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20242026
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cs.LG2026

Beyond Fixed Rounds: Data-Free Early Stopping for Practical Federated Learning

Youngjoon Lee, Hyukjoon Lee, Seungrok Jung +4

Federated Learning (FL) facilitates decentralized collaborative learning without transmitting raw data. However, reliance on fixed global rounds or validation data for hyperparamet…

cs.LG2025

When to Stop Federated Learning: Zero-Shot Generation of Synthetic Validation Data with Generative AI for Early Stopping

Youngjoon Lee, Hyukjoon Lee, Jinu Gong +2

Federated Learning (FL) enables collaborative model training across decentralized devices while preserving data privacy. However, FL methods typically run for a predefined number o…

cs.LG2025

Adaptive Token-Weighted Differential Privacy for LLMs: Not All Tokens Require Equal Protection

Manjiang Yu, Priyanka Singh, Xue Li +1

Large language models (LLMs) frequently memorize sensitive or personal information, raising significant privacy concerns. Existing variants of differential privacy stochastic gradi…

cs.LG2025

Debunking Optimization Myths in Federated Learning for Medical Image Classification

Youngjoon Lee, Hyukjoon Lee, Jinu Gong +2

Federated Learning (FL) is a collaborative learning method that enables decentralized model training while preserving data privacy. Despite its promise in medical imaging, recent F…

cs.LG2024

Tackling Data Heterogeneity in Federated Time Series Forecasting

Wei Yuan, Guanhua Ye, Xiangyu Zhao +3

Time series forecasting plays a critical role in various real-world applications, including energy consumption prediction, disease transmission monitoring, and weather forecasting.…

cs.LG2024

Noise-Aware Algorithm for Heterogeneous Differentially Private Federated Learning

Saber Malekmohammadi, Yaoliang Yu, Yang Cao

High utility and rigorous data privacy are of the main goals of a federated learning (FL) system, which learns a model from the data distributed among some clients. The latter has…