Opinion dynamics in a three-choice system
统计力学
2009-11-11 v2 物理与社会
摘要
We generalize Galam's model of opinion spreading by introducing three competing choices. At each update, the population is randomly divided in groups of three agents, whose members adopt the opinion of the local majority. In the case of a tie, the local group adopts opinion A, B or C with probabilities alpha, beta and (1-alpha-beta) respectively. We derive the associated phase diagrams and dynamics by both analytical means and simulations. Polarization is always reached within very short time scales. We point out situations in which an initially very small minority opinion can invade the whole system.
引用
@article{arxiv.cond-mat/0504254,
title = {Opinion dynamics in a three-choice system},
author = {S. Gekle and S. Galam and L. Peliti},
journal= {arXiv preprint arXiv:cond-mat/0504254},
year = {2009}
}
备注
To appear in European Physical Journal B. A few errors corrected, some figures redrawn from the first version