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

Autor:	Tizzoni, Michele, Sun, Kaiyuan, Benusiglio, Diego, Karsai, Márton, Perra, Nicola
Rok vydání:	2014
Předmět:	Physics - Physics and Society Quantitative Biology - Populations and Evolution
Druh dokumentu:	Working Paper
Popis:	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.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1411.7310 Zobrazit plný text záznamu View this record from Arxiv