2 papers
cs.LG2026
Distributionally Robust Federated Learning with Multi-Source Data
Yingzhu Liu, Zhongkui Li, Pengcheng You +1
Federated learning trains a shared model from private client data. In practice, data-generating distributions may differ, and the true mixture across clients is often unknown, maki…
math.OC2025
Discovering Mechanistic Causality from Time Series: A Behavioral-System Approach
Yingzhu Liu, Shengyuan Huang, Zhongkui Li +2
Identifying ``true causality'' is a fundamental challenge in complex systems research. Widely adopted methods, like the Granger causality test, capture statistical dependencies bet…