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Offline reinforcement learning (RL) has achieved significant advances in domains such as robotic control, autonomous driving, and medical decision-making. Most existing methods primarily focus on training policies that maximize cumulative…

Machine Learning · Computer Science 2025-09-30 Yue Pei , Hongming Zhang , Chao Gao , Martin Müller , Mengxiao Zhu , Hao Sheng , Ziliang Chen , Liang Lin , Haogang Zhu

The optimal objective is a fundamental aspect of reinforcement learning (RL), as it determines how policies are evaluated and optimized. While total return maximization is the ideal objective in RL, discounted return maximization is the…

Machine Learning · Computer Science 2025-03-19 Shuyu Yin , Fei Wen , Peilin Liu , Tao Luo

Reinforcement learning (RL) makes an agent learn from trial-and-error experiences gathered during the interaction with the environment. Recently, offline RL has become a popular RL paradigm because it saves the interactions with…

Machine Learning · Computer Science 2024-03-21 Chen Gong , Zhou Yang , Yunpeng Bai , Junda He , Jieke Shi , Kecen Li , Arunesh Sinha , Bowen Xu , Xinwen Hou , David Lo , Tianhao Wang

Many reinforcement learning algorithms, particularly those that rely on return estimates for policy improvement, can suffer from poor sample efficiency and training instability due to high-variance return estimates. In this paper we…

Machine Learning · Computer Science 2026-01-06 Alexander W. Goodall , Edwin Hamel-De le Court , Francesco Belardinelli

Traditional offline reinforcement learning (RL) methods predominantly operate in a batch-constrained setting. This confines the algorithms to a specific state-action distribution present in the dataset, reducing the effects of…

Machine Learning · Statistics 2025-07-16 Charles A. Hepburn , Yue Jin , Giovanni Montana

Scaling reinforcement learning (RL) to recommender systems (RS) is promising since maximizing the expected cumulative rewards for RL agents meets the objective of RS, i.e., improving customers' long-term satisfaction. A key approach to this…

Machine Learning · Computer Science 2022-09-27 Chengqian Gao , Ke Xu , Kuangqi Zhou , Lanqing Li , Xueqian Wang , Bo Yuan , Peilin Zhao

Model-based offline reinforcement learning (RL), which builds a supervised transition model with logging dataset to avoid costly interactions with the online environment, has been a promising approach for offline policy optimization. As the…

Machine Learning · Computer Science 2023-09-06 Junming Yang , Xingguo Chen , Shengyuan Wang , Bolei Zhang

We consider the problem of joint channel assignment and power allocation in underlaid cellular vehicular-to-everything (C-V2X) systems where multiple vehicle-to-network (V2N) uplinks share the time-frequency resources with multiple…

Signal Processing · Electrical Eng. & Systems 2022-06-22 Hung V. Vu , Mohammad Farzanullah , Zheyu Liu , Duy H. N. Nguyen , Robert Morawski , Tho Le-Ngoc

The paradigm of decision-making has been revolutionised by reinforcement learning and deep learning. Although this has led to significant progress in domains such as robotics, healthcare, and finance, the use of RL in practice is…

Machine Learning · Computer Science 2026-02-23 Daqian Shao

Most deep reinforcement learning (RL) systems are not able to learn effectively from off-policy data, especially if they cannot explore online in the environment. These are critical shortcomings for applying RL to real-world problems where…

End-to-end learning robotic manipulation with high data efficiency is one of the key challenges in robotics. The latest methods that utilize human demonstration data and unsupervised representation learning has proven to be a promising…

Robotics · Computer Science 2021-10-22 Jin Li , Xianyuan Zhan , Zixu Xiao , Guyue Zhou

Offline-to-online reinforcement learning (O2O RL) faces a central challenge between retaining offline conservatism and adapting to online feedback under distribution shift. This challenge arises because data behavior evolves during…

Machine Learning · Computer Science 2026-05-19 Lipeng Zu , Yu Qian , Shayok Chakraborty , Xiaonan Zhang

Reinforcement Learning (RL) has demonstrated a great potential for automatically solving decision-making problems in complex uncertain environments. RL proposes a computational approach that allows learning through interaction in an…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-11-18 Yisel Garí , David A. Monge , Elina Pacini , Cristian Mateos , Carlos García Garino

We study the problem of learning optimal behavior from sub-optimal datasets for goal-conditioned offline reinforcement learning under sparse rewards, invertible actions and deterministic transitions. To mitigate the effects of…

Machine Learning · Computer Science 2026-02-12 Alfredo Reichlin , Miguel Vasco , Hang Yin , Danica Kragic

Offline reinforcement learning (RL) aims at learning a good policy from a batch of collected data, without extra interactions with the environment during training. However, current offline RL benchmarks commonly have a large reality gap,…

Machine Learning · Computer Science 2021-02-09 Rongjun Qin , Songyi Gao , Xingyuan Zhang , Zhen Xu , Shengkai Huang , Zewen Li , Weinan Zhang , Yang Yu

The prevalent use of benchmarks in current offline reinforcement learning (RL) research has led to a neglect of the imbalance of real-world dataset distributions in the development of models. The real-world offline RL dataset is often…

Machine Learning · Computer Science 2024-05-22 Li Jiang , Sijie Cheng , Jielin Qiu , Haoran Xu , Wai Kin Chan , Zhao Ding

Off-dynamics Reinforcement Learning (ODRL) seeks to transfer a policy from a source environment to a target environment characterized by distinct yet similar dynamics. In this context, traditional RL agents depend excessively on the…

Machine Learning · Computer Science 2024-07-16 Paul Daoudi , Christophe Prieur , Bogdan Robu , Merwan Barlier , Ludovic Dos Santos

Offline Reinforcement learning (RL) has shown potent in many safe-critical tasks in robotics where exploration is risky and expensive. However, it still struggles to acquire skills in temporally extended tasks. In this paper, we study the…

Robotics · Computer Science 2022-05-25 Jinning Li , Chen Tang , Masayoshi Tomizuka , Wei Zhan

Offline reinforcement learning (RL) provides a promising approach to avoid costly online interaction with the real environment. However, the performance of offline RL highly depends on the quality of the datasets, which may cause…

Robotics · Computer Science 2024-05-08 Yiwen Hou , Haoyuan Sun , Jinming Ma , Feng Wu

Offline Reinforcement Learning (RL) aims to learn a near-optimal policy from a fixed dataset of transitions collected by another policy. This problem has attracted a lot of attention recently, but most existing methods with strong…

Machine Learning · Computer Science 2023-05-23 Germano Gabbianelli , Gergely Neu , Nneka Okolo , Matteo Papini