Results 11 to 20 of about 505,655 (294)
Testing weighted splitting schemes on a one-column transport-chemistry model [PDF]
, 2004 In many transport-chemistry models, a huge system of ODE’s of the advection-diffusion-reaction type has to be integrated in time. Typically, this is done with the help of operator splitting.
Botchev, M.A., Farago, I., Havasi, A.
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SIMETRISASI BENTUK KANONIK JORDAN
Barekeng, 2021 If the characteristic polynomial of a linear operator is completely factored in scalar field of then Jordan canonical form of can be converted to its rational canonical form of , and vice versa.
Darlena Darlena, Ari Suparwanto
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Matrix partitions of split graphs
Discrete Applied Mathematics, 2014 Matrix partition problems generalize a number of natural graph partition problems, and have been studied for several standard graph classes. We prove that each matrix partition problem has only finitely many minimal obstructions for split graphs. Previously such a result was only known for the class of cographs.
Tomás Feder, Pavol Hell, Oren Shklarsky
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A Generalized Matrix Splitting Algorithm
CoRR, 2018 Composite function minimization captures a wide spectrum of applications in both computer vision and machine learning. It includes bound constrained optimization, $\ell_1$ norm regularized optimization, and $\ell_0$ norm regularized optimization as special cases.
Ganzhao Yuan +3 more
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Splitting numerical integration for matrix completion
CoRR, 2022 Low rank matrix approximation is a popular topic in machine learning. In this paper, we propose a new algorithm for this topic by minimizing the least-squares estimation over the Riemannian manifold of fixed-rank matrices. The algorithm is an adaptation of classical gradient descent within the framework of optimization on manifolds.
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Excited Baryons in Lattice QCD [PDF]
, 2002 We present first results for the masses of positive and negative parity excited baryons calculated in lattice QCD using an O(a^2)-improved gluon action and a fat-link irrelevant clover (FLIC) fermion action in which only the irrelevant operators are ...
A. G. Williams +63 more
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A Data-Driven Parameter Prediction Method for HSS-Type Methods
Mathematics, 2022 Some matrix-splitting iterative methods for solving systems of linear equations contain parameters that need to be specified in advance, and the choice of these parameters directly affects the efficiency of the corresponding iterative methods. This paper
Kai Jiang, Jianghao Su, Juan Zhang
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A matrix formulation for small-x singlet evolution [PDF]
, 2007 We propose a matrix evolution equation in (x,kt)-space for flavour singlet, unintegrated quark and gluon densities, which generalizes DGLAP and BFKL equations in the relevant limits.
Anna M Staśto +16 more
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A new generalized shift-splitting method for nonsymmetric saddle point problems
Advances in Mechanical Engineering, 2022 Recently, Huang and Huang [ Journal of Computational and Applied Mathematics , 328 (2018) 381–399] proposed a modified generalized shift-splitting preconditioned (denoted by MGSSP) method for solving large sparse saddle point problems, and gave the ...
Tao Wei, Li-Tao Zhang
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Unifying time evolution and optimization with matrix product states [PDF]
, 2015 We show that the time-dependent variational principle provides a unifying framework for time-evolution methods and optimisation methods in the context of matrix product states.
Haegeman, Jutho +4 more
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