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/ R Quax
Journal of the royal society. The diminishing role of hubs in dynamical processes on complex networks [texte imprimé] / R Quax, Auteur ; A. Apolloni, Auteur ; P M. A. Sloot, Auteur . - (RU) : ITMO, 2013 . - 11p. Langues : Anglais ( eng) Catégories : | AUTRES SCIENCES FONDAMENTALES
| Mots-clés : | Réseau Complexe, Processus Dynamique Information Théorique | Index. décimale : | U900-Informatique | Résumé : | It is notoriously difficult to predict the behaviour of a complex self-organizing
system, where the interactions among dynamical units form a heterogeneous
topology. Even if the dynamics of each microscopic unit is known, a real
understanding of their contributions to the macroscopic system behaviour is
still lacking. Here, we develop information-theoretical methods to distinguish
the contribution of each individual unit to the collective out-of-equilibrium
dynamics.We show that for a system of units connected by a network of interaction
potentials with an arbitrary degree distribution, highly connected units
have less impact on the system dynamics when compared with intermediately
connected units. In an equilibrium setting, the hubs are often found to dictate
the long-term behaviour. However, we find both analytically and experimentally
that the instantaneous states of these units have a short-lasting effect on
the state trajectory of the entire system.We present qualitative evidence of this
phenomenon from empirical findings about a social network of product recommendations,
a protein–protein interaction network and a neural network,
suggesting that it might indeed be a widespread property in nature. |
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ZV0170013 | U900-QUA | Article scientifique | LNERV | Rayons | Exclu du prêt |
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