arXiv Machine Learning

Uncertainty Quantification in Federated Granger Causality Learning

The paper studies uncertainty quantification in federated Granger causality learning, where multiple parties cannot share data but need to infer predictive dependencies across clients. It addresses the challenge that clients observe different features and that cross-client edges must be estimated indirectly through iterative client‑server communication, which propagates both aleatoric and epistemic uncertainty. By deriving closed‑form variance recursions and steady‑state variances, the authors show that initial model‑parameter uncertainty diminishes asymptotically, enabling statistically principled selection of genuine cross‑client dependencies and improving edge recovery in synthetic and real industrial datasets.

arXiv Machine Learning
Oct 19

Causal Discovery beyond Conditional Independence: Identifiability, Algorithms, and Statistical Inference for Directed Acyclic and Cyclic Graphs

The paper reviews modern causal discovery techniques that go beyond conditional independence, highlighting how distributional properties, such as asymmetries, conditional moments, and environmental variation, can identify causal structure. It distinguishes between identification sources, statistical estimators, and computational implementations, and discusses challenges in the presence of latent confounding, feedback, and cyclic models. The authors also outline consistency, uncertainty quantification, and algorithmic guarantees, and provide guidance for comparing methods and a research agenda for future work.

By Yang Ni
arXiv Machine Learning
Oct 12

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

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.

By Ayse Tursucular, Ayush Mohanty, Nazal Mohamed, Nagi Gebraeel
arXiv AI
Jun 24

A Survey on Federated Causal Discovery and Inference

arXiv:2606. 23741v1 Announce Type: cross Abstract: Causal reasoning, which encompasses the discovery of causal structures and the inference of causal effects, is fundamental to data-driven decision making.

By Xianjie Guo, Yuwei Wang, Guodu Xiang, Xiaoli Tang, Kui Yu, Han Yu, Qiang Yang
arXiv Machine Learning
Jul 14

FedCausal-Dyn: A Causal-Dynamic Paradigm for Federated Learning under Dynamic Feature Drift

arXiv:2607. 09695v1 Announce Type: new Abstract: This paper addresses the challenging problem of dynamic feature drift in federated learning, where data distributions evolve across clients and over time -- a common scenario in real-world applications like financial technology.

By Kaijie Chen, Alex Johnson, Maria Garcia, Wei Zhang, Daniel Kim
arXiv AI
Sep 7

Beyond Stationarity in Time Series: Discovering Causal Structures and Latent Regimes via Markov Blankets

The paper presents RCBNB-MB, a causal discovery algorithm that relaxes the assumption of a single, time‑consistent causal structure in time series. It identifies latent causal regimes—subsets of time points where a stable causal graph holds—and iteratively segments the series to recover both regime transitions and the corresponding causal graphs using Markov blankets. The authors provide theoretical guarantees and demonstrate through simulations and real IT monitoring data that RCBNB-MB outperforms baseline methods in detecting regime changes and their causal structures.

By Lei Zan, Charles K. Assaad, Emilie Devijver, Eric Gaussier