Collective behaviors of two-component swarms

We present a particle-based simulation study on two-component swarms where there exist two different types of groups in a swarm. Effects of different parameters between the two groups are studied systematically based on Langevin's equation. It is shown that the mass difference can introduce a p...

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Bibliographic Details
Published in:Journal of theoretical biology 2009-12, Vol.261 (3), p.494-500
Main Authors: You, Sang Koo, Kwon, Dae Hyuk, Park, Yong-ik, Kim, Sun Myong, Chung, Myung-Hoon, Kim, Chul Koo
Format: Article
Language:English
Subjects:
Animals
Behavior, Animal
Collective decision making
Collective motion
Ecosystem
Group Processes
Models, Biological
Multi-component swarm
Social Behavior
Spatial Behavior
Swarm dynamics
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Summary:We present a particle-based simulation study on two-component swarms where there exist two different types of groups in a swarm. Effects of different parameters between the two groups are studied systematically based on Langevin's equation. It is shown that the mass difference can introduce a protective behavior for the lighter members of the swarm in a vortex state. When the self-propelling strength is allowed to differ between two groups, it is observed that the swarm becomes spatially segregated and finally separated into two components at a certain critical value. We also investigate effects of different preferences for shelters on their collective decision making. In particular, it is found that the probability of selecting a shelter from the other varies sigmoidally as a function of the number ratio. The model is shown to describe the dynamics of the shelter choosing process of the cockroach–robot mixed group satisfactorily. It raises the possibility that the present model can be applied to the problems of pest control and fishing using robots and decoys.
ISSN:0022-5193
1095-8541
DOI:10.1016/j.jtbi.2009.08.025