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An inverse reinforcement learning (IRL) agent learns to act intelligently by observing expert demonstrations and learning the expert's underlying reward function. Although learning the reward functions from demonstrations has achieved great…

Artificial Intelligence · Computer Science 2022-02-28 Wei Gao , David Hsu , Wee Sun Lee

Inverse reinforcement learning (IRL) is computationally challenging, with common approaches requiring the solution of multiple reinforcement learning (RL) sub-problems. This work motivates the use of potential-based reward shaping to reduce…

Machine Learning · Computer Science 2023-12-19 Lauren H. Cooke , Harvey Klyne , Edwin Zhang , Cassidy Laidlaw , Milind Tambe , Finale Doshi-Velez

The gloabal objective of inverse Reinforcement Learning (IRL) is to estimate the unknown cost function of some MDP base on observed trajectories generated by (approximate) optimal policies. The classical approach consists in tuning this…

Machine Learning · Computer Science 2021-05-26 Firas Jarboui , Vianney Perchet

In recent years, end-to-end autonomous driving architectures have gained increasing attention due to their advantage in avoiding error accumulation. Most existing end-to-end autonomous driving methods are based on Imitation Learning (IL),…

Artificial Intelligence · Computer Science 2025-04-22 Yueyuan Li , Mingyang Jiang , Songan Zhang , Wei Yuan , Chunxiang Wang , Ming Yang

In this paper, we introduce the first learning-based planner to drive a car in dense, urban traffic using Inverse Reinforcement Learning (IRL). Our planner, DriveIRL, generates a diverse set of trajectory proposals, filters these…

Vision-Language-Action (VLA) models have demonstrated potential in autonomous driving. However, two critical challenges hinder their development: (1) Existing VLA architectures are typically based on imitation learning in open-loop setup…

Artificial Intelligence · Computer Science 2025-08-18 Anqing Jiang , Yu Gao , Yiru Wang , Zhigang Sun , Shuo Wang , Yuwen Heng , Hao Sun , Shichen Tang , Lijuan Zhu , Jinhao Chai , Jijun Wang , Zichong Gu , Hao Jiang , Li Sun

Inverse reinforcement learning (IRL) is a powerful paradigm for uncovering the incentive structure that drives agent behavior, by inferring an unknown reward function from observed trajectories within a Markov decision process (MDP).…

Reinforcement learning (RL) in autonomous driving employs a trial-and-error mechanism, enhancing robustness in unpredictable environments. However, crafting effective reward functions remains challenging, as conventional approaches rely…

Machine Learning · Computer Science 2025-06-02 Yongming Chen , Miner Chen , Liewen Liao , Mingyang Jiang , Xiang Zuo , Hengrui Zhang , Yuchen Xi , Songan Zhang

Reinforcement learning (RL) faces challenges in trajectory planning for urban automated driving due to the poor convergence of RL and the difficulty in designing reward functions. Consequently, few RL-based trajectory planning methods can…

Robotics · Computer Science 2025-07-17 Di Zeng , Ling Zheng , Xiantong Yang , Yinong Li

Inverse Reinforcement Learning (IRL) is a powerful set of techniques for imitation learning that aims to learn a reward function that rationalizes expert demonstrations. Unfortunately, traditional IRL methods suffer from a computational…

Machine Learning · Computer Science 2024-01-31 Gokul Swamy , Sanjiban Choudhury , J. Andrew Bagnell , Zhiwei Steven Wu

Mobility trajectories are essential for understanding urban dynamics and enhancing urban planning, yet access to such data is frequently hindered by privacy concerns. This research introduces a transformative framework for generating…

Multi-agent learning is a promising method to simulate aggregate competitive behaviour in finance. Learning expert agents' reward functions through their external demonstrations is hence particularly relevant for subsequent design of…

Machine Learning · Computer Science 2019-06-13 Jacobo Roa-Vicens , Cyrine Chtourou , Angelos Filos , Francisco Rullan , Yarin Gal , Ricardo Silva

The recent mean field game (MFG) formalism has enabled the application of inverse reinforcement learning (IRL) methods in large-scale multi-agent systems, with the goal of inferring reward signals that can explain demonstrated behaviours of…

Machine Learning · Computer Science 2022-02-15 Yang Chen , Libo Zhang , Jiamou Liu , Shuyue Hu

Reinforcement learning in complex environments is a challenging problem. In particular, the success of reinforcement learning algorithms depends on a well-designed reward function. Inverse reinforcement learning (IRL) solves the problem of…

Machine Learning · Computer Science 2021-01-20 Rakhoon Hwang , Hanjin Lee , Hyung Ju Hwang

Inverse Reinforcement Learning (IRL) techniques deal with the problem of deducing a reward function that explains the behavior of an expert agent who is assumed to act optimally in an underlying unknown task. In several problems of…

Machine Learning · Computer Science 2024-01-09 Riccardo Poiani , Gabriele Curti , Alberto Maria Metelli , Marcello Restelli

In this work, we propose a novel inverse reinforcement learning (IRL) algorithm for constrained Markov decision process (CMDP) problems. In standard IRL problems, the inverse learner or agent seeks to recover the reward function of the MDP,…

Machine Learning · Computer Science 2024-01-08 Nirjhar Das , Arpan Chattopadhyay

Imitation learning (IL) is a framework that learns to imitate expert behavior from demonstrations. Recently, IL shows promising results on high dimensional and control tasks. However, IL typically suffers from sample inefficiency in terms…

Machine Learning · Computer Science 2021-11-24 Lihua Zhang

Being able to predict human gaze behavior has obvious importance for behavioral vision and for computer vision applications. Most models have mainly focused on predicting free-viewing behavior using saliency maps, but these predictions do…

Computer Vision and Pattern Recognition · Computer Science 2020-06-26 Zhibo Yang , Lihan Huang , Yupei Chen , Zijun Wei , Seoyoung Ahn , Gregory Zelinsky , Dimitris Samaras , Minh Hoai

Alignment is vital for safely deploying large language models (LLMs). Existing techniques are either reward-based (training a reward model on preference pairs and optimizing with reinforcement learning) or reward-free (directly fine-tuning…

Computation and Language · Computer Science 2026-03-03 Ruoxi Cheng , Haoxuan Ma , Weixin Wang , Ranjie Duan , Jiexi Liu , Xiaoshuang Jia , Simeng Qin , Xiaochun Cao , Yang Liu , Xiaojun Jia

Scaling adaptive traffic-signal control involves dealing with combinatorial state and action spaces. Multi-agent reinforcement learning attempts to address this challenge by distributing control to specialized agents. However,…

Machine Learning · Computer Science 2021-09-22 François-Xavier Devailly , Denis Larocque , Laurent Charlin