A modified Vicsek model for self-propelled agents with exponential neighbor weight and restricted visual field

Xin-Guang Wang, Chen-Ping Zhu, Chuan-Yang Yin, Dong-Sheng Hu and Zhi-Jun Yan

Physica A: Statistical Mechanics and its Applications, 2013, vol. 392, issue 10, 2398-2405

Abstract: Large flocks of wild beings can have coordinated motion with neither leading center nor global information. The Vicsek model and its new versions explained such collective behavior of self-propelled agents with the mechanism of un-weighted influence of neighbors and global visual field (GVF), which may not always fit the reality. In the present work, we take both exponential (λ) neighbor weight (ENW) and restricted visual field (RVF) into account, and investigate the combinatory effect of them. Based on this mechanism, in most cases of our simulation, stationary direction consensus Va exhibits a maximum or decreases with VF, and a minimum convergence time Tmin appears in RVF, which demonstrates that GVF is not necessary for coordinated motion, while RVF matched ENW would be reasonable. Moreover, we simulated various recipes for optimizing Va and T in unfavorable cases, and found critical points separating inverse λ-dependent variations of T. The present work may be useful in improving the efficiency of direction consensus of large flocks of artificial individuals besides the understanding of biological collective motion in nature.

Keywords: Vicsek model; Restricted visual field; Exponential neighbor weight; Direction consensus; Convergence time (search for similar items in EconPapers)
Date: 2013
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:392:y:2013:i:10:p:2398-2405

DOI: 10.1016/j.physa.2013.01.022

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