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An opinion diffusion model with deliberation

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opinion_decision.pdf (623.3Kb)
Date
2019
Dewey
Recherche opérationnelle
Sujet
Opinion diffusion; abstract argumentation; agent-based modeling; deliberation
Conference name
20th International Workshop on Multi-Agent-Based Simulation (MABS 2019)
Conference date
05-2019
Conference city
Montreal
Conference country
Canada
Book title
Proceedings of the 20th International Workshop on Multi-Agent-Based Simulation (MABS 2019)
Author
Sichman, Jaime Simão; Paolucci, Mario; Verhagen, Harko
Publisher
Universidade Sao Paulo
Publisher city
Sao Paulo
Year
2019
URI
https://basepub.dauphine.fr/handle/123456789/20044
Collections
  • LAMSADE : Publications
Metadata
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Author
Butler, George
989 Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Pigozzi, Gabriella
989 Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Rouchier, Juliette
989 Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Type
Communication / Conférence
Abstract (EN)
In this article, we propose an agent-based model of opinion diffusion and voting where agents influence each other through deliberation. The model is inspired from social modeling as it describes a process of collective decision-making that iterates on a series of dyadic inter-individual influence steps and collective deliberation procedures. We study the evolution of opinions and the correctness of decisions taken within a group. We also aim at founding a comprehensive model to describe collective decision-making as a combination of two different paradigms: argumentation theory and agent-based influence models, which are not obvious to link since a formal translation and interpretation of their relationship is required. From a sequence of controlled simulations, we find that deliberation, modeled as an exchange of arguments, reduces the variance of opinions and the number of extremists, as long as not too much deliberation takes place during the decision-making process. Insofar as we define “correct” decisions as those whose supporting arguments survive deliberation, promoting deliberative discussion favors convergence towards correct decisions.

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