A multi-stage deep learning based algorithm for multiscale modelreduction
A multi-stage deep learning based algorithm for multiscale modelreduction
复制标题
一种基于多阶段深度学习的多尺度模型缩减算法
DOI:
10.1016/j.cam.2021.113506
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Zecheng Zhang
中科院分区:
文献类型:
--
作者:
Eric T. Chung;W. Leung;Sai;Zecheng Zhang
In this work, we propose a multi-stage training strategy for the development of deep learning algorithms applied to problems with multiscale features. Each stage of the proposed strategy shares an (almost) identical network structure and predicts the same reduced order model of the multiscale problem. The output of the previous stage will be combined with an intermediate layer for the current stage. We numerically show that using different reduced order models as inputs of each stage can improve the training and we propose several ways of adding different information into the systems. These methods include mathematical multiscale model reductions and network approaches; but we found that the mathematical approach is a systematical way of decoupling information and gives the best result. We finally verified our training methodology on a time dependent nonlinear problem and a steady state model.
DOI:
10.3390/math8050720
发表时间:
2020-04
期刊:
ArXiv
影响因子:
--
作者:
Zecheng Zhang;Eric T. Chung;Y. Efendiev;W. Leung
通讯作者:
Zecheng Zhang;Eric T. Chung;Y. Efendiev;W. Leung
影响因子:
4.1
作者:
Vasilyeva, Maria;Leung, Wing T.;Chung, Eric T.;Efendiev, Yalchin;Wheeler, Mary
通讯作者:
Wheeler, Mary