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Recent advance in deep offline reinforcement learning (RL) has made it possible to train strong robotic agents from offline datasets. However, depending on the quality of the trained agents and the application being considered, it is often…

Robotics · Computer Science 2021-11-02 Seunghyun Lee , Younggyo Seo , Kimin Lee , Pieter Abbeel , Jinwoo Shin

Reinforcement Learning (RL) algorithms can solve challenging control problems directly from image observations, but they often require millions of environment interactions to do so. Recently, model-based RL algorithms have greatly improved…

Machine Learning · Computer Science 2023-06-16 Yifan Xu , Nicklas Hansen , Zirui Wang , Yung-Chieh Chan , Hao Su , Zhuowen Tu

World models predict future transitions from observations and actions. Existing works predominantly focus on image generation only. Visual feature-based world models, on the other hand, predict future visual features instead of raw video…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Xinyu Zhang , Zhengtong Xu , Yutian Tao , Yeping Wang , Yu She , Abdeslam Boularias

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

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

Vision-Language-Action (VLA) models have shown strong potential for general-purpose robotic manipulation, but their reliance on expert demonstrations limits their ability to learn from failures and perform self-corrections. Reinforcement…

Robotics · Computer Science 2025-11-13 Fangqi Zhu , Zhengyang Yan , Zicong Hong , Quanxin Shou , Xiao Ma , Song Guo

The goal of this paper is to improve the performance and reliability of vision-language-action (VLA) models through iterative online interaction. Since collecting policy rollouts in the real world is expensive, we investigate whether a…

Robotics · Computer Science 2026-02-17 Yanjiang Guo , Tony Lee , Lucy Xiaoyang Shi , Jianyu Chen , Percy Liang , Chelsea Finn

Offline reinforcement learning (RL) enables learning control policies by utilizing only prior experience, without any online interaction. This can allow robots to acquire generalizable skills from large and diverse datasets, without any…

Machine Learning · Computer Science 2021-09-24 Aviral Kumar , Anikait Singh , Stephen Tian , Chelsea Finn , Sergey Levine

This study proposes the use of a social learning method to estimate a global state within a multi-agent off-policy actor-critic algorithm for reinforcement learning (RL) operating in a partially observable environment. We assume that the…

Machine Learning · Computer Science 2024-07-09 Ainur Zhaikhan , Ali H. Sayed

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

Web agents based on large language models have demonstrated promising capability in automating web tasks. However, current web agents struggle to reason out sensible actions due to the limitations of predicting environment changes, and…

Artificial Intelligence · Computer Science 2026-02-18 Zhouzhou Shen , Xueyu Hu , Xiyun Li , Tianqing Fang , Juncheng Li , Shengyu Zhang

Intelligent agents need to generalize from past experience to achieve goals in complex environments. World models facilitate such generalization and allow learning behaviors from imagined outcomes to increase sample-efficiency. While…

Machine Learning · Computer Science 2022-02-15 Danijar Hafner , Timothy Lillicrap , Mohammad Norouzi , Jimmy Ba

Reinforcement Learning (RL) has made significant strides in complex tasks but struggles in multi-task settings with different embodiments. World model methods offer scalability by learning a simulation of the environment but often rely on…

Machine Learning · Computer Science 2025-02-25 Ignat Georgiev , Varun Giridhar , Nicklas Hansen , Animesh Garg

Model-based offline Reinforcement Learning (RL) constructs environment models from offline datasets to perform conservative policy optimization. Existing approaches focus on learning state transitions through ensemble models, rollouting…

Machine Learning · Computer Science 2025-03-27 Hongye Cao , Fan Feng , Jing Huo , Shangdong Yang , Meng Fang , Tianpei Yang , Yang Gao

The offline reinforcement learning (RL) paradigm provides a general recipe to convert static behavior datasets into policies that can perform better than the policy that collected the data. While policy constraints, conservatism, and other…

Artificial Intelligence · Computer Science 2023-10-19 Jianlan Luo , Perry Dong , Jeffrey Wu , Aviral Kumar , Xinyang Geng , Sergey Levine

Recent high-capacity vision-language-action (VLA) models have demonstrated impressive performance on a range of robotic manipulation tasks by imitating human demonstrations. However, exploiting offline data with limited visited states will…

Robotics · Computer Science 2025-05-27 Guanxing Lu , Wenkai Guo , Chubin Zhang , Yuheng Zhou , Haonan Jiang , Zifeng Gao , Yansong Tang , Ziwei Wang

Offline reinforcement learning (RL) learns effective policies from a static target dataset. The performance of state-of-the-art offline RL algorithms notwithstanding, it relies on the size of the target dataset, and it degrades if limited…

Machine Learning · Computer Science 2026-02-10 Weiqin Chen , Xinjie Zhang , Sandipan Mishra , Santiago Paternain

Sequential decision-making agents struggle with long horizon tasks, since solving them requires multi-step reasoning. Most reinforcement learning (RL) algorithms address this challenge by improved credit assignment, introducing memory…

Machine Learning · Computer Science 2023-04-04 Bogdan Mazoure , Jake Bruce , Doina Precup , Rob Fergus , Ankit Anand

We introduce Recursive Agent Optimization (RAO), a reinforcement learning approach for training recursive agents: agents that can spawn and delegate sub-tasks to new instantiations of themselves recursively. Recursive agents implement an…

Machine Learning · Computer Science 2026-05-08 Apurva Gandhi , Satyaki Chakraborty , Xiangjun Wang , Aviral Kumar , Graham Neubig

Modeling of real-world biological multi-agents is a fundamental problem in various scientific and engineering fields. Reinforcement learning (RL) is a powerful framework to generate flexible and diverse behaviors in cyberspace; however,…

Artificial Intelligence · Computer Science 2023-12-20 Keisuke Fujii , Kazushi Tsutsui , Atom Scott , Hiroshi Nakahara , Naoya Takeishi , Yoshinobu Kawahara