Search Results for author: Jingrun Chen

Found 5 papers, 1 papers with code

Solving multiscale elliptic problems by sparse radial basis function neural networks

no code implementations1 Sep 2023 Zhiwen Wang, Minxin Chen, Jingrun Chen

Thus the loss function contains two parts: the $L_2$ loss for the residual of the first-order system and boundary conditions, and the $\ell_1$ regularization term for the weights of radial basis functions (RBFs).

A Gauss-Seidel projection method with the minimal number of updates for stray field in micromagnetic simulations

no code implementations21 Jan 2021 Panchi Li, Zetao Ma, Rui Du, Jingrun Chen

However, GSPM-BDF2 updates the stray field only once per time step, leading to an efficiency improvement of about $60\%$ than the state-of-the-art GSPM for micromagnetic simulations.

Numerical Analysis Numerical Analysis

Enforcing exact boundary and initial conditions in the deep mixed residual method

1 code implementation4 Aug 2020 Liyao Lyu, Keke Wu, Rui Du, Jingrun Chen

In theory, boundary and initial conditions are important for the wellposedness of partial differential equations (PDEs).

Numerical Analysis Numerical Analysis

Quasi-Monte Carlo sampling for machine-learning partial differential equations

no code implementations5 Nov 2019 Jingrun Chen, Rui Du, Panchi Li, Liyao Lyu

Often, a deep neural network outperforms classical numerical methods in terms of both accuracy and efficiency.

BIG-bench Machine Learning Numerical Integration

A QMC-deep learning method for diffusivity estimation in random domains

no code implementations31 Oct 2019 Liyao Lyu, Zhiwen Zhang, Jingrun Chen

Exciton diffusion plays a vital role in the function of many organic semiconducting opto-electronic devices, where an accurate description requires precise control of heterojunctions.

Experimental Design

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