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arXiv 2602.06996cs.NEcs.LGcs.SYeess.SY
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基于课程学习的消失堆叠残差PINN用于超几何PDE状态重建

Curriculum-Learned Vanishing Stacked Residual PINNs for Hyperbolic PDE State Reconstruction

Digital Futures and KTH Royal Institute of Technology(数字未来与皇家理工学院)

Katayoun Eshkofti, Matthieu Barreau

AI总结:

本文提出基于课程学习的消失堆叠残差PINN,通过整合PD优化、因果性进展和自适应采样方法,有效提升双曲PDE状态重建的精度与稳定性。

摘要:

建模由双曲偏微分方程(PDE)支配的分布式动力系统仍然具有挑战性,因为不连续性和激波会阻碍传统物理信息神经网络(PINN)的收敛。最近提出的消失堆叠残差PINN(VSR-PINN)在堆叠残差细化中嵌入了消失粘性机制,以实现从抛物到双曲 regime 的平滑过渡。本文将三种课程学习方法作为对偶(PD)优化、因果性进展和自适应采样整合到VSR-PINN中。PD策略平衡物理和数据损失,因果性方案通过尊重时间和梯度演进而解锁更深的堆叠,自适应采样针对高残差。在交通重建的数值实验中,强制因果性系统地减少了中位点均方误差及其在不同运行中的变异性,相对于非因果训练,在基线和PD变体中均实现了近一个数量级的改进。

英文摘要:

Modeling distributed dynamical systems governed by hyperbolic partial differential equations (PDEs) remains challenging due to discontinuities and shocks that hinder the convergence of traditional physics-informed neural networks (PINNs). The recently proposed vanishing stacked residual PINN (VSR-PINN) embeds a vanishing-viscosity mechanism within stacked residual refinements to enable a smooth transition from the parabolic to hyperbolic regime. This paper integrates three curriculum-learning methods as primal-dual (PD) optimization, causality progression, and adaptive sampling into the VSR-PINN. The PD strategy balances physics and data losses, the causality scheme unlocks deeper stacks by respecting temporal and gradient evolution, and adaptive sampling targets high residuals. Numerical experiments on traffic reconstruction confirm that enforcing causality systematically reduces the median point-wise MSE and its variability across runs, yielding improvements of nearly one order of magnitude over non-causal training in both the baseline and PD variants.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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