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Asymmetric Contrarians in Opinion Dynamics
Asymmetry in contrarian behavior is investigated within the Galam model of opinion dynamics using update groups of size 3 with two competing opinions A and B. Denoting x and y the respective proportions of A and B contrarians, four schemes of implementations are studied. The first scheme activates c...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7516446/ https://www.ncbi.nlm.nih.gov/pubmed/33285800 http://dx.doi.org/10.3390/e22010025 |
_version_ | 1783587003112095744 |
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author | Galam, Serge Cheon, Taksu |
author_facet | Galam, Serge Cheon, Taksu |
author_sort | Galam, Serge |
collection | PubMed |
description | Asymmetry in contrarian behavior is investigated within the Galam model of opinion dynamics using update groups of size 3 with two competing opinions A and B. Denoting x and y the respective proportions of A and B contrarians, four schemes of implementations are studied. The first scheme activates contrarians after each series of updates with probabilities x and y for agents holding respectively opinion A and B. Second scheme activates contrarians within the update groups only against global majority with probability x when A is the majority and y when B is the majority. The third scheme considers in-group contrarians acting prior to the local majority update against both local majority and minority opinions. The last scheme activates in-group contrarians prior to the local majority update but only against the local majority. The main result is the loss of the fifty–fifty attractor produced by symmetric contrarians. Producing a bit less contrarians on its own side than the other side becomes the key to win a public debate, which in turn can guarantee an election victory. The associated phase diagram of opinion dynamics is found to exhibit a rich variety of counterintuitive results. |
format | Online Article Text |
id | pubmed-7516446 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75164462020-11-09 Asymmetric Contrarians in Opinion Dynamics Galam, Serge Cheon, Taksu Entropy (Basel) Article Asymmetry in contrarian behavior is investigated within the Galam model of opinion dynamics using update groups of size 3 with two competing opinions A and B. Denoting x and y the respective proportions of A and B contrarians, four schemes of implementations are studied. The first scheme activates contrarians after each series of updates with probabilities x and y for agents holding respectively opinion A and B. Second scheme activates contrarians within the update groups only against global majority with probability x when A is the majority and y when B is the majority. The third scheme considers in-group contrarians acting prior to the local majority update against both local majority and minority opinions. The last scheme activates in-group contrarians prior to the local majority update but only against the local majority. The main result is the loss of the fifty–fifty attractor produced by symmetric contrarians. Producing a bit less contrarians on its own side than the other side becomes the key to win a public debate, which in turn can guarantee an election victory. The associated phase diagram of opinion dynamics is found to exhibit a rich variety of counterintuitive results. MDPI 2019-12-24 /pmc/articles/PMC7516446/ /pubmed/33285800 http://dx.doi.org/10.3390/e22010025 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Galam, Serge Cheon, Taksu Asymmetric Contrarians in Opinion Dynamics |
title | Asymmetric Contrarians in Opinion Dynamics |
title_full | Asymmetric Contrarians in Opinion Dynamics |
title_fullStr | Asymmetric Contrarians in Opinion Dynamics |
title_full_unstemmed | Asymmetric Contrarians in Opinion Dynamics |
title_short | Asymmetric Contrarians in Opinion Dynamics |
title_sort | asymmetric contrarians in opinion dynamics |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7516446/ https://www.ncbi.nlm.nih.gov/pubmed/33285800 http://dx.doi.org/10.3390/e22010025 |
work_keys_str_mv | AT galamserge asymmetriccontrariansinopiniondynamics AT cheontaksu asymmetriccontrariansinopiniondynamics |