Neural networks as mechanisms to regulate division of labor.

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Ressource 1Télécharger: BIB_B1E6BA821382.P001.pdf (593.49 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_B1E6BA821382
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Neural networks as mechanisms to regulate division of labor.
Périodique
American Naturalist
Auteur(s)
Lichocki P., Tarapore D., Keller L., Floreano D.
ISSN
1537-5323 (Electronic)
ISSN-L
0003-0147
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
179
Numéro
3
Pages
391-400
Langue
anglais
Résumé
Abstract In social insects, workers perform a multitude of tasks, such as foraging, nest construction, and brood rearing, without central control of how work is allocated among individuals. It has been suggested that workers choose a task by responding to stimuli gathered from the environment. Response-threshold models assume that individuals in a colony vary in the stimulus intensity (response threshold) at which they begin to perform the corresponding task. Here we highlight the limitations of these models with respect to colony performance in task allocation. First, we show with analysis and quantitative simulations that the deterministic response-threshold model constrains the workers' behavioral flexibility under some stimulus conditions. Next, we show that the probabilistic response-threshold model fails to explain precise colony responses to varying stimuli. Both of these limitations would be detrimental to colony performance when dynamic and precise task allocation is needed. To address these problems, we propose extensions of the response-threshold model by adding variables that weigh stimuli. We test the extended response-threshold model in a foraging scenario and show in simulations that it results in an efficient task allocation. Finally, we show that response-threshold models can be formulated as artificial neural networks, which consequently provide a comprehensive framework for modeling task allocation in social insects.
Mots-clé
task allocation, social insects, division of labor, response thresholds, neural networks
Pubmed
Web of science
Création de la notice
07/11/2011 20:23
Dernière modification de la notice
20/08/2019 15:20
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