Different topologies for a herding model of opinion

Abstract

Understanding how opinions spread through a community or how consensus emerges in noisy environments can have a significant impact on our comprehension of social relations among individuals. In this work a model for the dynamics of opinion formation is introduced. The model is based on a nonlinear interaction between opinion vectors of agents plus a stochastic variable to account for the effect of noise in the way the agents communicate. The dynamics presented is able to generate rich dynamical patterns of interacting groups or clusters of agents with the same opinion without a leader or centralized control. Our results show that by increasing the intensity of noise, the system goes from consensus to a disordered state. Depending on the number of competing opinions and the details of the network of interactions, the system displays a first- or a second-order transition. We compare the behavior of different topologies of interactions: one-dimensional chains, and annealed and complex networks.

6 pages, 8 figures

References in corpus (5)

• Statistical mechanics of complex networks
• The structure and function of complex networks
• Hierarchical Organization in Complex Networks
• Dynamics of Majority Rule
• Renormalizing Sznajd model on complex networks taking into account the effects of growth mechanisms

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