arXiv Machine Learning By Simon Heilig, Jens P\"uttschneider, Mohammad Itani, Asja Fischer, Timm Faulwasser

Port-Hamiltonian Neural Networks for Systems with Multiple Asymptotically Stable Equilibria

Read the original on arXiv Machine Learning →

The paper introduces a new class of port‑Hamiltonian neural networks that can model systems with multiple asymptotically stable equilibria. By parameterizing the Hamiltonian as a product of Bregman divergences generated by an input‑convex network, the authors overcome the limitation of previous models that could only represent a single attractor. They prove local Lyapunov stability, show that additional non‑asymptotically stable equilibria must exist, and demonstrate improved convergence on three benchmark systems.

Machine-generated by The Flow from the publisher's headline and feed description — not written or checked by a human. The full article lives at arXiv Machine Learning.

arXiv Machine Learning
Aug 19

Nonlinear GENERIC-Embedded Neural Networks (N-GENNs): Learning GENERIC dynamics with non-quadratic dissipation potentials

Nonlinear GENERIC-Embedded Neural Networks (N-GENNs) are a deep learning framework designed to discover evolution equations for systems governed by the nonlinear GENERIC formalism. The method incorporates generalized gradient flows through convex dissipation potentials, allowing it to capture a wider range of thermodynamically consistent dynamics, including those with non‑quadratic dissipation potentials. Thermodynamic structure is enforced by construction, ensuring compliance with the first and second laws, and the approach is validated on a harmonic oscillator with a heat bath, an idealized chemical motor, and a one‑dimensional viscoplastic Perzyna model.

By Vojt\v{e}ch Votruba, Zequn He, Weilun Qiu, Celia Reina, Michal Pavelka
arXiv Machine Learning
Sep 17

Learning Lyapunov Operators for Nonlinear Systems

The paper investigates the Lyapunov solution operator, which maps a vector field to its corresponding Lyapunov function via a dissipation-based PDE. It proves that this operator is well-defined, unique, and continuous on compact subsets of the domain of attraction under exponential stability, enabling uniform approximation across families of nonlinear systems. Using Fourier Neural Operators, the authors demonstrate that a single trained operator can accurately approximate Lyapunov functions for parameterized dynamics, showcasing the potential of neural operators in stability analysis.

By Amartya Mukherjee, Maxwell Fitzsimmons, David C. Del Rey Fern\'andez, Jun Liu