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Opinion dynamics in a three-choice system

  • S. GekleEmail author
  • L. Peliti
  • S. Galam
Interdisciplinary Physics

Abstract.

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 α, β and (1-α-β) 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.

Keywords

Spectroscopy Neural Network State Physics Phase Diagram Complex System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Authors and Affiliations

  1. 1.Centre de Recherche en Épistémologie Appliquée, CREA-École PolytechniqueParisFrance
  2. 2.Dipartimento di Scienze Fisiche and Unità INFM, Università “Federico II”NapoliItaly

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