Discovering variable fractional orders of advection-dispersion equations from field data using multi-fidelity Bayesian optimization
Discovering variable fractional orders of advection-dispersion equations from field data using multi-fidelity Bayesian optimization
复制标题
使用多保真贝叶斯优化从现场数据发现平流弥散方程的可变分数阶
DOI:
10.1016/j.jcp.2017.07.052
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发表时间:
2017-11
影响因子:
4.1
通讯作者:
George Em Karniadakis
中科院分区:
文献类型:
--
作者:
Guofei Pang;Paris Perdikaris;Wei Cai;George Em Karniadakis
The fractional advection–dispersion equation (FADE) can describe accurately the solute transport in groundwater but its fractional order has to be determineda priori. Here, we employ multi-fidelity Bayesian optimization to obtain the fractional order under various conditions, and we obtain more accurate results compared to previously published data. Moreover, the present method is very efficient as we use different levels of resolution to construct a stochastic surrogate model and quantify its uncertainty. We consider two different problem set ups. In the first set up, we obtain variable fractional orders of one-dimensional FADE, considering both synthetic and field data. In the second set up, we identify constant fractional orders of two-dimensional FADE using synthetic data. We employ multi-resolution simulations using two-level and three-level Gaussian process regression models to construct the surrogates.
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DOI:
10.1137/140965144
发表时间:
2015-06
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
Liang Yan;Ling Guo
通讯作者:
Liang Yan;Ling Guo
影响因子:
2.5
作者:
E. Ziegel
通讯作者:
E. Ziegel
DOI:
10.1103/physreve.59.5026
发表时间:
1999-05
期刊:
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
影响因子:
--
作者:
M. Meerschaert;D. Benson;Boris Bäumer
通讯作者:
M. Meerschaert;D. Benson;Boris Bäumer
DOI:
--
发表时间:
2004-12
期刊:
--
影响因子:
--
作者:
A. Schwaighofer;Volker Tresp;Kai Yu
通讯作者:
A. Schwaighofer;Volker Tresp;Kai Yu
影响因子:
4.7
作者:
Yong Zhang;D. Benson;D. Reeves
通讯作者:
Yong Zhang;D. Benson;D. Reeves