arXiv:2504.01532nlin.CDcs.LG2025-04被引 3

将系统耦合结构融入网络设计,提升对复杂混沌系统的学习效率与鲁棒性。

Incorporating Coupling Knowledge into Echo State Networks for Learning Spatiotemporally Chaotic Dynamics

  • 在回声状态网络中引入物理引导的分簇结构,利用耦合知识作为先验信息。
  • 在基准混沌系统上,模型性能优于传统ESN,且训练数据需求更少。
  • 即使耦合知识不完美,模型仍保持有效,适合真实场景中的复杂系统建模。

机器学习在学习混沌动力系统方面展现出潜力,可实现无需模型的短期预测和吸引子重构。然而,当应用于大规模时空混沌系统时,纯数据驱动的方法往往效率低下,需要庞大的模型规模和海量训练数据才能达到可接受性能。为解决此问题,本文将目标系统的空间耦合结构作为归纳偏置引入网络设计。具体而言,提出物理引导的分簇回声状态网络,以回声状态网络为基础模型,利用其高效性。在基准混沌系统上的实验表明,该物理信息方法在学习目标混沌系统方面优于现有回声状态网络模型。此外,数值结果证明,将耦合知识融入ESN模型可增强其对训练与目标系统条件变化的鲁棒性。进一步显示,即使耦合知识不精确或直接从时间序列数据中提取,所提模型仍具有效性。我们认为该方法有潜力推广至其他机器学习框架。

原文摘要 · Abstract (English)

Machine learning methods have shown promise in learning chaotic dynamical systems, enabling model-free short-term prediction and attractor reconstruction. However, when applied to large-scale, spatiotemporally chaotic systems, purely data-driven machine learning methods often suffer from inefficiencies, as they require a large learning model size and a massive amount of training data to achieve acceptable performance. To address this challenge, we incorporate the spatial coupling structure of the target system as an inductive bias in the network design. Specifically, we introduce physics-guided clustered echo state networks, leveraging the efficiency of the echo state networks as a base model. Experimental results on benchmark chaotic systems demonstrate that our physics-informed method outperforms existing echo state network models in learning the target chaotic systems. Additionally, we numerically demonstrate that leveraging coupling knowledge into ESN models can enhance their robustness to variations of training and target system conditions. We further show that our proposed model remains effective even when the coupling knowledge is imperfect or extracted directly from time series data. We believe this approach has the potential to enhance other machine-learning methods.

混沌系统回声网络物理信息时空建模

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