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Leveraging many sources of offline robot data requires grappling with the heterogeneity of such data. In this paper, we focus on one particular aspect of heterogeneity: learning from offline data collected at different control frequencies.…

机器学习 · 计算机科学 2022-07-27 Kaylee Burns , Tianhe Yu , Chelsea Finn , Karol Hausman

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…

Leveraging offline data is a promising way to improve the sample efficiency of online reinforcement learning (RL). This paper expands the pool of usable data for offline-to-online RL by leveraging abundant non-curated data that is…

Care coordination and population health management programs serve large Medicaid and safety-net populations and must be auditable, efficient, and adaptable. While clinical risk for outreach modalities is typically low, time and opportunity…

计算机与社会 · 计算机科学 2025-09-23 Sanjay Basu , Sadiq Y. Patel , Parth Sheth , Bhairavi Muralidharan , Namrata Elamaran , Aakriti Kinra , Rajaie Batniji

Offline reinforcement learning (RL) algorithms are applied to learn performant, well-generalizing policies when provided with a static dataset of interactions. Many recent approaches to offline RL have seen substantial success, but with one…

机器学习 · 计算机科学 2024-07-30 Padmanaba Srinivasan , William Knottenbelt

The potential of offline reinforcement learning (RL) is that high-capacity models trained on large, heterogeneous datasets can lead to agents that generalize broadly, analogously to similar advances in vision and NLP. However, recent works…

机器学习 · 计算机科学 2023-04-19 Aviral Kumar , Rishabh Agarwal , Xinyang Geng , George Tucker , Sergey Levine

This paper is a study of reinforcement learning (RL) as an optimal-control strategy for control of nonlinear valves. It is evaluated against the PID (proportional-integral-derivative) strategy, using a unified framework. RL is an autonomous…

机器学习 · 计算机科学 2021-02-05 Rajesh Siraskar

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…

机器学习 · 计算机科学 2022-06-16 Shentao Yang , Yihao Feng , Shujian Zhang , Mingyuan Zhou

The recent development of reinforcement learning (RL) has boosted the adoption of online RL for wireless radio resource management (RRM). However, online RL algorithms require direct interactions with the environment, which may be…

信息论 · 计算机科学 2023-11-21 Kun Yang , Cong Shen , Jing Yang , Shu-ping Yeh , Jerry Sydir

Currently, reinforcement learning (RL), especially deep RL, has received more and more attention in the research area. However, the security of RL has been an obvious problem due to the attack manners becoming mature. In order to defend…

机器学习 · 计算机科学 2023-10-04 Jiarui Yao , Simon Shaolei Du

Meta-reinforcement learning (RL) methods can meta-train policies that adapt to new tasks with orders of magnitude less data than standard RL, but meta-training itself is costly and time-consuming. If we can meta-train on offline data, then…

机器学习 · 计算机科学 2022-07-08 Vitchyr H. Pong , Ashvin Nair , Laura Smith , Catherine Huang , Sergey Levine

In the rapidly changing healthcare landscape, the implementation of offline reinforcement learning (RL) in dynamic treatment regimes (DTRs) presents a mix of unprecedented opportunities and challenges. This position paper offers a critical…

机器学习 · 计算机科学 2024-06-05 Zhiyao Luo , Yangchen Pan , Peter Watkinson , Tingting Zhu

Reinforcement Learning (RL) applied in healthcare can lead to unsafe medical decisions and treatment, such as excessive dosages or abrupt changes, often due to agents overlooking common-sense constraints. Consequently, Constrained…

机器学习 · 计算机科学 2024-10-15 Nan Fang , Guiliang Liu , Wei Gong

Offline reinforcement learning (RL) optimizes the policy on a previously collected dataset without any interactions with the environment, yet usually suffers from the distributional shift problem. To mitigate this issue, a typical solution…

机器学习 · 计算机科学 2023-09-06 Qisen Yang , Shenzhi Wang , Qihang Zhang , Gao Huang , Shiji Song

In offline reinforcement learning (RL), we seek to utilize offline data to evaluate (or learn) policies in scenarios where the data are collected from a distribution that substantially differs from that of the target policy to be evaluated.…

机器学习 · 计算机科学 2021-03-09 Ruosong Wang , Yifan Wu , Ruslan Salakhutdinov , Sham M. Kakade

Offline reinforcement learning proposes to learn policies from large collected datasets without interacting with the physical environment. These algorithms have made it possible to learn useful skills from data that can then be deployed in…

机器学习 · 计算机科学 2021-07-06 Samarth Sinha , Ajay Mandlekar , Animesh Garg

Offline reinforcement learning (RL) has increasingly become the focus of the artificial intelligent research due to its wide real-world applications where the collection of data may be difficult, time-consuming, or costly. In this paper, we…

机器学习 · 计算机科学 2021-05-13 Chenyang Xi , Bo Tang , Jiajun Shen , Xinfu Liu , Feiyu Xiong , Xueying Li

Offline reinforcement learning (RL) aims to learn a policy using only pre-collected and fixed data. Although avoiding the time-consuming online interactions in RL, it poses challenges for out-of-distribution (OOD) state actions and often…

机器学习 · 计算机科学 2023-06-23 Jinxin Liu , Ziqi Zhang , Zhenyu Wei , Zifeng Zhuang , Yachen Kang , Sibo Gai , Donglin Wang

This paper studies tabular reinforcement learning (RL) in the hybrid setting, which assumes access to both an offline dataset and online interactions with the unknown environment. A central question boils down to how to efficiently utilize…

机器学习 · 计算机科学 2023-05-18 Gen Li , Wenhao Zhan , Jason D. Lee , Yuejie Chi , Yuxin Chen

As critically ill patients frequently develop anemia or coagulopathy, transfusion of blood products is a frequent intervention in the Intensive Care Units (ICU). However, inappropriate transfusion decisions made by physicians are often…

机器学习 · 计算机科学 2022-06-30 Yuqing Wang , Yun Zhao , Linda Petzold