arXiv Machine Learning By Ayse Tursucular, Ayush Mohanty, Nazal Mohamed, Nagi Gebraeel

Federated Learning of Nonlinear Temporal Dynamics with Graph Attention-based Cross-Client Interpretability

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The paper introduces a vertical federated learning framework that learns one‑step‑ahead cross‑client temporal interdependencies in decentralized industrial systems with heterogeneous, proprietary models. Each client compresses high‑dimensional sensor data into low‑dimensional latent states via a nonlinear state‑space model, while a central Graph Attention Network (GAT) learns a state‑transition model and derives attention coefficients that reflect cross‑client interactions. The authors analytically link these attention coefficients to the Jacobian of the transition model, proving bounded closeness to a centralized oracle, and validate the approach with synthetic and real‑world experiments showing improved federated root‑cause analysis.

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