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Letter

Nature Physics 2, 110–115 (1 February 2006) | doi:10.1038/nphys209

Detecting rich-club ordering in complex networks

V. Colizza , A. Flammini , M. A. Serrano & A. Vespignani

Uncovering the hidden regularities and organizational principles of networks arising in physical systems ranging from the molecular level to the scale of large communication infrastructures is the key issue in understanding their fabric and dynamical properties. The |[lsquo]|rich-club|[rsquo]| phenomenon refers to the tendency of nodes with high centrality, the dominant elements of the system, to form tightly interconnected communities, and it is one of the crucial properties accounting for the formation of dominant communities in both computer and social sciences.