1 code implementation • 13 Aug 2023 • Ming-Chih Lai, Yongcun Song, Xiaoming Yuan, Hangrui Yue, Tianyou Zeng
We show that the physics-informed neural networks (PINNs), in combination with some recently developed discontinuity capturing neural networks, can be applied to solve optimal control problems subject to partial differential equations (PDEs) with interfaces and some control constraints.
1 code implementation • 16 Oct 2022 • Yu-Hau Tseng, Te-Sheng Lin, Wei-Fan Hu, Ming-Chih Lai
In this paper, we propose a cusp-capturing physics-informed neural network (PINN) to solve discontinuous-coefficient elliptic interface problems whose solution is continuous but has discontinuous first derivatives on the interface.
no code implementations • 11 Oct 2022 • Wei-Fan Hu, Te-Sheng Lin, Yu-Hau Tseng, Ming-Chih Lai
A new and efficient neural-network and finite-difference hybrid method is developed for solving Poisson equation in a regular domain with jump discontinuities on embedded irregular interfaces.
no code implementations • 3 Mar 2022 • Wei-Fan Hu, Yi-Jun Shih, Te-Sheng Lin, Ming-Chih Lai
To track the surface, we additionally introduce a prescribed hidden layer to enforce the topological structure of the surface and use the network to learn the homeomorphism between the surface and the prescribed topology.
no code implementations • 26 Jul 2021 • Ming-Chih Lai, Che-Chia Chang, Wei-Syuan Lin, Wei-Fan Hu, Te-Sheng Lin
We first introduce the energy functional of the problem and then transform the contribution of singular sources to a regular surface integral along the interface.
1 code implementation • 10 Jun 2021 • Wei-Fan Hu, Te-Sheng Lin, Ming-Chih Lai
In this paper, a new Discontinuity Capturing Shallow Neural Network (DCSNN) for approximating $d$-dimensional piecewise continuous functions and for solving elliptic interface problems is developed.