Backchannel Strategies for Artificial Listeners


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Poppe, Ronald and Truong, Khiet P. and Reidsma, Dennis and Heylen, Dirk (2010) Backchannel Strategies for Artificial Listeners. In: International Conference on Intelligent Virtual Agents, IVA 2010, September 20-22, 2010, Philadelphia, PA, USA.

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Abstract:We evaluate multimodal rule-based strategies for backchannel (BC) generation in face-to-face conversations. Such strategies can be used by artificial listeners to determine when to produce a BC in dialogs with human speakers. In this research, we consider features from the speaker’s speech and gaze. We used six rule-based strategies to determine the placement of BCs. The BCs were performed by an intelligent virtual agent using nods and vocalizations. In a user perception experiment, participants were shown video fragments of a human speaker together with an artificial listener who produced BC behavior according to one of the strategies. Participants were asked to rate how likely they thought the BC behavior had been performed by a human listener. We found that the number, timing and type of BC had a significant effect on how human-like the BC behavior was perceived.
Item Type:Conference or Workshop Item
Copyright:© 2010 Springer
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/73095
Official URL:http://dx.doi.org/10.1007/978-3-642-15892-6_16
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