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Huizhong Song

3 accepted papers

2025

Risk-aware Direct Preference Optimization under Nested Risk Measure

NeurIPS 2025poster

When fine-tuning pre-trained Large Language Models (LLMs) to align with human values and intentions, maximizing the estimated reward can lead to superior performance, but it also introduces potential risks due to deviations from the reference model's intended behavior. Most existing methods typicall…

Cited by 0SourcecodeScholar
2024

Scalable Constrained Policy Optimization for Safe Multi-agent Reinforcement Learning

NeurIPS 2024poster

A challenging problem in seeking to bring multi-agent reinforcement learning (MARL) techniques into real-world applications, such as autonomous driving and drone swarms, is how to control multiple agents safely and cooperatively to accomplish tasks. Most existing safe MARL methods learn the centrali…

Cited by 1SourcePDFScholar
2023

Set-membership Belief State-based Reinforcement Learning for POMDPs

ICML 2023poster

Reinforcement learning (RL) has made significant progress in areas such as Atari games and robotic control, where the agents have perfect sensing capabilities. However, in many real-world sequential decision-making tasks, the observation data could be noisy or incomplete due to the intrinsic low qua…

Cited by 0SourcePDFScholar