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Xuan Di

6 accepted papers

2025

Stochastic Semi-Gradient Descent for Learning Mean Field Games with Population-Aware Function Approximation

ICLR 2025poster

Mean field games (MFGs) model interactions in large-population multi-agent systems through population distributions. Traditional learning methods for MFGs are based on fixed-point iteration (FPI), where policy updates and induced population distributions are computed separately and sequentially. How…

Cited by 1SourcePDFScholar
2024

Causal Imitation for Markov Decision Processes: a Partial Identification Approach

NeurIPS 2024poster

Imitation learning enables an agent to learn from expert demonstrations when the performance measure is unknown and the reward signal is not specified. Standard imitation methods do not generally apply when the learner and the expert's sensory capabilities mismatch and demonstrations are contaminate…

Cited by 7SourcePDFScholar
2024

Graphon Mean Field Games with a Representative Player: Analysis and Learning Algorithm

ICML 2024poster

We propose a discrete time graphon game formulation on continuous state and action spaces using a representative player to study stochastic games with heterogeneous interaction among agents. This formulation admits both conceptual and mathematical advantages, compared to a widely adopted formulation…

Cited by 4SourcePDFScholar
2023

Causal Imitation Learning via Inverse Reinforcement Learning

ICLR 2023poster

One of the most common ways children learn when unfamiliar with the environment is by mimicking adults. Imitation learning concerns an imitator learning to behave in an unknown environment from an expert's demonstration; reward signals remain latent to the imitator. This paper studies imitation lear…

Cited by 43SourcePDFScholar
2021

Physics-Informed Deep Learning for Traffic State Estimation: A Hybrid Paradigm Informed By Second-Order Traffic Models

AAAI 2021technical

Traffic state estimation (TSE) reconstructs the traffic variables (e.g., density or average velocity) on road segments using partially observed data, which is important for traffic managements. Traditional TSE approaches mainly bifurcate into two categories: model-driven and data-driven, and each of…

Cited by 116SourcePDFScholar