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On the evolution of behaviors through embodied imitation

Erbas, Mehmet D.; Bull, Larry; Winfield, Alan F.T.

Authors

Mehmet D. Erbas

Lawrence Bull Larry.Bull@uwe.ac.uk
AHOD Research and Scholarship and Prof

Abstract

This paper describes research in which embodied imitation and behavioural adaptation are investigated in collective robotics. We model social learning in artificial agents with real robots. The robots are able to observe and learn each others’ movement patterns using their on-board sensors only; so that imitation is embodied. We show that the variations that arise from embodiment allow certain behaviours, that are better adapted to the process of imitation, to emerge and evolve during multiple cycles of imitation. As these behaviours are more robust to uncertainties in the real robots’ sensors and actuators, they can be learned by other members of the collective with higher fidelity. Three different types of learned-behaviour memory have been experimentally tested to investigate the effect of memory capacity on the evolution of movement patterns, and results show that as the movement patterns evolve through multiple cycles of imitation, selection and variation, the robots are able to, in a sense, agree on the structure of the behaviours that are imitated.

Journal Article Type Article
Publication Date May 1, 2015
Journal Artificial Life
Print ISSN 1064-5462
Publisher Massachusetts Institute of Technology Press (MIT Press)
Peer Reviewed Peer Reviewed
Volume 21
Issue 2
Pages 141-165
Institution Citation Erbas, M. D., Bull, L., & Winfield, A. F. (2015). On the evolution of behaviors through embodied imitation. Artificial Life, 21(2), 141-165. https://doi.org/10.1162/ARTL_a_00164
DOI https://doi.org/10.1162/ARTL_a_00164
Keywords social learning, behavioural adaptation, embodied imitation, multi-robot systems, swarm intelligence
Publisher URL http://dx.doi.org/10.1162/ARTL_a_00164

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