Advancements in Physics-Informed Neural Networks for Solving Partial Differential Equations

The field of physics-informed neural networks (PINNs) is rapidly advancing, with a focus on improving the accuracy and stability of these models for solving partial differential equations (PDEs). Recent developments have centered on addressing the challenges of loss weight selection, model complexity, and the incorporation of external solvers. Notably, researchers are exploring innovative methods to balance loss function components during training, such as adaptive loss weighting mechanisms. Additionally, there is a growing interest in combining PINNs with other numerical methods, like isogeometric analysis and algebraic multigrid methods, to tackle complex engineering problems. These advancements have the potential to significantly improve the precision and robustness of PINNs in solving PDEs. Some noteworthy papers in this area include: The paper on Impact of Loss Weight and Model Complexity on Physics-Informed Neural Networks for Computational Fluid Dynamics, which proposes a two-dimensional analysis-based weighting scheme to improve stability and accuracy. The paper on Gated X-TFC, which introduces a novel framework for soft domain decomposition, achieving superior accuracy and computational efficiency for sharp-gradient PDEs.

Sources

Impact of Loss Weight and Model Complexity on Physics-Informed Neural Networks for Computational Fluid Dynamics

Coupling Physics Informed Neural Networks with External Solvers

AW-EL-PINNs: A Multi-Task Learning Physics-Informed Neural Network for Euler-Lagrange Systems in Optimal Control Problems

Multi-patch isogeometric neural solver for partial differential equations on computer-aided design domains

HANN: Homotopy auxiliary neural network for solving nonlinear algebraic equations

Numerical analysis of 2D Navier--Stokes equations with nonsmooth initial value in the critical space

Gated X-TFC: Soft Domain Decomposition for Forward and Inverse Problems in Sharp-Gradient PDEs

Deep Learning Accelerated Algebraic Multigrid Methods for Polytopal Discretizations of Second-Order Differential Problems

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