To Be or Not to be Intrusive? The Solution of Parametric and Stochastic Equations - Proper Generalized Decomposition
To Be or Not to be Intrusive? The Solution of Parametric and Stochastic Equations - Proper Generalized Decomposition
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DOI:
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发表时间:
2014
影响因子:
3.1
通讯作者:
A. Nouy
中科院分区:
文献类型:
--
作者:
L. Giraldi;Dishi Liu;H. Matthies;A. Nouy
A numerical method is proposed to compute a low-rank Galerkin approximation to the solution of a parametric or stochastic equation in a nonintrusive fashion. The considered nonlinear problems are associated with the minimization of a parameterized differentiable convex functional. We first introduce a bilinear parameterization of fixed-rank tensors and employ an alternating minimization scheme for computing the low-rank approximation. In keeping with the idea of nonintrusiveness, at each step of the algorithm the minimizations are carried out with a quasi-Newton method to avoid the computation of the Hessian. The algorithm is made nonintrusive through the use of numerical integration. It only requires the evaluation of residuals at specific parameter values. The algorithm is then applied to two numerical examples.
DOI:
10.1007/978-3-642-31703-3_2
发表时间:
2013
期刊:
影响因子:
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作者:
M. Espig;W. Hackbusch;A. Litvinenko;H. G. Matthies;E. Zander
通讯作者:
E. Zander
DOI:
10.1016/j.camwa.2012.10.008
发表时间:
2014
期刊:
Comput. Math. Appl.
影响因子:
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作者:
M. Espig;W. Hackbusch;A. Litvinenko;H. G. Matthies;P. Wähnert
通讯作者:
P. Wähnert
DOI:
10.1137/130942802
发表时间:
2013-09
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
L. Giraldi;A. Litvinenko;Dishi Liu;H. Matthies;A. Nouy
通讯作者:
L. Giraldi;A. Litvinenko;Dishi Liu;H. Matthies;A. Nouy