problem, especially when real-size finite element models with millions of degrees of freedom are considered.
Federico Moro +4 more
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Uniciencia, 2020 This paper presents detailed aspects regarding the implementation of the Finite Element Method (FEM) to solve a Poisson’s equation with homogeneous boundary conditions.
Helen Guillén-Oviedo +3 more
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A new multilevel smoothing method for wavelet-based algebraic multigrid poisson problem solver
Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsIn contrast to the standard algebraic multigrid, the Wavelet-based Algebraic Multigrid method relies more strongly on the smoothing method because the coarse spaces are chosen a priori. So, it is very important to develop new smoother methods, especially
Fabio Henrique Pereira +2 more
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Algebraic multigrid support vector machines [PDF]
CoRR, 2016 The support vector machine is a flexible optimization-based technique widely used for classification problems. In practice, its training part becomes computationally expensive on large-scale data sets because of such reasons as the complexity and number of iterations in parameter fitting methods, underlying optimization solvers, and nonlinearity of ...
Ehsan Sadrfaridpour +5 more
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