Stochastic collocation on unstructured multivariate meshes

Stochastic collocation on unstructured multivariate meshes
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非结构化多元网格上的随机搭配

DOI:
10.4208/cicp.020215.070515a
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发表时间:
2015-01
期刊:
Commun. Comput. Phys.
影响因子:
--
通讯作者:
T. Zhou
T. Zhou
中科院分区:
其他
文献类型:
--
作者:
A. Narayan;T. Zhou

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配置已经成为不确定性量化(UQ)社区中参数化系统近似的标准工具。用于最小二乘正则化、压缩采样恢复和插值重建的技术正在成为各种应用中使用的标准工具。配置网格的选择往往是一个挑战,但构造几何“非结构化”配置网格的方法已显示出巨大的潜力,由于有吸引力的理论属性和直接,简单的生成和实施。我们调查这些网格的属性,提出的稳定性和准确性的结果,可以用来作为指导生成随机配置网格在多个维度。
Collocation has become a standard tool for approximation of parameterized systems in the uncertainty quantification (UQ) community. Techniques for least-squares regularization, compressive sampling recovery, and interpolatory reconstruction are becoming standard tools used in a variety of applications. Selection of a collocation mesh is frequently a challenge, but methods that construct geometrically "unstructured" collocation meshes have shown great potential due to attractive theoretical properties and direct, simple generation and implementation. We investigate properties of these meshes, presenting stability and accuracy results that can be used as guides for generating stochastic collocation grids in multiple dimensions.
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