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Communication dans un congrès

Bounded confidence with rejection: clusters or scattered opinions ?

Abstract : Huet and Deffuant (2007) propose a new opinion dynamics model based on the bounded confidence principles, with a rejection mechanism. We study new simulations of the agent-based model for a population of 10000 individuals. We generally observe fewer clusters than the classical bounded confidence model, and below a threshold of the uncertainty, no cluster appear: all opinions remain scattered. We build an aggregated model of this agent-based model (ABM), in the limit case of an infinite population, in order to better understand this dynamical behaviour. When adding a small perturbation in the initial distribution, the aggregated model and ABM yield similar numbers of clusters for the same parameters. Below a critical value of uncertainty, the aggregated model forms no cluster and the distribution remains uniform. The critical value is higher for the aggregated model than for the ABM, indicating a finite size effect that we discuss.
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Communication dans un congrès
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https://hal.inrae.fr/hal-02590824
Déposant : Migration Irstea Publications <>
Soumis le : vendredi 15 mai 2020 - 14:34:58
Dernière modification le : mercredi 14 octobre 2020 - 03:56:16

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  • HAL Id : hal-02590824, version 1
  • IRSTEA : PUB00024581

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Citation

S. Huet, Guillaume Deffuant. Bounded confidence with rejection: clusters or scattered opinions ?. 5th Conference of the European Social Simulation Association ESSA 2008, Sep 2008, Brescia, Italy. pp.12. ⟨hal-02590824⟩

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