A Comparative Study on Decision Making Mechanisms in a Simulated Swarm of Robots

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A swarms of robots can collectively select an option among the available alternatives offered by the environment through a process known as collective decision-making. This process is characterised by the fact that once a decision is made by the group it can not be attributed to any of its group members. In the large majority of the swarm robotics literature, only a few types of mechanisms have been used to allow the robots of a swarm to make collective decisions. Namely, the mechanisms referred to as the Voter and the Majority model or variations of these two models. Recently, an alternative solution has been proposed which is based on the use of dynamical neural networks as individual decision-making mechanisms. This alternative solution proved effective in a perceptual discrimination task. In this paper, we carry out extensive comparative tests that quantitatively evaluate, on a perceptual discrimination task, the Voter model and the dynamic neural network model on a variety of operating conditions and for swarms that differ in their size. The results of our study clearly indicate that the performances of a swarm employing dynamical neural networks as the decision-making mechanism are more robust, more adaptable to a dynamic environment, and more scalable to larger swarm size than the performances of a swarm employing the Voter model as the decision-making mechanism. We account for these performance differences with a analysis of the two models.
langue originaleAnglais
titreIEEE World Congress on Computational Intelligence (WCCI)
Nombre de pages8
Etat de la publicationPublié - 2022

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