数学科学研究所
Insitute of Mathematical Science

Applied Mathematics Seminar 19:  Domain Decomposition Learning Methods

Seminar| Institute of Mathematical Sciences
Time:Monday, March 6th , 2023, 16:00-17:00
Location:RS408, IMS
Speaker: Xuejun Xu, School of Mathematical Sciences, Tongji University and Institute of Computational Mathematics, AMSS,CAS, Beijing

AbstractWith the aid of hardware and software developments, there has been a surge of interests in solving partial differential equations by deep learning techniques, and the integration with domain decomposition strategies has recently attracted considerable attention due to its enhanced representation and parallelization capacity of the network solution. In this talk, a novel learning approach, i.e., the compensated deep Ritz method, is proposed to enable the flux transmission across subregion interfaces with guaranteed accuracy, thereby allowing us to construct effective learning algorithms for realizing the more general non-overlapping domain decomposition methods in the presence of overfitted interface conditions. Numerical experiments on a series of elliptic boundary value problems including the regular and irregular interfaces, low and high dimensions, smooth and high-contrast coefficients on multidomains are carried out to validate the effectiveness of our proposed domain decomposition learning algorithms.


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