Tuesday, July 16, 2013

1307.3768 (Alan Gabel et al.)

Highly Dispersed Networks    [PDF]

Alan Gabel, P. L. Krapivsky, S. Redner
We introduce a new class of networks that grow by enhanced redirection. Nodes are introduced sequentially, and each either attaches to a randomly chosen target node with probability 1-r or to the ancestor of the target with probability r, where r an increasing function of the degree of the ancestor. This mechanism leads to highly-dispersed networks with unusual properties: (i) existence of multiple macrohubs---nodes whose degree is a finite fraction of the total number of network nodes N, (ii) lack of self averaging, and (iii) anomalous scaling, in which N_k, the number of nodes of degree k scales as N_k N^{nu-1}/k^{nu}, with 1View original: http://arxiv.org/abs/1307.3768

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