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Interacting nonlinear reinforced stochastic processes: Synchronization or non-synchronization

Published online by Cambridge University Press:  01 August 2022

Irene Crimaldi*
Affiliation:
IMT School for Advanced Studies Lucca
Pierre-Yves Louis*
Affiliation:
PAM UMR 02.102 and Institut de Mathématiques de Bourgogne
Ida G. Minelli*
Affiliation:
Università degli Studi dell’Aquila
*
*Postal address: Piazza San Ponziano 6, 55100 Lucca, Italy. Email address: irene.crimaldi@imtlucca.it
**Postal address: Université Bourgogne Franche-Comté, Institut Agro Dijon, 1 esplanade Erasme, 21000, Dijon, France.
****Postal address: Dipartimento di Ingegneria e Scienze dell’Informazione e Matematica, Università degli Studi dell’Aquila, Via Vetoio (Coppito 1), 67100 L’Aquila, Italy. Email address: idagermana.minelli@univaq.it

Abstract

The rich-get-richer rule reinforces actions that have been frequently chosen in the past. What happens to the evolution of individuals’ inclinations to choose an action when agents interact? Interaction tends to homogenize, while each individual dynamics tends to reinforce its own position. Interacting stochastic systems of reinforced processes have recently been considered in many papers, in which the asymptotic behavior is proven to exhibit almost sure synchronization. In this paper we consider models where, even if interaction among agents is present, absence of synchronization may happen because of the choice of an individual nonlinear reinforcement. We show how these systems can naturally be considered as models for coordination games or technological or opinion dynamics.

Information

Type
Original Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of Applied Probability Trust

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