Scaling properties in spatial networks and its effects on topology and traffic dynamics

Details Scaling properties in spatial networks and its effects on topology and traffic dynamics Scaling properties in spatial networks and its effects on topology and traffic dynamics

2009-08-27

arxiv.org/abs/0908.3968v1

Physics

Physics and Society

7 pages,9 figures

Scientific paper

Empirical studies on the spatial structures in several real transport networks reveal that the distance distribution in these networks obeys power law. To discuss the influence of the power-law exponent on the network's structure and function, a spatial network model is proposed. Based on a regular network and subject to a limited cost $C$, long range connections are added with power law distance distribution $P(r)=ar^{-\delta}$. Some basic topological properties of the network with different $\delta$ are studied. It is found that the network has the smallest average shortest path when $\delta=2$. Then a traffic model on this network is investigated. It is found that the network with $\delta=1.5$ is best for the traffic process. All of these results give us some deep understandings about the relationship between spatial structure and network function.

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