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We introduce a reinforcement learning (RL) environment to design and benchmark control strategies aimed at reducing drag in turbulent fluid flows enclosed in a channel. The environment provides a framework for computationally-efficient,…

Fluid Dynamics · Physics 2023-02-09 L. Guastoni , J. Rabault , P. Schlatter , H. Azizpour , R. Vinuesa

Owe to the recent advancements in Artificial Intelligence especially deep learning, many data-driven decision support systems have been implemented to facilitate medical doctors in delivering personalized care. We focus on the deep…

Machine Learning · Computer Science 2019-07-24 Siqi Liu , Kee Yuan Ngiam , Mengling Feng

Deep Reinforcement Learning (DRL) is a promising approach for teaching robots new behaviour. However, one of its main limitations is the need for carefully hand-coded reward signals by an expert. We argue that it is crucial to automate the…

Robotics · Computer Science 2021-08-09 Abdalkarim Mohtasib , Gerhard Neumann , Heriberto Cuayahuitl

Closed-loop control remains an open challenge in soft robotics. The nonlinear responses of soft actuators under dynamic loading conditions limit the use of analytic models for soft robot control. Traditional methods of controlling soft…

Hierarchical reinforcement learning (HRL) is a promising approach to extend traditional reinforcement learning (RL) methods to solve more complex tasks. Yet, the majority of current HRL methods require careful task-specific design and…

Machine Learning · Computer Science 2018-10-08 Ofir Nachum , Shixiang Gu , Honglak Lee , Sergey Levine

Deep Reinforcement Learning (DRL) enables robots to perform some intelligent tasks end-to-end. However, there are still many challenges for long-horizon sparse-reward robotic manipulator tasks. On the one hand, a sparse-reward setting…

Robotics · Computer Science 2021-12-07 Guangming Wang , Minjian Xin , Wenhua Wu , Zhe Liu , Hesheng Wang

A practical approach to robot reinforcement learning is to first collect a large batch of real or simulated robot interaction data, using some data collection policy, and then learn from this data to perform various tasks, using offline…

Robotics · Computer Science 2021-06-02 Shadi Endrawis , Gal Leibovich , Guy Jacob , Gal Novik , Aviv Tamar

We propose an open-source python platform for applications of Deep Reinforcement Learning (DRL) in fluid mechanics. DRL has been widely used in optimizing decision-making in nonlinear and high-dimensional problems. Here, an agent maximizes…

Fluid Dynamics · Physics 2024-06-19 Qiulei Wang , Lei Yan , Gang Hu , Chao Li , Yiqing Xiao , Hao Xiong , Jean Rabault , Bernd R. Noack

We propose a novel framework for Deep Reinforcement Learning (DRL) in modular robotics to train a robot directly from joint states, using traditional robotic tools. We use an state-of-the-art implementation of the Proximal Policy…

This paper proposes a new control framework for manipulating soft objects. A Deep Reinforcement Learning (DRL) approach is used to make the shape of a deformable object reach a set of desired points by controlling a robotic arm which…

Deep reinforcement learning enables algorithms to learn complex behavior, deal with continuous action spaces and find good strategies in environments with high dimensional state spaces. With deep reinforcement learning being an active area…

Machine Learning · Computer Science 2018-10-17 Winfried Lötzsch

Event-triggered control (ETC) methods can achieve high-performance control with a significantly lower number of samples compared to usual, time-triggered methods. These frameworks are often based on a mathematical model of the system and…

Systems and Control · Computer Science 2018-09-17 Dominik Baumann , Jia-Jie Zhu , Georg Martius , Sebastian Trimpe

Deep reinforcement learning (DRL) demonstrates its potential in learning a model-free navigation policy for robot visual navigation. However, the data-demanding algorithm relies on a large number of navigation trajectories in training.…

Robotics · Computer Science 2018-02-27 Kaichun Mo , Haoxiang Li , Zhe Lin , Joon-Young Lee

Although deep reinforcement learning has recently been very successful at learning complex behaviors, it requires a tremendous amount of data to learn a task. One of the fundamental reasons causing this limitation lies in the nature of the…

Robotics · Computer Science 2022-09-19 Zhenshan Bing , Alexander Koch , Xiangtong Yao , Kai Huang , Alois Knoll

Deep reinforcement learning (DRL) has been proven its efficiency in capturing users' dynamic interests in recent literature. However, training a DRL agent is challenging, because of the sparse environment in recommender systems (RS), DRL…

Information Retrieval · Computer Science 2022-09-20 Xiaocong Chen , Siyu Wang , Lina Yao , Lianyong Qi , Yong Li

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…

Machine Learning · Computer Science 2024-06-05 Zhiyao Luo , Yangchen Pan , Peter Watkinson , Tingting Zhu

Demonstration-guided reinforcement learning (RL) is a promising approach for learning complex behaviors by leveraging both reward feedback and a set of target task demonstrations. Prior approaches for demonstration-guided RL treat every new…

Machine Learning · Computer Science 2021-07-22 Karl Pertsch , Youngwoon Lee , Yue Wu , Joseph J. Lim

Current end-to-end deep Reinforcement Learning (RL) approaches require jointly learning perception, decision-making and low-level control from very sparse reward signals and high-dimensional inputs, with little capability of incorporating…

Machine Learning · Computer Science 2019-10-10 Vibhavari Dasagi , Robert Lee , Serena Mou , Jake Bruce , Niko Sünderhauf , Jürgen Leitner

Developing and testing automated driving models in the real world might be challenging and even dangerous, while simulation can help with this, especially for challenging maneuvers. Deep reinforcement learning (DRL) has the potential to…

In this paper we address the challenge of exploration in deep reinforcement learning for robotic manipulation tasks. In sparse goal settings, an agent does not receive any positive feedback until randomly achieving the goal, which becomes…

Robotics · Computer Science 2021-02-23 Nikola Vulin , Sammy Christen , Stefan Stevsic , Otmar Hilliges
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