Alle Publikationen
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2012
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(2012): Teleoperation of Multiple Social Robots. In: IEEE Transactions on Systems, Man, and Cybernetics - Part A: Systems and Humans 42 (3), S. 530-544. DOI: 10.1109/TSMCA.2011.2164243
Abstract: Teleoperation of multiple robots by a single operator has been studied extensively for applications such as search and navigation; however, this concept has never been applied to the field of social, conversational robots. In this paper, we explore the unique challenges posed by the remote operation of multiple social robots, where an operator must perform auditory multitasking to assist multiple interactions at once. It describes the general system requirements in four areas: social human-robot interaction (HRI) design, autonomy design, multirobot coordination, and teleoperation interface design. Based on this design framework, we have developed a system in which a single operator can simultaneously control four robots in conversational interactions with users. Key elements of our implementation include a control architecture enabling the scripting of conditional behavior flows for social interaction, a graphical interface enabling an operator to control one robot at a time while monitoring several others in the background, and a technique called "proactive timing control," which is an automated method for smoothly interleaving the demands of multiple robots for the operator's attention. We also present metrics for describing and predicting robot performance, and we show experimental results demonstrating the effectiveness of our system through simulations and a laboratory experiment based on real-world interactions.
Keywords: Adjustable autonomy, communication robots, human-robot interaction (HRI), Mensch-Technik-Relationen (MTR), multiple robots, networked robots, Realtechnik, single-operator multiple-robot systems, social robots, Sozial Intelligente Agenten, Soziale Robotik, supervisory control, Technik, teleoperation of social robots -
(2012): What is the appropriate speech rate for a communication robot?. In: Interaction Studies: Social Behaviour and Communication in Biological and Artificial Systems 13 (3), S. 408-435. DOI: 10.1075/is.13.3.05shi
DOI: https://doi.org/10.1075/is.13.3.05shi Abstract: This study investigates the influence of a robot’s speech rate. In human communication, slow speech is considered boring, speech at normal speed is perceived as credible, and fast speech is perceived as competent. To seek the appropriate speech rate for robots, we test whether these tendencies are replicated in human-robot interaction by conducting an experiment with four rates of speech: fast, normal, moderately slow, and slow. Our experimental results reveal a rather surprising trend. Participants prefer normal and moderately slow speech to fast speech. A robot that provides normal or moderately slow speech is perceived as competent. We further study how context affects this perception. In a situation where the robot and participants talk while walking, we found that slow speech was the most comprehensible. In addition, slow speech is subjectively perceived as good as moderately slow and normal speech. (PsycINFO Database Record (c) 2019 APA, all rights reserved)
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