Distribution of Edge Load in Scale-free Trees

Details Distribution of Edge Load in Scale-free Trees Distribution of Edge Load in Scale-free Trees

2007-12-12

arxiv.org/abs/0712.1928v1

Phys. Rev. E 73, 046102 (2006)

Computer Science

Networking and Internet Architecture

26 pages, 9 figures

Scientific paper

10.1103/PhysRevE.73.046102

Node betweenness has been studied recently by a number of authors, but until now less attention has been paid to edge betweenness. In this paper, we present an exact analytic study of edge betweenness in evolving scale-free and non-scale-free trees. We aim at the probability distribution of edge betweenness under the condition that a local property, the in-degree of the ``younger'' node of a randomly selected edge, is known. En route to the conditional distribution of edge betweenness the exact joint distribution of cluster size and in-degree, and its one dimensional marginal distributions have been presented in the paper as well. From the derived probability distributions the expectation values of different quantities have been calculated. Our results provide an exact solution not only for infinite, but for finite networks as well.

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