Stochastic deep collocation method based on neural architecture search and transfer learning for heterogeneous porous media

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Guo, H.; Zhuang, X.; Chen, P.; Alajlan, N.; Rabczuk, T.: Stochastic deep collocation method based on neural architecture search and transfer learning for heterogeneous porous media. In: Engineering with computers : an international journal for simulation-based engineering 38 (2022), S. 5173–5198. DOI: https://doi.org/10.1007/s00366-021-01586-2

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Sum total of downloads: 54




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Abstract: 
We present a stochastic deep collocation method (DCM) based on neural architecture search (NAS) and transfer learning for heterogeneous porous media. We first carry out a sensitivity analysis to determine the key hyper-parameters of the network to reduce the search space and subsequently employ hyper-parameter optimization to finally obtain the parameter values. The presented NAS based DCM also saves the weights and biases of the most favorable architectures, which is then used in the fine-tuning process. We also employ transfer learning techniques to drastically reduce the computational cost. The presented DCM is then applied to the stochastic analysis of heterogeneous porous material. Therefore, a three dimensional stochastic flow model is built providing a benchmark to the simulation of groundwater flow in highly heterogeneous aquifers. The performance of the presented NAS based DCM is verified in different dimensions using the method of manufactured solutions. We show that it significantly outperforms finite difference methods in both accuracy and computational cost. © 2022, The Author(s).
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2022
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
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1 image of flag of Germany Germany 24 44.44%
2 image of flag of United States United States 14 25.93%
3 image of flag of China China 11 20.37%
4 image of flag of No geo information available No geo information available 1 1.85%
5 image of flag of Taiwan Taiwan 1 1.85%
6 image of flag of France France 1 1.85%
7 image of flag of Europe Europe 1 1.85%
8 image of flag of Canada Canada 1 1.85%

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