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Lihe Li

9 accepted papers

2026

Multi-agent In-context Coordination via Decentralized Memory Retrieval

AAAI 2026technical

Large transformer models, trained on diverse datasets, have demonstrated impressive few-shot performance on previously unseen tasks without requiring parameter updates. This capability has also been explored in Reinforcement Learning (RL), where agents interact with the environment to retrieve conte

Cited by 0SourcePDFScholar
2025

Adaptable Safe Policy Learning from Multi-task Data with Constraint Prioritized Decision Transformer

NeurIPS 2025poster

Learning safe reinforcement learning (RL) policies from offline multi-task datasets without direct environmental interaction is crucial for efficient and reliable deployment of RL agents. Benefiting from their scalability and strong in-context learning capabilities, recent approaches attempt to util…

Cited by 0SourceScholar
2025

Efficient Multi-agent Offline Coordination via Diffusion-based Trajectory Stitching

ICLR 2025poster

Learning from offline data without interacting with the environment is a promising way to fully leverage the intelligent decision-making capabilities of multi-agent reinforcement learning (MARL). Previous approaches have primarily focused on developing learning techniques, such as conservative metho…

Cited by 1SourcePDFScholar
2025

LLM-Assisted Semantically Diverse Teammate Generation for Efficient Multi-agent Coordination

ICML 2025poster

Training with diverse teammates is the key for learning generalizable agents. Typical approaches aim to generate diverse teammates by utilizing techniques like randomization, designing regularization terms, or reducing policy compatibility, etc. However, such teammates lack semantic information, res…

2025

Learning to Reuse Policies in State Evolvable Environments

ICML 2025poster

The policy trained via reinforcement learning (RL) makes decisions based on sensor-derived state features. It is common for state features to evolve for reasons such as periodic sensor maintenance or the addition of new sensors for performance improvement. The deployed policy fails in new state spac…

Cited by 0SourcePDFScholar
2024

Continual Multi-Objective Reinforcement Learning via Reward Model Rehearsal

IJCAI 2024poster

Multi-objective reinforcement learning (MORL) approaches address real-world problems with multiple objectives by learning policies maximizing returns weighted by different user preferences. Typical methods assume the objectives remain unchanged throughout the agent's lifetime. However, in some real-…

Cited by 0SourcePDFScholar
2024

Multi-Agent Domain Calibration with a Handful of Offline Data

NeurIPS 2024poster

The shift in dynamics results in significant performance degradation of policies trained in the source domain when deployed in a different target domain, posing a challenge for the practical application of reinforcement learning (RL) in real-world scenarios. Domain transfer methods aim to bridge thi…

Cited by 0SourcePDFScholar
2023

Fast Teammate Adaptation in the Presence of Sudden Policy Change

UAI 2023poster

Cooperative multi-agent reinforcement learning (MARL), where agents coordinates with teammate(s) for a shared goal, may sustain non-stationary caused by the policy change of teammates. Prior works mainly concentrate on the policy change cross episodes, ignoring the fact that teammates may suffer f…

Cited by 13SourcePDFScholar
2023

Robust Multi-Agent Coordination via Evolutionary Generation of Auxiliary Adversarial Attackers

AAAI 2023technical

Cooperative Multi-agent Reinforcement Learning (CMARL) has shown to be promising for many real-world applications. Previous works mainly focus on improving coordination ability via solving MARL-specific challenges (e.g., non-stationarity, credit assignment, scalability), but ignore the policy pertur…