Journal Club du LPTMS: Ricardo Marino

Temporal Effects in the Growth of Networks

Ricardo Marino, PhD student LPTMS

This article explores a very interesting model in random graphs for preferential attachment with time-decaying properties, ideal for problems in which « popularity » decays over time (for instance, article citations).

http://prl.aps.org/abstract/PRL/v107/i23/e238701

Matúš Medo, Giulio Cimini, and Stanislao Gualdi

Abstract of the article : We show that to explain the growth of the citation network by preferential attachment (PA), one has to accept that individual nodes exhibit heterogeneous fitness values that decay with time. While previous PA-based models assumed either heterogeneity or decay in isolation, we propose a simple analytically treatable model that combines these two factors. Depending on the input assumptions, the resulting degree distribution shows an exponential, log-normal or power-law decay, which makes the model an apt candidate for modeling a wide range of real systems.


Date/Time : 11/02/2013 - 12:30 - 13:15

Location : LPTMS, salle 201, 2ème étage, Bât 100, Campus d'Orsay

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