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Offline reinforcement learning (RL) extends the paradigm of classical RL algorithms to purely learning from static datasets, without interacting with the underlying environment during the learning process. A key challenge of offline RL is…

Machine Learning · Computer Science 2022-06-16 Shentao Yang , Yihao Feng , Shujian Zhang , Mingyuan Zhou

Offline reinforcement learning (RL) provides a promising direction to exploit massive amount of offline data for complex decision-making tasks. Due to the distribution shift issue, current offline RL algorithms are generally designed to be…

Machine Learning · Computer Science 2022-10-25 Rui Yang , Chenjia Bai , Xiaoteng Ma , Zhaoran Wang , Chongjie Zhang , Lei Han

Offline reinforcement learning (RL) aims at learning policies from previously collected static trajectory data without interacting with the real environment. Recent works provide a novel perspective by viewing offline RL as a generic…

Machine Learning · Computer Science 2022-10-19 Kerong Wang , Hanye Zhao , Xufang Luo , Kan Ren , Weinan Zhang , Dongsheng Li

We consider off-dynamics reinforcement learning (RL) where one needs to transfer policies across different domains with dynamics mismatch. Despite the focus on developing dynamics-aware algorithms, this field is hindered due to the lack of…

Machine Learning · Computer Science 2024-10-29 Jiafei Lyu , Kang Xu , Jiacheng Xu , Mengbei Yan , Jingwen Yang , Zongzhang Zhang , Chenjia Bai , Zongqing Lu , Xiu Li

Reinforcement learning (RL) is typically concerned with estimating stationary policies or single-step models, leveraging the Markov property to factorize problems in time. However, we can also view RL as a generic sequence modeling problem,…

Machine Learning · Computer Science 2021-11-30 Michael Janner , Qiyang Li , Sergey Levine

With the widespread adoption of deep learning, reinforcement learning (RL) has experienced a dramatic increase in popularity, scaling to previously intractable problems, such as playing complex games from pixel observations, sustaining…

Machine Learning · Computer Science 2023-04-20 Rafael Figueiredo Prudencio , Marcos R. O. A. Maximo , Esther Luna Colombini

Offline Safe Reinforcement Learning (RL) seeks to address safety constraints by learning from static datasets and restricting exploration. However, these approaches heavily rely on the dataset and struggle to generalize to unseen scenarios…

Robotics · Computer Science 2025-03-04 Chenyang Cao , Yucheng Xin , Silang Wu , Longxiang He , Zichen Yan , Junbo Tan , Xueqian Wang

This article reviews the recent advances on the statistical foundation of reinforcement learning (RL) in the offline and low-adaptive settings. We will start by arguing why offline RL is the appropriate model for almost any real-life ML…

Machine Learning · Computer Science 2025-01-07 Ming Yin , Mengdi Wang , Yu-Xiang Wang

Offline reinforcement learning (ORL) holds great promise for robot learning due to its ability to learn from arbitrary pre-generated experience. However, current ORL benchmarks are almost entirely in simulation and utilize contrived…

Robotics · Computer Science 2022-10-14 Gaoyue Zhou , Liyiming Ke , Siddhartha Srinivasa , Abhinav Gupta , Aravind Rajeswaran , Vikash Kumar

Offline reinforcement learning (RL) enables policy optimization using static datasets, avoiding the risks and costs of extensive real-world exploration. However, it struggles with suboptimal offline behaviors and inaccurate value estimation…

Machine Learning · Computer Science 2025-05-20 Minting Pan , Yitao Zheng , Jiajian Li , Yunbo Wang , Xiaokang Yang

Offline Reinforcement Learning (RL) aims to turn large datasets into powerful decision-making engines without any online interactions with the environment. This great promise has motivated a large amount of research that hopes to replicate…

Machine Learning · Computer Science 2020-12-01 Louis Monier , Jakub Kmec , Alexandre Laterre , Thomas Pierrot , Valentin Courgeau , Olivier Sigaud , Karim Beguir

Deep reinforcement learning algorithms require large amounts of experience to learn an individual task. While in principle meta-reinforcement learning (meta-RL) algorithms enable agents to learn new skills from small amounts of experience,…

Machine Learning · Computer Science 2019-03-21 Kate Rakelly , Aurick Zhou , Deirdre Quillen , Chelsea Finn , Sergey Levine

Precise robot manipulation is critical for fine-grained applications such as chemical and biological experiments, where even small errors (e.g., reagent spillage) can invalidate an entire task. Existing approaches often rely on…

Robotics · Computer Science 2026-02-13 Xiangyu Chen , Chuhao Zhou , Yuxi Liu , Jianfei Yang

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

Offline reinforcement learning (RL) defines a sample-efficient learning paradigm, where a policy is learned from static and previously collected datasets without additional interaction with the environment. The major obstacle to offline RL…

Machine Learning · Computer Science 2022-11-16 Yunfan Zhou , Xijun Li , Qingyu Qu

Offline reinforcement learning (RL) aims to learn an optimal policy from a static dataset, making it particularly valuable in scenarios where data collection is costly, such as robotics. A major challenge in offline RL is distributional…

Machine Learning · Computer Science 2025-07-16 Motoki Omura , Yusuke Mukuta , Kazuki Ota , Takayuki Osa , Tatsuya Harada

In reinforcement learning (RL), there are two major settings for interacting with the environment: online and offline. Online methods explore the environment at significant time cost, and offline methods efficiently obtain reward signals by…

Machine Learning · Computer Science 2023-06-19 Changyu Chen , Xiting Wang , Yiqiao Jin , Victor Ye Dong , Li Dong , Jie Cao , Yi Liu , Rui Yan

Consider the following instance of the Offline Meta Reinforcement Learning (OMRL) problem: given the complete training logs of $N$ conventional RL agents, trained on $N$ different tasks, design a meta-agent that can quickly maximize reward…

Machine Learning · Computer Science 2021-02-15 Ron Dorfman , Idan Shenfeld , Aviv Tamar

Online reinforcement learning (RL) methods are often data-inefficient or unreliable, making them difficult to train on real robotic hardware, especially quadruped robots. Learning robotic tasks from pre-collected data is a promising…

Robotics · Computer Science 2024-10-28 Hongyin Zhang , Shuyu Yang , Donglin Wang

Offline reinforcement learning (RL) enables policy learning from static data but often suffers from poor coverage of the state-action space and distributional shift problems. This problem can be addressed by allowing limited online…

Machine Learning · Computer Science 2026-02-03 Soumyadeep Roy , Shashwat Kushwaha , Ambedkar Dukkipati