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ThinkMind // ADAPTIVE 2020, The Twelfth International Conference on Adaptive and Self-Adaptive Systems and Applications // View article adaptive_2020_3_60_50022


Towards an Adaptive Lévy Walk Using Artificial Endocrine Systems

Authors:
Hugo Sardinha
Mauro Dragone
Patricia Vargas

Keywords: Artificial Endocrine Systems; Adaptation; Lévy Walk;Biologically Inspired Algorithms; Foraging; Autonomous Agents.

Abstract:
Behavioural adaptation is often observed in foraging animals via coupling periods of localized search and long straightforward motions, a well-known strategy named Lévy Walk. In this paper we propose an adaptive Lévy Walk model to control an autonomous agent. The model is comprised of a Lévy-based controller modulated by an artificial endocrine system optimised through evolutionary techniques. This new approach enables the agent to control the transition between localized search and long relocation when exposed to external stimulus. The model is tested in exploration tasks where environments have resources clustered into patches. Further tests incorporated environments with different patch characteristics, such as patch size or resource distribution within patches. Our model has shown to outperform the benchmark approach in terms of search efficiency, highlighting the benefits of combining a Lévy Walk based controller with a biologically inspired strategy for adaptation.

Pages: 116 to 121

Copyright: Copyright (c) IARIA, 2020

Publication date: April 26, 2020

Published in: conference

ISSN: 2308-4146

ISBN: 978-1-61208-781-8

Location: Nice, France

Dates: from October 25, 2020 to October 29, 2020

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