La complexité d’un modèle simplifié d’interactions sociales : le modèle Léviathan

Guillaume Deffuant, Sylvie Huet, Timoteo Carletti

Research output: Contribution in Book/Catalog/Report/Conference proceedingChapter (peer-reviewed)

Abstract

We propose an opinion dynamics model that combines processes
of vanity and opinion propagation. The interactions take place between
randomly chosen pairs. During an interaction, the agents propagate their
opinions about themselves and about other people they know. Moreover,
each individual is subject to vanity: if her interlocutor seems to value her
highly, then she increases her opinion about this interlocutor. On the contrary
she tends to decrease her opinion about those who seem to undervalue
her. The combination of these dynamics with the hypothesis that the opinion
propagation is more efficient when coming from highly valued individuals,
leads to different patterns when varying the parameters. For instance, for
some parameters the positive opinion links between individuals generate
a small world network. In one of the patterns, absolute dominance of one
agent alternates with a state of generalised distrust, where all agents have
a very low opinion of all the others (including themselves). We provide some
explanations of the mechanisms behind these emergent behaviors and finally
propose a discussion about their interest.
Original languageFrench
Title of host publicationModéliser & simuler. Epistémologies et pratiques de la modélisation et de la simulation
PublisherÉditions Matériologiques
ISBN (Electronic) 978-2-919694-19-8
Publication statusPublished - 19 Apr 2013

Publication series

NameSciences & Philosopie
PublisherÉditions Matériologiques

Keywords

  • reputation dynamics
  • social dynamics
  • opinion dynamics
  • vanity
  • Leviathan

Cite this

Deffuant, G., Huet, S., & Carletti, T. (2013). La complexité d’un modèle simplifié d’interactions sociales : le modèle Léviathan. In Modéliser & simuler. Epistémologies et pratiques de la modélisation et de la simulation (Sciences & Philosopie). Éditions Matériologiques.
Deffuant, Guillaume ; Huet, Sylvie ; Carletti, Timoteo. / La complexité d’un modèle simplifié d’interactions sociales : le modèle Léviathan. Modéliser & simuler. Epistémologies et pratiques de la modélisation et de la simulation. Éditions Matériologiques, 2013. (Sciences & Philosopie).
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abstract = "We propose an opinion dynamics model that combines processesof vanity and opinion propagation. The interactions take place betweenrandomly chosen pairs. During an interaction, the agents propagate theiropinions about themselves and about other people they know. Moreover,each individual is subject to vanity: if her interlocutor seems to value herhighly, then she increases her opinion about this interlocutor. On the contraryshe tends to decrease her opinion about those who seem to undervalueher. The combination of these dynamics with the hypothesis that the opinionpropagation is more efficient when coming from highly valued individuals,leads to different patterns when varying the parameters. For instance, forsome parameters the positive opinion links between individuals generatea small world network. In one of the patterns, absolute dominance of oneagent alternates with a state of generalised distrust, where all agents havea very low opinion of all the others (including themselves). We provide someexplanations of the mechanisms behind these emergent behaviors and finallypropose a discussion about their interest.",
keywords = "reputation dynamics, social dynamics, opinion dynamics, vanity, Leviathan",
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publisher = "{\'E}ditions Mat{\'e}riologiques",
booktitle = "Mod{\'e}liser & simuler. Epist{\'e}mologies et pratiques de la mod{\'e}lisation et de la simulation",

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Deffuant, G, Huet, S & Carletti, T 2013, La complexité d’un modèle simplifié d’interactions sociales : le modèle Léviathan. in Modéliser & simuler. Epistémologies et pratiques de la modélisation et de la simulation. Sciences & Philosopie, Éditions Matériologiques.

La complexité d’un modèle simplifié d’interactions sociales : le modèle Léviathan. / Deffuant, Guillaume; Huet, Sylvie; Carletti, Timoteo.

Modéliser & simuler. Epistémologies et pratiques de la modélisation et de la simulation. Éditions Matériologiques, 2013. (Sciences & Philosopie).

Research output: Contribution in Book/Catalog/Report/Conference proceedingChapter (peer-reviewed)

TY - CHAP

T1 - La complexité d’un modèle simplifié d’interactions sociales : le modèle Léviathan

AU - Deffuant, Guillaume

AU - Huet, Sylvie

AU - Carletti, Timoteo

PY - 2013/4/19

Y1 - 2013/4/19

N2 - We propose an opinion dynamics model that combines processesof vanity and opinion propagation. The interactions take place betweenrandomly chosen pairs. During an interaction, the agents propagate theiropinions about themselves and about other people they know. Moreover,each individual is subject to vanity: if her interlocutor seems to value herhighly, then she increases her opinion about this interlocutor. On the contraryshe tends to decrease her opinion about those who seem to undervalueher. The combination of these dynamics with the hypothesis that the opinionpropagation is more efficient when coming from highly valued individuals,leads to different patterns when varying the parameters. For instance, forsome parameters the positive opinion links between individuals generatea small world network. In one of the patterns, absolute dominance of oneagent alternates with a state of generalised distrust, where all agents havea very low opinion of all the others (including themselves). We provide someexplanations of the mechanisms behind these emergent behaviors and finallypropose a discussion about their interest.

AB - We propose an opinion dynamics model that combines processesof vanity and opinion propagation. The interactions take place betweenrandomly chosen pairs. During an interaction, the agents propagate theiropinions about themselves and about other people they know. Moreover,each individual is subject to vanity: if her interlocutor seems to value herhighly, then she increases her opinion about this interlocutor. On the contraryshe tends to decrease her opinion about those who seem to undervalueher. The combination of these dynamics with the hypothesis that the opinionpropagation is more efficient when coming from highly valued individuals,leads to different patterns when varying the parameters. For instance, forsome parameters the positive opinion links between individuals generatea small world network. In one of the patterns, absolute dominance of oneagent alternates with a state of generalised distrust, where all agents havea very low opinion of all the others (including themselves). We provide someexplanations of the mechanisms behind these emergent behaviors and finallypropose a discussion about their interest.

KW - reputation dynamics

KW - social dynamics

KW - opinion dynamics

KW - vanity

KW - Leviathan

M3 - Chapitre (revu par des pairs)

T3 - Sciences & Philosopie

BT - Modéliser & simuler. Epistémologies et pratiques de la modélisation et de la simulation

PB - Éditions Matériologiques

ER -

Deffuant G, Huet S, Carletti T. La complexité d’un modèle simplifié d’interactions sociales : le modèle Léviathan. In Modéliser & simuler. Epistémologies et pratiques de la modélisation et de la simulation. Éditions Matériologiques. 2013. (Sciences & Philosopie).