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Hagen Lehmann

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Publications by Hagen Lehmann (bibliography)

2012

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Broz, Frank, Lehmann, Hagen, Nakano, Yukiko and Mutlu, Bilge (2012): Gaze in HRI: from modeling to communication. In: Proceedings of the 7th International Conference on Human-Robot Interaction 2012. pp. 491-492.

“The purpose of this half-day workshop is to explore the role of social gaze in human-robot interaction, both how to measure social gaze behavior by humans and how to implement it in robots that interact with them. Gaze directed at an interaction partner has become a subject of increased attention in human-robot interaction research. While traditional robotics research has focused work on robot gaze solely on the identification and manipulation of objects, researchers in HRI have come to recognize that gaze is a social behavior in addition to a way of sensing the world. This workshop will approach the problem of understanding the role of social gaze in human-robot interaction from the dual perspectives of investigating human-human gaze for design principles to apply to robots and of experimentally evaluating human-robot gaze interaction in order to assess how humans engage in gaze behavior with robots. Computational modeling of human gaze behavior is useful for human-robot interaction in a number of different ways. Such models can enable a robot to perceive information about the state of the human in the interaction and adjust its behavior accordingly. Additionally, more human-like gaze behavior may make a person more comfortable and engaged during an interaction. It is known the gaze pattern of a social interaction partner has a huge impact on one's own interaction behavior. Therefore, the experimental verification of robot gaze policies is extremely important. Appropriate gaze behavior is critical for establishing joint attention, which enables humans to engage in collaborative activities and gives structure to social interactions. There is still much to be learned about which properties of human-human gaze should be transferred to human-robot gaze and how to model human-robot gaze for autonomous robots. The goal of the workshop is to exchange ideas and develop and improve methodologies for this growing area of research.”

2011

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Lehmann, Hagen, Iacono, Iolanda, Robins, Ben, Marti, Patrizia and Dautenhahn, Kerstin (2011): 'Make it move': playing cause and effect games with a robot companion for children with cognitive disabilities. In: Proceedings of the 2011 Annual European Conference on Cognitive Ergonomics 2011. pp. 105-112.

“Play is one of the most important activities in child development. Children with special needs are often excluded from play activities due to the nature of their impairments. This paper describes the use of two types of robots with very different configurations, one humanoid robot (KASPAR) and one mobile robotic platform (IROMEC), in a six month long-term study with children with different levels of cognitive and social disabilities. In this study we tested the effectiveness of KASPAR and IROMEC. IROMEC was designed for children with special needs in order to encourage them to be engaged in play activities. KASPAR was developed to facilitate social interaction, including applications designed to help children with autism. We examined whether these two robots can support the achievement of fundamental therapeutic and educational objectives for the cognitive and social development of these children. We performed similar play scenarios with both robots and monitored their effects on the behaviour of the children. In this paper we focus on the cause and effect game called Make it move. A preliminary analysis of the data shows very encouraging results. The interaction with the robots seemed to have in general positive influence on the development of the children's social skills. The level of success achieving the different objectives varied from child to child depending on the level and nature of their disability.”

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