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Conversational Dialogue Systems for the Next Decade pp 3–13Cite as

A Character Expression Model Affecting Spoken Dialogue Behaviors

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Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 704))

Abstract

We address character (personality) expression for a spoken dialogue system in order to accommodate it in particular dialogue tasks and social roles. While conventional studies investigated controlling the linguistic expressions, we focus on spoken dialogue behaviors to express systems’ characters. Specifically, we investigate spoken dialogue behaviors such as utterance amount, backchannel frequency, filler frequency, and switching pause length in order to express three character traits: extroversion, emotional instability, and politeness. In this study, we evaluate this model with a natural spoken dialogue corpus. The results reveal that this model expresses reasonable characters according to the dialogue tasks and the participant roles. Furthermore, it is also shown that this model is able to express different characters among participants given the same role. A subjective experiment demonstrated that subjects could perceive the characters expressed by the model.

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Acknowledgment

This work was supported by JST ERATO Ishiguro Symbiotic Human-Robot Interaction program (Grant number JPMJER1401) and Grant-in-Aid for Scientific Research on Innovative Areas “Communicative intelligent systems towards a human-machine symbiotic society” (Grant number JP19H05691).

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Authors and Affiliations

  1. Graduate School of Informatics, Kyoto University, Kyoto, Japan

    Kenta Yamamoto, Koji Inoue, Shizuka Nakamura, Katsuya Takanashi & Tatsuya Kawahara

Authors
  1. Kenta Yamamoto
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  2. Koji Inoue
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  3. Shizuka Nakamura
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  4. Katsuya Takanashi
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  5. Tatsuya Kawahara
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Corresponding author

Correspondence to Kenta Yamamoto .

Editor information

Editors and Affiliations

  1. Speech Technology Group - Information Processing and Telecommunications Center (IPTC), Universidad Politécnica de Madrid, Madrid, Spain

    Luis Fernando D'Haro

  2. Department of Languages and Computer Systems, Universidad de Granada, CITIC-UGR, Granada, Spain

    Zoraida Callejas

  3. Information Science, Nara Institute of Science and Technology, Ikoma, Japan

    Satoshi Nakamura

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Yamamoto, K., Inoue, K., Nakamura, S., Takanashi, K., Kawahara, T. (2021). A Character Expression Model Affecting Spoken Dialogue Behaviors. In: D'Haro, L.F., Callejas, Z., Nakamura, S. (eds) Conversational Dialogue Systems for the Next Decade. Lecture Notes in Electrical Engineering, vol 704. Springer, Singapore. https://doi.org/10.1007/978-981-15-8395-7_1

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  • DOI: https://doi.org/10.1007/978-981-15-8395-7_1

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-8394-0

  • Online ISBN: 978-981-15-8395-7

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