arXiv:2601.21080math.NAcs.LG2026-01被引 1

新方法让数据驱动模型自动满足守恒、熵稳定与双曲性。

Parametric Hyperbolic Conservation Laws: A Unified Framework for Conservation, Entropy Stability, and Hyperbolicity

  • 参数化通量函数,保证雅可比矩阵实特征值和完整特征向量。
  • 联合学习凸熵函数与通量势能,实现熵耗散与物理解选择。
  • 适用于含噪数据和长时预测,适合构建可信的物理建模系统。

我们提出一种参数化双曲守恒律(SymCLaw),可直接从数据中学习双曲系统,同时在设计上保证守恒性、熵稳定性和双曲性。与以往仅强制守恒或依赖先验方程的方法不同,该方法将通量函数参数化为确保通量雅可比矩阵具有实特征值和完整特征向量的形式,从而维持双曲性。同时,通过联合学习凸熵函数及其对应的通量势能,嵌入熵稳定设计原则,确保熵耗散并选择物理可接受的弱解。配套的熵稳定数值通量方案与经典离散化兼容,可无缝集成至传统求解器。在Burgers、浅水波、Euler及KPP方程等基准问题上的实验表明,SymCLaw能泛化到未见初值,在含噪训练数据下保持稳定,并实现高精度长时预测,展现出作为数据驱动双曲守恒律建模的原理性基础潜力。

原文摘要 · Abstract (English)

We propose a parametric hyperbolic conservation law (SymCLaw) for learning hyperbolic systems directly from data while ensuring conservation, entropy stability, and hyperbolicity by design. Unlike existing approaches that typically enforce only conservation or rely on prior knowledge of the governing equations, our method parameterizes the flux functions in a form that guarantees real eigenvalues and complete eigenvectors of the flux Jacobian, thereby preserving hyperbolicity. At the same time, we embed entropy-stable design principles by jointly learning a convex entropy function and its associated flux potential, ensuring entropy dissipation and the selection of physically admissible weak solutions. A corresponding entropy-stable numerical flux scheme provides compatibility with standard discretizations, allowing seamless integration into classical solvers. Numerical experiments on benchmark problems, including Burgers, shallow water, Euler, and KPP equations, demonstrate that SymCLaw generalizes to unseen initial conditions, maintains stability under noisy training data, and achieves accurate long-time predictions, highlighting its potential as a principled foundation for data-driven modeling of hyperbolic conservation laws.

双曲系统数据驱动熵稳定守恒律

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