Interplay between social debate and propaganda in an opinion formation model

Artículo

Autoría

GIMENEZ, MARIA CECILIA ; REVELLI, JORGE ALBERTO ; de La Lama, M. S. ; Lopez, J. M. ; Wio, Horacio Sergio

Fecha

2012

Editorial y Lugar de Edición

Elsevier Science

Revista

PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS, vol. 392 (pp. 278-286) Elsevier Science

Resumen Información suministrada por el agente en SIGEVA

We introduce a simple model of opinion dynamics in which a two-state agent modified Sznajd model evolves due to the simultaneous action of stochastic driving and a periodic signal. The stochastic effect mimics a social temperature, so the agents may adopt decisions in support for or against some opinion or position, according to a modified Sznajd rule with a varying probability. The external force represents a simplified picture by which society feels the influence of the external effects of pr... We introduce a simple model of opinion dynamics in which a two-state agent modified Sznajd model evolves due to the simultaneous action of stochastic driving and a periodic signal. The stochastic effect mimics a social temperature, so the agents may adopt decisions in support for or against some opinion or position, according to a modified Sznajd rule with a varying probability. The external force represents a simplified picture by which society feels the influence of the external effects of propaganda. By means of Monte Carlo simulations we have shown the dynamical interplay between the social condition or mood and the external influence, finding a stochastic resonance-like phenomenon when we depict the noise-to-signal ratio as a function of the social temperature. In addition, we have also studied the effects of the system size and the external signal strength on the opinion formation dynamics.

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Palabras Clave

Sznajd modelStochastic resonance

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http://hdl.handle.net/11336/25000