Adaptive Low-Rank Approximations for Operator Equations: Accuracy Control and Computational Complexity
Adaptive Low-Rank Approximations for Operator Equations: Accuracy Control and Computational Complexity
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算子方程的自适应低阶近似:精度控制和计算复杂性
DOI:
10.1090/conm/754/15151
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Dahmen, W.
中科院分区:
文献类型:
--
作者:
Bachmayr, M.;Dahmen, W.
The challenge of mastering computational tasks of enormous size tends to frequently override questioning the quality of the numerical outcome in terms of accuracy. By this we do not mean the accuracy within the discrete setting, which itself may also be far from evident for ill-conditioned problems or when iterative solvers are involved. By accuracy-controlled computation we mean the deviation of the numerical approximation from the exact solution of an underlying continuous problem in a relevant metric, which has been the initiating interest in the first place. Can the accuracy of a numerical result be rigorously certified - a question that is particularly important in the context of uncertainty quantification, when many possible sources of uncertainties interact. This is the guiding question throughout this article, which reviews recent developments of low-rank approximation methods for problems in high spatial dimensions. In particular, we highlight the role of adaptivity when dealing with such strongly nonlinear methods that integrate in a natural way issues of discrete and continuous accuracy.
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影响因子:
3
作者:
M. Bachmayr;R. Schneider
通讯作者:
R. Schneider
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
M. Bachmayr;A. Cohen;G. Migliorati
通讯作者:
G. Migliorati
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
M. Bachmayr;A. Cohen;W. Dahmen
通讯作者:
W. Dahmen
DOI:
10.1090/mcom/3132
发表时间:
2015
期刊:
Math. Comput.
影响因子:
--
作者:
M. Bachmayr;A. Cohen
通讯作者:
A. Cohen
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
I. Gavrilyuk;W. Hackbusch;B. Khoromskij
通讯作者:
B. Khoromskij