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Preference-based reinforcement learning (PbRL) is a suitable approach for style adaptation of pre-trained robotic behavior: adapting the robot's policy to follow human user preferences while still being able to perform the original task.…

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

Reward shaping is an effective technique for incorporating domain knowledge into reinforcement learning (RL). Existing approaches such as potential-based reward shaping normally make full use of a given shaping reward function. However,…

Machine Learning · Computer Science 2020-11-06 Yujing Hu , Weixun Wang , Hangtian Jia , Yixiang Wang , Yingfeng Chen , Jianye Hao , Feng Wu , Changjie Fan

In the present paper, we propose a decoder-free extension of Dreamer, a leading model-based reinforcement learning (MBRL) method from pixels. Dreamer is a sample- and cost-efficient solution to robot learning, as it is used to train latent…

Machine Learning · Computer Science 2021-03-15 Masashi Okada , Tadahiro Taniguchi

Profile extrusion is a continuous production process for manufacturing plastic profiles from molten polymer. Especially interesting is the design of the die, through which the melt is pressed to attain the desired shape. However, due to an…

Computational Engineering, Finance, and Science · Computer Science 2023-04-05 Clemens Fricke , Daniel Wolff , Marco Kemmerling , Stefanie Elgeti

Model-free reinforcement learning (RL) is a powerful approach for learning control policies directly from high-dimensional state and observation. However, it tends to be data-inefficient, which is especially costly in robotic learning…

Robotics · Computer Science 2020-10-14 Xubo Lyu , Mo Chen

Recent advances in supervised learning and reinforcement learning have provided new opportunities to apply related methodologies to automated driving. However, there are still challenges to achieve automated driving maneuvers in dynamically…

Machine Learning · Computer Science 2020-08-31 Fei Ye , Pin Wang , Ching-Yao Chan , Jiucai Zhang

In this work, we focus on a robotic unloading problem from visual observations, where robots are required to autonomously unload stacks of parcels using RGB-D images as their primary input source. While supervised and imitation learning…

Robotics · Computer Science 2023-09-14 Vittorio Giammarino , Alberto Giammarino , Matthew Pearce

Soft robotic crawlers are mobile robots that utilize soft body deformability and compliance to achieve locomotion through surface contact. Designing control strategies for such systems is challenging due to model inaccuracies, sensor noise,…

Robotics · Computer Science 2025-10-08 Vaughn Gzenda , Robin Chhabra

In machine learning, meta-learning methods aim for fast adaptability to unknown tasks using prior knowledge. Model-based meta-reinforcement learning combines reinforcement learning via world models with Meta Reinforcement Learning (MRL) for…

Robotics · Computer Science 2022-10-10 Karam Daaboul , Joel Ikels , Marius Zöllner

Model-based reinforcement learning (MBRL) has been proposed as a promising alternative solution to tackle the high sampling cost challenge in the canonical reinforcement learning (RL), by leveraging a learned model to generate synthesized…

Machine Learning · Computer Science 2019-06-06 Yuanlong Li , Linsen Dong , Xin Zhou , Yonggang Wen , Kyle Guan

Modeling and manipulating elasto-plastic objects are essential capabilities for robots to perform complex industrial and household interaction tasks (e.g., stuffing dumplings, rolling sushi, and making pottery). However, due to the high…

Robotics · Computer Science 2022-05-09 Haochen Shi , Huazhe Xu , Zhiao Huang , Yunzhu Li , Jiajun Wu

Deformable object manipulation tasks have long been regarded as challenging robotic problems. However, until recently very little work has been done on the subject, with most robotic manipulation methods being developed for rigid objects.…

Robotics · Computer Science 2022-08-04 Rita Laezza , Yiannis Karayiannidis

Deep Reinforcement Learning (DRL) is a viable solution for automating repetitive surgical subtasks due to its ability to learn complex behaviours in a dynamic environment. This task automation could lead to reduced surgeon's cognitive…

Differentiable environments have heralded new possibilities for learning control policies by offering rich differentiable information that facilitates gradient-based methods. In comparison to prevailing model-free reinforcement learning…

Machine Learning · Computer Science 2025-03-04 Xiaoyuan Zhang , Xinyan Cai , Bo Liu , Weidong Huang , Song-Chun Zhu , Siyuan Qi , Yaodong Yang

Reward shaping is one of the most effective methods to tackle the crucial yet challenging problem of credit assignment in Reinforcement Learning (RL). However, designing shaping functions usually requires much expert knowledge and…

Machine Learning · Computer Science 2019-01-29 Haosheng Zou , Tongzheng Ren , Dong Yan , Hang Su , Jun Zhu

Current image-based reinforcement learning (RL) algorithms typically operate on the whole image without performing object-level reasoning. This leads to inefficient goal sampling and ineffective reward functions. In this paper, we improve…

Machine Learning · Computer Science 2020-11-16 Yufei Wang , Gautham Narayan Narasimhan , Xingyu Lin , Brian Okorn , David Held

A majority of microrobots are constructed using compliant materials that are difficult to model analytically, limiting the utility of traditional model-based controllers. Challenges in data collection on microrobots and large errors between…

Robotics · Computer Science 2021-09-09 Joshua Gruenstein , Tao Chen , Neel Doshi , Pulkit Agrawal

Manipulating objects is a hallmark of human intelligence, and an important task in domains such as robotics. In principle, Reinforcement Learning (RL) offers a general approach to learn object manipulation. In practice, however, domains…

Robotics · Computer Science 2024-04-02 Dan Haramati , Tal Daniel , Aviv Tamar

Deep reinforcement learning (DRL) has been proven to be a powerful paradigm for learning complex control policy autonomously. Numerous recent applications of DRL in robotic grasping have successfully trained DRL robotic agents end-to-end,…

Robotics · Computer Science 2020-07-03 Zhixin Chen , Mengxiang Lin , Zhixin Jia , Shibo Jian