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- research-articleOctober 2024
Field Trial of a Queue-Managing Security Guard Robot
ACM Transactions on Human-Robot Interaction (THRI), Volume 13, Issue 4Article No.: 57, Pages 1–48https://doi.org/10.1145/3680292We developed a security guard robot that is specifically designed to manage queues of people and conducted a field trial at an actual public event to assess its effectiveness. However, the acceptance of robot instructions or admonishments poses challenges ...
- research-articleJuly 2024
Compensation architecture design utilizing residual resource to mitigate impacts of nonidealities in RRAM-based computing-in-memory chips
AbstractResistive random access memory (RRAM) is a promising technology for energy-efficient in-memory computing. However, due to technology limits, RRAM device faces a series of reliability issues. Deep neural network (DNN) computing based on RRAM ...
- research-articleMarch 2024
Field Trial of an Autonomous Shopworker Robot that Aims to Provide Friendly Encouragement and Exert Social Pressure
HRI '24: Proceedings of the 2024 ACM/IEEE International Conference on Human-Robot InteractionPages 194–202https://doi.org/10.1145/3610977.3635007We developed an autonomous hatshop robot for encouraging customers to try on hats by providing comments that appropriately fit their actions, and in such a way also indirectly exerting social pressure. To enable it to offer such a service smoothly in a ...
- research-articleMarch 2024
Can't You See I Am Bothered? Human-inspired Suggestive Avoidance for Robots
HRI '24: Proceedings of the 2024 ACM/IEEE International Conference on Human-Robot InteractionPages 184–193https://doi.org/10.1145/3610977.3634954We studied how robots could stop people from repeatedly obstructing them by using reactions that people commonly use. From 35 hours of observation of people in a shopping mall, we identified one commonly used reaction, which we named suggestive ...
- research-articleMarch 2024
I Need to Pass Through! Understandable Robot Behavior for Passing Interaction in Narrow Environment
HRI '24: Proceedings of the 2024 ACM/IEEE International Conference on Human-Robot InteractionPages 213–221https://doi.org/10.1145/3610977.3634951We developed a motion control algorithm for a social mobile robot to intuitively convey its intent via social cues to pass through aisles and avoid misunderstanding in passing interactions with people, which frequently occur when a robot navigates in ...
- research-articleFebruary 2022
Stop Ignoring Me! On Fighting the Trivialization of Social Robots in Public Spaces
ACM Transactions on Human-Robot Interaction (THRI), Volume 11, Issue 2Article No.: 11, Pages 1–23https://doi.org/10.1145/3488241Service and social robot in public scenarios will face various tasks in future applications, such as guiding people or admonishing them to provide assistance or convey social norms. Robots in public spaces might also incorporate roles of authority figures ...
- research-articleAugust 2021
Relative Camera Pose Estimation using Synthetic Data with Domain Adaptation via Cycle-Consistent Adversarial Networks
Journal of Intelligent and Robotic Systems (JIRS), Volume 102, Issue 4https://doi.org/10.1007/s10846-021-01439-6AbstractLearning-based visual localization has become prospective over the past decades. Since ground truth pose labels are difficult to obtain, recent methods try to learn pose estimation networks using pixel-perfect synthetic data. However, this also ...
- research-articleMarch 2021
Human-inspired Motion Planning for Omni-directional Social Robots
HRI '21: Proceedings of the 2021 ACM/IEEE International Conference on Human-Robot InteractionPages 34–42https://doi.org/10.1145/3434073.3444679Omni-directional robots have gradually been popular for social interactions with people in human environments. The characteristics of omni-directional bases allow the robots to change their body orientation freely while moving straight. However, human ...
- ArticleDecember 2019
Non-linguistic Features for Cyberbullying Detection on a Social Media Platform Using Machine Learning
AbstractCyberbullying on social media platforms has been a severe problem with serious negative consequences. Therefore, a number of researches on automatic detection of cyberbullying using machine learning techniques have been conducted in recent years. ...
- research-articleMarch 2019
Reliability Perspective on Neuromorphic Computing Based on Analog RRAM
- Huaqiang Wu,
- Meiran Zhao,
- Yuyi Liu,
- Peng Yao,
- Yue Xi,
- Xinyi Li,
- Wei Wu,
- Qingtian Zhang,
- Jianshi Tang,
- Bin Gao,
- He Qian
2019 IEEE International Reliability Physics Symposium (IRPS)Pages 1–4https://doi.org/10.1109/IRPS.2019.8720609A perspective is provided to compare the reliability requirements of Resistive Random Access Memory (RRAM) for digital memory application and neuromorphic computing application. Retention and endurance are considered as the two key metrics to evaluate the ...
- research-articleAugust 2018
A Distributed Control Approach to Formation Balancing and Maneuvering of Multiple Multirotor UAVs
- Yuyi Liu,
- Jan Maximilian Montenbruck,
- Daniel Zelazo,
- Marcin Odelga,
- Sujit Rajappa,
- Heinrich H. Bulthoff,
- Frank Allgower,
- Andreas Zell
IEEE Transactions on Robotics (TOR), Volume 34, Issue 4Pages 870–882https://doi.org/10.1109/TRO.2018.2853606In this paper, we propose and experimentally verify a distributed formation control algorithm for a group of multirotor unmanned aerial vehicles (UAVs). The algorithm brings the whole group of UAVs simultaneously to a prescribed submanifold that ...
- research-articleDecember 2017
Robust nonlinear control approach to nontrivial maneuvers and obstacle avoidance for quadrotor UAV under disturbances
- Yuyi Liu,
- Sujit Rajappa,
- Jan Maximilian Montenbruck,
- Paolo Stegagno,
- Heinrich Blthoff,
- Frank Allgwer,
- Andreas Zell
Robotics and Autonomous Systems (ROAS), Volume 98, Issue CPages 317–332https://doi.org/10.1016/j.robot.2017.08.011In this paper, we present an onboard robust nonlinear control approach for quadrotor Unmanned Aerial Vehicles (UAVs) in the environments with disturbances and obstacles. The complete framework consists of an attitude controller based on the solution of ...
- posterSeptember 2016
Visual Analysis of TED Talk Topic Trends
VINCI '16: Proceedings of the 9th International Symposium on Visual Information Communication and InteractionPages 150–151https://doi.org/10.1145/2968220.2972225TED Talks are short, powerful talks given by some of the world's brightest minds - scientists, philanthropists, businessmen, artists, and many others. Funded by members and advertising, these talks are free to access by the public on the TED website and ...
- research-articleSeptember 2015
A robust nonlinear controller for nontrivial quadrotor maneuvers: Approach and verification
2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)Pages 5410–5416https://doi.org/10.1109/IROS.2015.7354142This paper presents a nonlinear control approach for quadrotor Micro Aerial Vehicles (MAVs), which combines a backstepping-like regulator based on the solution of a certain class of global output regulation problems for the rigid body equations on SO(3), ...