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Emotion and memory model for social robots: a reinforcement learning based behaviour selection
Swansea Univ, Dept Comp Sci, Kingswood, NSW, Australia.;Western Sydney Univ, MARCS Inst, Kingswood, NSW, Australia..
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology.
UAE Univ, Coll Informat Technol, Al Ain, U Arab Emirates..ORCID iD: 0000-0001-6102-3765
Lahore Univ Management Sci, Dept Comp Sci, Lahore, Pakistan..
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2022 (English)In: Behavior and Information Technology, ISSN 0144-929X, E-ISSN 1362-3001, Vol. 41, no 15, p. 3210-3236Article in journal (Refereed) Published
Abstract [en]

In this paper, we propose a reinforcement learning (RL) mechanism for social robots to select an action based on users' learning performance and social engagement. We applied this behavior selection mechanism to extend the emotion and memory model, which allows a robot to create a memory account of the user's emotional events and adapt its behavior based on the developed memory. We evaluated the model in a vocabulary-learning task at a school during a children's game involving robot interaction to see if the model results in maintaining engagement and improving vocabulary learning across the four different interaction sessions. Generally, we observed positive findings based on child vocabulary learning and sustaining social engagement during all sessions. Compared to the trends of a previous study, we observed a higher level of social engagement across sessions in terms of the duration of the user gaze toward the robot. For vocabulary retention, we saw similar trends in general but also showing high vocabulary retention across some sessions. The findings indicate the benefits of applying RL techniques that have a reward system based on multi-modal user signals or cues.

Place, publisher, year, edition, pages
Informa UK Limited , 2022. Vol. 41, no 15, p. 3210-3236
Keywords [en]
Reinforcement learning, social robots, educational robots, repeated child robot interaction, personalisation, children engagement
National Category
Human Computer Interaction Computer Sciences
Identifiers
URN: urn:nbn:se:uu:diva-497286DOI: 10.1080/0144929X.2021.1977389ISI: 000700532800001OAI: oai:DiVA.org:uu-497286DiVA, id: diva2:1739657
Available from: 2023-02-27 Created: 2023-02-27 Last updated: 2023-02-27Bibliographically approved

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