[2606.11251] Mechanical Field Networks: Structured Neural Dynamics for Multivariate Systems
[Submitted on 8 Jun 2026]
Title:Mechanical Field Networks: Structured Neural Dynamics for Multivariate Systems
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Abstract:Many multivariate dynamical systems are observed only through trajectories, leaving the mechanisms governing their joint dynamics hidden. Existing approaches can impose interpretable dynamics or learn flexible state transitions, yet the resulting interaction structure is typically either specified in advance or left implicit within the learned dynamics. We introduce MF-Net, a recurrent dynamical model that represents all variables in a shared field state and updates this state through a learned relation law. Each variable carries a field component, and these components evolve jointly through a learnable mechanical transition. Here, mechanical refers to the relation-to-motion organization of the transition, where learned relations shape state-dependent flows, field responses, and motion tendencies that move the field state forward. The resulting structure is part of the rollout itself: learned relations influence how the field moves, and the same internal quantities support both forecasting and structural readout. Across known-law interaction systems, chaotic benchmarks, real neural recordings, and ecological time series, MF-Net achieves competitive short- and medium-horizon forecasting while retaining inspectable structural readout. On the 40-dimensional Lorenz--96 testbed, MF-Net achieves an eight-step $R^2$ of $0.798\pm0.018$; across five seeds, its learned relation matrix recovers the local coupling support with a local/nonlocal strength ratio of $19.80\pm1.00$ and Precision@$K$ of $1.000\pm0.000$. MF-Net provides a structure-readable dynamical modeling framework in which learned relations are trained through forward evolution and, on real data, interpreted as functional predictive couplings under appropriate observational limits.
Subjects:
Machine Learning (cs.LG)
Cite as: arXiv:2606.11251 [cs.LG]
(or arXiv:2606.11251v1 [cs.LG] for this version)
https://doi.org/10.48550/arXiv.2606.11251
arXiv-issued DOI via DataCite (pending registration)
Submission history
From: Xingji Cui [view email] [v1] Mon, 8 Jun 2026 15:23:16 UTC (904 KB)
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