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Descrição Detalhada da Publicação
Título Revista
Physica A
Ano (publicação definitiva)
2015
Língua
Inglês
País
Países Baixos (Holanda)
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Abstract/Resumo
Consider a network connecting individual agents that are endowed with distinct sentiments or ‘views of the world’. Specifically, assume that each node in the network contains an agent that, at a given period t, can be found in one of five states: sentiment neutrality, exuberant optimism, non-exuberant optimism, exuberant pessimism and non-exuberant pessimism. Local interaction rules, similar to those one encounters in rumor propagation models, make agents change their sentiment as they contact with others. Under a continuous-time framework, the proposed setting delivers a stable fixed-point equilibrium, meaning that the shares of agents in each sentiment category will converge to constant steady-state levels. The inspection of the same structure of analysis in discrete-time indicates that the stability outcome continues to hold when the connectivity degree is equal to 1. However, this result might change as one considers higher-order connectivity. In this last case, persistent endogenous waves of optimism and pessimism emerge under a reasonable parameterization of the model.
Agradecimentos/Acknowledgements
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Palavras-chave
Homogeneous networks,Sentiment-switching,Stability,Endogenous fluctuations,Waves of optimism and pessimism
Classificação Fields of Science and Technology
- Ciências Físicas - Ciências Naturais
Registos de financiamentos
Referência de financiamento | Entidade Financiadora |
---|---|
UID/GES/00315/2013 | Fundação para a Ciência e a Tecnologia |