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Results for criterions: Keyword: Networks Modify search criterions 1 match Title Social influence and diffusion of innovation Author STEYER Alexandre, ZIMMERMANN Jean-Benoit Keywords Diffusion, Diffusion curve, Innovation, Learning, Networks, Power law, Social influence, Structure Topics Diffusion, Dynamical Systems, Networks, Social Sciences Abstract The notion of diffusion holds a central place in any social system, because it is at the heart of individuals behaviour or representation phasing, hence of the co-ordination of their actions. The idea at the origin of the notion of diffusion is that inter-individual interactions are the driving forces of the evolution of individuals' behaviours, beliefs and represen-tations. Our approach in this paper is based on social influence networks. Agents are embedded in network structures where the influence advance depends on cumulative effects. First we draw the foundations of a diffusion model based on social influence networks. Then we study the way of propagation of influence trough "avalanches" giving a central importance to the network topology. We consider the noise produced by those avalanches as a characteristic of the social structure that can contribute, by learning effect, to transform the network structure, hence the dynamics of the diffusion. We then explain why peculiar "critical" diffusion curves do emerge characterized by a power law instead of the exponential form of traditional diffusion curves. Number 168, Winter 2004, special issue: Social networks Language   French Read the article Users rights : The entire journal is licensed under a Creative Commons license