Skip to content. | Skip to navigation

Personal tools

Sections

Consider the world interacting

  • Logo CNRS
  • Logo ENSL
  • logo-enssib.jpg
You are here: Home / Research / Selected publications / Local cascades induced global contagion: How heterogeneous thresholds, exogenous effects, and unconcerned behaviour govern online adoption spreading

Local cascades induced global contagion: How heterogeneous thresholds, exogenous effects, and unconcerned behaviour govern online adoption spreading

2016 - Márton Karsai, Gerardo Iñiguez, Riivo Kikas, Kimmo Kaski & János Kertész

Abstract : Adoption of innovations, products or online services is commonly interpreted as a spreading process driven to large extent by social influence and conditioned by the needs and capacities of individuals. To model this process one usually introduces behavioural threshold mechanisms, which can give rise to the evolution of global cascades if the system satisfies a set of conditions. However, these models do not address temporal aspects of the emerging cascades, which in real systems may evolve through various pathways ranging from slow to rapid patterns. Here we fill this gap through the analysis and modelling of product adoption in the world's largest voice over internet service, the social network of Skype. We provide empirical evidence about the heterogeneous distribution of fractional behavioural thresholds, which appears to be independent of the degree of adopting egos. We show that the structure of real-world adoption clusters is radically different from previous theoretical expectations, since vulnerable adoptions --induced by a single adopting neighbour-- appear to be important only locally, while spontaneous adopters arriving at a constant rate and the involvement of unconcerned individuals govern the global emergence of social spreading.

Accepted in Scientific Reports (Nature)

Actualités
Jul 19, 2019 Equipe au Centre de Recherches sur la Cognition Animale à Toulouse
Apr 09, 2019 Date limite : les projets doivent être soumis au plus tard le 24 mai 2019 au plus tard. Tous les renseignements ici: http://www.ixxi.fr/appel-a-projets
Mar 13, 2019 Les Guyanes réunies pour valoriser le « capital naturel » - Le plateau des Guyanes représente l’un des derniers grands massifs forestiers faiblement fragmentés à l’échelle planétaire. Pour autant, cette région demeure mal connue sur la scène internationale.
Mar 12, 2019 Grâce au soutien du DIM Problématiques transversales aux Systèmes Complexes (Région Île-de-France), l’ISC-PIF décerne annuellement un prix de thèse dont l’objectif est de mettre à l’honneur la recherche dans le domaine des systèmes complexes et de distinguer les travaux de jeunes chercheurs·euses particulièrement prometteurs·euses.