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Journal Articles Scientific Reports Year : 2015

The Scaling of Human Contacts in Reaction-Diffusion Processes on Heterogeneous Metapopulation Networks

Abstract

We present new empirical evidence, based on millions of interactions on Twitter, confirming that human contacts scale with population sizes. We integrate such observations into a reaction-diffusion metapopulation framework providing an analytical expression for the global invasion threshold of a contagion process. Remarkably, the scaling of human contacts is found to facilitate the spreading dynamics. Our results show that the scaling properties of human interactions can significantly affect dynamical processes mediated by human contacts such as the spread of diseases, and ideas.

Dates and versions

hal-01100351 , version 1 (06-01-2015)

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Michele Tizzoni, Kaiyuan Sun, Diego Benusiglio, Márton Karsai, Nicola Perra. The Scaling of Human Contacts in Reaction-Diffusion Processes on Heterogeneous Metapopulation Networks. Scientific Reports, 2015, 5 (15111). ⟨hal-01100351⟩
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