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Offline reinforcement learning (RL) shows promise of applying RL to real-world problems by effectively utilizing previously collected data. Most existing offline RL algorithms use regularization or constraints to suppress extrapolation…

机器学习 · 计算机科学 2021-10-20 Xiaoteng Ma , Yiqin Yang , Hao Hu , Qihan Liu , Jun Yang , Chongjie Zhang , Qianchuan Zhao , Bin Liang

Offline reinforcement learning (RL) is a variant of RL where the policy is learned from a previously collected dataset of trajectories and rewards. In our work, we propose a practical approach to offline RL with large language models…

In recent years, significant progress has been made in multi-objective reinforcement learning (RL) research, which aims to balance multiple objectives by incorporating preferences for each objective. In most existing studies, specific…

机器学习 · 计算机科学 2024-09-17 Qian Lin , Zongkai Liu , Danying Mo , Chao Yu

Offline reinforcement learning aims to learn an agent from pre-collected datasets, avoiding unsafe and inefficient real-time interaction. However, inevitable access to out-ofdistribution actions during the learning process introduces…

人工智能 · 计算机科学 2026-03-06 Fan Zhang , Baoru Huang , Xin Zhang

Combining offline and online reinforcement learning (RL) is crucial for efficient and safe learning. However, previous approaches treat offline and online learning as separate procedures, resulting in redundant designs and limited…

机器学习 · 计算机科学 2024-03-19 Kun Lei , Zhengmao He , Chenhao Lu , Kaizhe Hu , Yang Gao , Huazhe Xu

Learning from datasets without interaction with environments (Offline Learning) is an essential step to apply Reinforcement Learning (RL) algorithms in real-world scenarios. However, compared with the single-agent counterpart, offline…

人工智能 · 计算机科学 2021-10-27 Yiqin Yang , Xiaoteng Ma , Chenghao Li , Zewu Zheng , Qiyuan Zhang , Gao Huang , Jun Yang , Qianchuan Zhao

The field of Offline Reinforcement Learning (RL) aims to derive effective policies from pre-collected datasets without active environment interaction. While traditional offline RL algorithms like Conservative Q-Learning (CQL) and Implicit…

机器学习 · 计算机科学 2025-11-21 Ali Murtaza Caunhye , Asad Jeewa

Inspired by the recent successes of Inverse Optimization (IO) across various application domains, we propose a novel offline Reinforcement Learning (ORL) algorithm for continuous state and action spaces, leveraging the convex loss function…

机器学习 · 计算机科学 2026-03-19 Ioannis Dimanidis , Tolga Ok , Peyman Mohajerin Esfahani

Offline reinforcement learning (RL) presents a promising approach for learning reinforced policies from offline datasets without the need for costly or unsafe interactions with the environment. However, datasets collected by humans in…

机器学习 · 计算机科学 2024-03-12 Rui Yang , Han Zhong , Jiawei Xu , Amy Zhang , Chongjie Zhang , Lei Han , Tong Zhang

In offline reinforcement learning (offline RL), one of the main challenges is to deal with the distributional shift between the learning policy and the given dataset. To address this problem, recent offline RL methods attempt to introduce…

机器学习 · 计算机科学 2021-11-16 Jianhao Wang , Wenzhe Li , Haozhe Jiang , Guangxiang Zhu , Siyuan Li , Chongjie Zhang

There is increasing interest in data-driven approaches for recommending optimal treatment strategies in many chronic disease management and critical care applications. Reinforcement learning methods are well-suited to this sequential…

机器学习 · 计算机科学 2023-06-14 Milashini Nambiar , Supriyo Ghosh , Priscilla Ong , Yu En Chan , Yong Mong Bee , Pavitra Krishnaswamy

Offline reinforcement learning (RL) methodologies enforce constraints on the policy to adhere closely to the behavior policy, thereby stabilizing value learning and mitigating the selection of out-of-distribution (OOD) actions during test…

机器学习 · 计算机科学 2024-06-18 Linjie Xu , Zhengyao Jiang , Jinyu Wang , Lei Song , Jiang Bian

To obtain a near-optimal policy with fewer interactions in Reinforcement Learning (RL), a promising approach involves the combination of offline RL, which enhances sample efficiency by leveraging offline datasets, and online RL, which…

机器学习 · 计算机科学 2024-11-18 Xiaoyu Wen , Xudong Yu , Rui Yang , Haoyuan Chen , Chenjia Bai , Zhen Wang

We study the offline reinforcement learning (RL) in the face of unmeasured confounders. Due to the lack of online interaction with the environment, offline RL is facing the following two significant challenges: (i) the agent may be…

机器学习 · 计算机科学 2022-09-20 Zuyue Fu , Zhengling Qi , Zhaoran Wang , Zhuoran Yang , Yanxun Xu , Michael R. Kosorok

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…

机器学习 · 计算机科学 2023-09-06 Junming Yang , Xingguo Chen , Shengyuan Wang , Bolei Zhang

Reinforcement learning (RL) in the real world necessitates the development of procedures that enable agents to explore without causing harm to themselves or others. The most successful solutions to the problem of safe RL leverage offline…

机器学习 · 计算机科学 2025-01-09 Alexander Quessy , Thomas Richardson , Sebastian East

The goal of an offline reinforcement learning (RL) algorithm is to learn optimal polices using historical (offline) data, without access to the environment for online exploration. One of the main challenges in offline RL is the distribution…

机器学习 · 计算机科学 2023-10-31 Kishan Panaganti , Zaiyan Xu , Dileep Kalathil , Mohammad Ghavamzadeh

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…

机器学习 · 计算机科学 2023-05-23 Germano Gabbianelli , Gergely Neu , Nneka Okolo , Matteo Papini

Offline reinforcement learning (RL) is challenged by the distributional shift between learning policies and datasets. To address this problem, existing works mainly focus on designing sophisticated algorithms to explicitly or implicitly…

机器学习 · 计算机科学 2022-10-18 Yang Yue , Bingyi Kang , Xiao Ma , Zhongwen Xu , Gao Huang , Shuicheng Yan

The recent success of supervised learning methods on ever larger offline datasets has spurred interest in the reinforcement learning (RL) field to investigate whether the same paradigms can be translated to RL algorithms. This research…

机器学习 · 计算机科学 2021-02-12 Mengjiao Yang , Ofir Nachum