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This study is aimed at addressing the problem of fault tolerance of quadruped robots to actuator failure, which is critical for robots operating in remote or extreme environments. In particular, an adaptive curriculum reinforcement learning…

Robotics · Computer Science 2024-10-28 Wataru Okamoto , Hiroshi Kera , Kazuhiko Kawamoto

Deep reinforcement learning (DRL) is a promising way to achieve human-like autonomous driving. However, the low sample efficiency and difficulty of designing reward functions for DRL would hinder its applications in practice. In light of…

Robotics · Computer Science 2021-10-29 Zhiyu Huang , Jingda Wu , Chen Lv

The adoption of Reinforcement Learning (RL) in several human-centred applications provides robots with autonomous decision-making capabilities and adaptability based on the observations of the operating environment. In such scenarios,…

Traditionally artificial neural networks (ANNs) are trained by minimizing the cross-entropy between a provided groundtruth delta distribution (encoded as one-hot vector) and the ANN's predictive softmax distribution. It seems, however,…

Computer Vision and Pattern Recognition · Computer Science 2018-12-31 Pooran Singh Negi , David chan , Mohammad Mahoor

Reward learning enables robots to learn adaptable behaviors from human input. Traditional methods model the reward as a linear function of hand-crafted features, but that requires specifying all the relevant features a priori, which is…

Robotics · Computer Science 2022-01-19 Andreea Bobu , Marius Wiggert , Claire Tomlin , Anca D. Dragan

Intrusion detection is one of the important mechanisms that provide computer networks security. Due to an increase in attacks and growing dependence upon other fields such as medicine, commerce, and engineering, offering services over a…

Machine Learning · Computer Science 2022-06-14 Siamak Parhizkari , Mohammad Bagher Menhaj , Atena Sajedin

A critical need in assistive robotics, such as assistive wheelchairs for navigation, is a need to learn task intent and safety guarantees through user interactions in order to ensure safe task performance. For tasks where the objectives…

Robotics · Computer Science 2021-10-12 Ahalya Prabhakar , Aude Billard

Due to real-world dynamics and hardware uncertainty, robots inevitably fail in task executions, resulting in undesired or even dangerous executions. In order to avoid failures and improve robot performance, it is critical to identify and…

Robotics · Computer Science 2021-06-30 Boyi Song , Yuntao Peng , Ruijiao Luo , Rui Liu

Robots for physical Human-Robot Collaboration (pHRC) systems need to change their behavior and how they operate in consideration of several factors, such as the performance and intention of a human co-worker and the capabilities of…

Robotics · Computer Science 2023-10-03 Avinash Singh , Dikai Liu , Chin-Teng Lin

Robotic arms, integral in domestic care for individuals with motor impairments, enable them to perform Activities of Daily Living (ADLs) independently, reducing dependence on human caregivers. These collaborative robots require users to…

Human-Computer Interaction · Computer Science 2024-01-17 Max Pascher , Kevin Zinta , Jens Gerken

Purpose: Real-life applications using quadrotors introduce a number of disturbances and time-varying properties that pose a challenge to flight controllers. We observed that, when a quadrotor is tasked with picking up and dropping a…

Robotics · Computer Science 2022-10-07 Guilherme Siqueira Eduardo , Wouter Caarls

Autonomous AI systems will be entering human society in the near future to provide services and work alongside humans. For those systems to be accepted and trusted, the users should be able to understand the reasoning process of the system,…

Machine Learning · Computer Science 2018-09-18 Rahul Iyer , Yuezhang Li , Huao Li , Michael Lewis , Ramitha Sundar , Katia Sycara

Adaptive methods are popular within the control literature due to the flexibility and forgiveness they offer in the area of modelling. Neural network adaptive control is favorable specifically for the powerful nature of the machine learning…

Systems and Control · Electrical Eng. & Systems 2021-07-23 Nathan Lutes , K. Krishnamurthy , Venkata Sriram Siddhardh Nadendla , S. N. Balakrishnan

Robotic systems are increasingly employed for industrial automation, with contact-rich tasks like polishing requiring dexterity and compliant behaviour. These tasks are difficult to model, making classical control challenging. Deep…

Robotics · Computer Science 2025-06-03 Emma Cramer , Lukas Jäschke , Sebastian Trimpe

Current invasive assistive technologies are designed to infer high-dimensional motor control signals from severely paralyzed patients. However, they face significant challenges, including public acceptance, limited longevity, and barriers…

Robotics · Computer Science 2025-05-19 Ali Rabiee , Sima Ghafoori , MH Farhadi , Robert Beyer , Xiangyu Bai , David J Lin , Sarah Ostadabbas , Reza Abiri

Approximate nearest neighbor (ANN) search is widely used in the retrieval stage of large-scale recommendation systems. In this stage, candidate items are indexed using their learned embedding vectors, and ANN search is executed for each…

Today, there are two major paradigms for vision-based autonomous driving systems: mediated perception approaches that parse an entire scene to make a driving decision, and behavior reflex approaches that directly map an input image to a…

Computer Vision and Pattern Recognition · Computer Science 2015-09-29 Chenyi Chen , Ari Seff , Alain Kornhauser , Jianxiong Xiao

The autonomous control of flippers plays an important role in enhancing the intelligent operation of tracked robots within complex environments. While existing methods mainly rely on hand-crafted control models, in this paper, we introduce…

Robotics · Computer Science 2023-06-21 Hainan Pan , Bailiang Chen , Kaihong Huang , Junkai Ren , Xieyuanli Chen , Huimin Lu

Control theory provides engineers with a multitude of tools to design controllers that manipulate the closed-loop behavior and stability of dynamical systems. These methods rely heavily on insights about the mathematical model governing the…

Systems and Control · Electrical Eng. & Systems 2020-09-24 Simen Theie Havenstrøm , Camilla Sterud , Adil Rasheed , Omer San

Robots are extending their presence in domestic environments every day, being more common to see them carrying out tasks in home scenarios. In the future, robots are expected to increasingly perform more complex tasks and, therefore, be…

Artificial Intelligence · Computer Science 2020-09-22 Ithan Moreira , Javier Rivas , Francisco Cruz , Richard Dazeley , Angel Ayala , Bruno Fernandes