Local structure of directed networks

Details Local structure of directed networks Local structure of directed networks

2007-07-27

arxiv.org/abs/0707.4084v2

Phys. Rev. Lett. 100, 118701 (2008)

Physics

Physics and Society

Scientific paper

10.1103/PhysRevLett.100.118701

Previous work on undirected small-world networks established the paradigm that locally structured networks tend to have high density of short loops. On the other hand, many realistic networks are directed. Here we investigate the local organization of directed networks and find, surprisingly, that real networks often have very few short loops as compared to random models. We develop a theory and derive conditions for determining if a given network has more or less loops than its randomized counterpart. These findings carry broad implications for structural and dynamical processes sustained by directed networks.

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