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Guangchen Lan

3 accepted papers

2025

Asynchronous Federated Reinforcement Learning with Policy Gradient Updates: Algorithm Design and Convergence Analysis

ICLR 2025poster

To improve the efficiency of reinforcement learning (RL), we propose a novel asynchronous federated reinforcement learning (FedRL) framework termed AFedPG, which constructs a global model through collaboration among $N$ agents using policy gradient (PG) updates. To address the challenge of lagged po…

Cited by 19Source ↗PDF ↗Scholar ↗
2025

Contextual Integrity in LLMs via Reasoning and Reinforcement Learning

NeurIPS 2025poster

As the era of autonomous agents making decisions on behalf of users unfolds, ensuring contextual integrity (CI) -- what is the appropriate information to share while carrying out a certain task -- becomes a central question to the field. We posit that CI demands a form of reasoning where the agent…

Cited by 0Source ↗Scholar ↗
2023

Improved Communication Efficiency in Federated Natural Policy Gradient via ADMM-based Gradient Updates

NeurIPS 2023poster

Federated reinforcement learning (FedRL) enables agents to collaboratively train a global policy without sharing their individual data. However, high communication overhead remains a critical bottleneck, particularly for natural policy gradient (NPG) methods, which are second-order. To address this…

Cited by 33Source ↗PDF ↗Scholar ↗