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Klaassen, R. and Hendrix, J. and Reidsma, D. and op den Akker, H.J.A. and van Dijk, E.M.A.G. and op den Akker, H. (2013) Elckerlyc goes mobile - Enabling natural interaction in mobile user interfaces. International Journal on Advances in Telecommunications, 6 (1 & 2). pp. 45-56. ISSN 1942-2601
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The fast growth of computational resources and speech technology available on mobile devices makes it possible to entertain users of these devices in having a natural dialogue with service systems. These systems are sometimes perceived as social agents and this can be supported by presenting them on the interface by means of an animated embodied conversational agent. To take the full advantage of the power of embodied conversational agents in service systems it is important to support real-time, online and responsive interaction with the system through the embodied conversational agent. The design of responsive animated conversational agents is a daunting task. Elckerlyc is a model-based platform for the speciﬁcation and animation of synchronised multi-modal responsive animated agents. This paper presents a new light-weight PictureEngine that allows to run this platform in mobile applications. We describe the integration of the PictureEngine in the user interface of two different coaching applications and discuss the ﬁndings from user evaluations. We also conducted a study to evaluate an editing tool for the speciﬁcation of the agent’s communicative behaviour. Twenty one participants had to specify the behaviour of an embodied conversational agent using the PictureEngine. We may conclude that this new lightweight back-end engine for the Elckerlyc platform makes it easier to build embodied conversational interfaces for mobile devices.
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