Search Results for author: Chinchun Ooi

Found 5 papers, 0 papers with code

LSA-PINN: Linear Boundary Connectivity Loss for Solving PDEs on Complex Geometry

no code implementations3 Feb 2023 Jian Cheng Wong, Pao-Hsiung Chiu, Chinchun Ooi, My Ha Dao, Yew-Soon Ong

On the other hand, if the samples are too sparse, existing PINNs tend to overfit the near boundary region, leading to incorrect solution.

Neuroevolution of Physics-Informed Neural Nets: Benchmark Problems and Comparative Results

no code implementations15 Dec 2022 Nicholas Sung Wei Yong, Jian Cheng Wong, Pao-Hsiung Chiu, Abhishek Gupta, Chinchun Ooi, Yew-Soon Ong

Hence, neuroevolution algorithms, with their superior global search capacity, may be a better choice for PINNs relative to gradient descent methods.

Evolutionary Algorithms

CAN-PINN: A Fast Physics-Informed Neural Network Based on Coupled-Automatic-Numerical Differentiation Method

no code implementations29 Oct 2021 Pao-Hsiung Chiu, Jian Cheng Wong, Chinchun Ooi, My Ha Dao, Yew-Soon Ong

In this study, novel physics-informed neural network (PINN) methods for coupling neighboring support points and their derivative terms which are obtained by automatic differentiation (AD), are proposed to allow efficient training with improved accuracy.

Learning in Sinusoidal Spaces with Physics-Informed Neural Networks

no code implementations20 Sep 2021 Jian Cheng Wong, Chinchun Ooi, Abhishek Gupta, Yew-Soon Ong

In this paper, we present a novel perspective of the merits of learning in sinusoidal spaces with PINNs.

Improved Surrogate Modeling of Fluid Dynamics with Physics-Informed Neural Networks

no code implementations5 May 2021 Jian Cheng Wong, Chinchun Ooi, Pao-Hsiung Chiu, My Ha Dao

In addition, we propose a novel transfer optimization scheme for use in such surrogate modeling scenarios and demonstrate an approximately 3x improvement in speed to convergence and an order of magnitude improvement in predictive performance over conventional Xavier initialization for training of new scenarios.

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