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Reinforcement Learning (RL) enables an intelligent agent to optimise its performance in a task by continuously taking action from an observed state and receiving a feedback from the environment in form of rewards. RL typically uses tables…

人工智能 · 计算机科学 2025-01-28 Alberto Castagna

Intelligent agents must pursue their goals in complex environments with partial information and often limited computational capacity. Reinforcement learning methods have achieved great success by creating agents that optimize engineered…

机器学习 · 计算机科学 2021-06-07 Alejandro Daniel Noel , Charel van Hoof , Beren Millidge

Offline reinforcement learning (RL) aims to learn a policy that maximizes the expected return using a given static dataset of transitions. However, offline RL faces the distribution shift problem. The policy constraint offline RL method is…

机器学习 · 计算机科学 2025-12-24 Yuanhao Chen , Qi Liu , Pengbin Chen , Zhongjian Qiao , Yanjie Li

Feature transformation enhances downstream task performance by generating informative features through mathematical feature crossing. Despite the advancements in deep learning, feature transformation remains essential for structured data,…

机器学习 · 计算机科学 2026-03-02 Tao Zhe , Huazhen Fang , Kunpeng Liu , Qian Lou , Tamzidul Hoque , Dongjie Wang

Reinforcement learning (RL) is widely used in autonomous driving tasks and training RL models typically involves in a multi-step process: pre-training RL models on simulators, uploading the pre-trained model to real-life robots, and…

机器学习 · 计算机科学 2019-10-15 Xinle Liang , Yang Liu , Tianjian Chen , Ming Liu , Qiang Yang

Learning effective reinforcement learning (RL) policies to solve real-world complex tasks can be quite challenging without a high-fidelity simulation environment. In most cases, we are only given imperfect simulators with simplified…

机器学习 · 计算机科学 2025-10-16 Haoyi Niu , Shubham Sharma , Yiwen Qiu , Ming Li , Guyue Zhou , Jianming Hu , Xianyuan Zhan

Existing theoretical studies on offline reinforcement learning (RL) mostly consider a dataset sampled directly from the target task. In practice, however, data often come from several heterogeneous but related sources. Motivated by this…

机器学习 · 统计学 2023-06-16 Chengshuai Shi , Wei Xiong , Cong Shen , Jing Yang

Offline reinforcement learning (RL) aims to find performant policies from logged data without further environment interaction. Model-based algorithms, which learn a model of the environment from the dataset and perform conservative policy…

机器学习 · 计算机科学 2022-10-12 Marc Rigter , Bruno Lacerda , Nick Hawes

Conservatism has led to significant progress in offline reinforcement learning (RL) where an agent learns from pre-collected datasets. However, as many real-world scenarios involve interaction among multiple agents, it is important to…

机器学习 · 计算机科学 2022-04-05 Ling Pan , Longbo Huang , Tengyu Ma , Huazhe Xu

Reinforcement learning (RL) algorithms usually require a substantial amount of interaction data and perform well only for specific tasks in a fixed environment. In some scenarios such as healthcare, however, usually only few records are…

机器学习 · 计算机科学 2020-12-17 Chaochao Lu , Biwei Huang , Ke Wang , José Miguel Hernández-Lobato , Kun Zhang , Bernhard Schölkopf

Reinforcement Learning (RL) can effectively learn complex policies. However, learning these policies often demands extensive trial-and-error interactions with the environment. In many real-world scenarios, this approach is not practical due…

机器学习 · 计算机科学 2024-02-19 Linh Le Pham Van , Hung The Tran , Sunil Gupta

Many practical applications of reinforcement learning (RL) constrain the agent to learn from a fixed offline dataset of logged interactions, which has already been gathered, without offering further possibility for data collection. However,…

机器学习 · 计算机科学 2021-07-06 Zizhou Su

Offline reinforcement learning (RL) refers to the problem of learning policies from a static dataset of environment interactions. Offline RL enables extensive use and re-use of historical datasets, while also alleviating safety concerns…

机器学习 · 计算机科学 2020-12-22 Rafael Rafailov , Tianhe Yu , Aravind Rajeswaran , Chelsea Finn

Designing reliable decision strategies for autonomous urban driving is challenging. Reinforcement learning (RL) has been used to automatically derive suitable behavior in uncertain environments, but it does not provide any guarantee on the…

机器人学 · 计算机科学 2019-05-31 Maxime Bouton , Jesper Karlsson , Alireza Nakhaei , Kikuo Fujimura , Mykel J. Kochenderfer , Jana Tumova

Pretraining reinforcement learning (RL) models on offline datasets is a promising way to improve their training efficiency in online tasks, but challenging due to the inherent mismatch in dynamics and behaviors across various tasks. We…

机器学习 · 计算机科学 2024-06-06 Minting Pan , Yitao Zheng , Yunbo Wang , Xiaokang Yang

Reinforcement learning (RL) has achieved impressive performance in a variety of online settings in which an agent's ability to query the environment for transitions and rewards is effectively unlimited. However, in many practical…

机器学习 · 计算机科学 2021-05-06 Anurag Ajay , Aviral Kumar , Pulkit Agrawal , Sergey Levine , Ofir Nachum

Despite the recent success of deep reinforcement learning (RL), domain adaptation remains an open problem. Although the generalization ability of RL agents is critical for the real-world applicability of Deep RL, zero-shot policy transfer…

机器学习 · 计算机科学 2021-09-06 Jinwei Xing , Takashi Nagata , Kexin Chen , Xinyun Zou , Emre Neftci , Jeffrey L. Krichmar

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…

机器学习 · 计算机科学 2024-07-09 Ainur Zhaikhan , Ali H. Sayed

Evaluating autonomous vehicle stacks (AVs) in simulation typically involves replaying driving logs from real-world recorded traffic. However, agents replayed from offline data are not reactive and hard to intuitively control. Existing…

机器人学 · 计算机科学 2024-10-16 Luke Rowe , Roger Girgis , Anthony Gosselin , Bruno Carrez , Florian Golemo , Felix Heide , Liam Paull , Christopher Pal

We consider the problem of offline reinforcement learning where only a set of system transitions is made available for policy optimization. Following recent advances in the field, we consider a model-based reinforcement learning algorithm…

机器学习 · 计算机科学 2024-02-06 Abdelhakim Benechehab , Albert Thomas , Balázs Kégl