A primary challenge of physics-informed machine learning (PIML) is its generalization beyond the training domain, especially when dealing with complex physical problems represented by partial differential equations (PDEs). This paper aims to enhance the generalization capabilities of PIML, facilitating practical, real-world applications where accurate predictions in unexplored regions are crucial. We leverage the inherent causality and temporal sequential characteristics of PDE solutions to fuse PIML models with recurrent neural architectures based on systems of ordinary differential equations, referred to as neural oscillators. Through effectively capturing long-time dependencies and mitigating the exploding and vanishing gradient problem, neural oscillators foster improved generalization in PIML tasks. Extensive experimentation involving time-dependent nonlinear PDEs and biharmonic beam equations demonstrates the efficacy of the proposed approach. Incorporating neural oscillators outperforms existing state-of-the-art methods on benchmark problems across various metrics. Consequently, the proposed method improves the generalization capabilities of PIML, providing accurate solutions for extrapolation and prediction beyond the training data.

该研究提出了一种新方法，通过融合系统常微分方程所基于的神经振荡器，有效地捕捉长期依赖关系并解决爆炸梯度问题，从而增强了物理先验机器学习模型在复杂物理问题中的泛化能力。通过在时间依赖的非线性偏微分方程和双调和梁方程中进行实验，证明了该方法在基准问题上的优越性能，显著提高了物理先验机器学习的泛化能力，为训练数据之外的外推和预测提供了准确的解决方案。

神经振荡器用于物理推断机器学习的泛化