In this article, nodes in the network are modeled as mobile agents in a fixed-area 2D space. Links between i and j are formed when i and j collide, i.e. intersect (each node has an circular area of radius r). This model is quite simple: there are just two parameters - density and collision rate. With this simple model, authors could produce macro-characteristics of real networks (degree distribution, clustering coefficient, and average shortest path length). How can it be possible? Like many articles, this article does not say something about the intuitional reason under this phenomena.
Also in another article "Universal behavior of load distribution in scale-free networks. K.-I. Goh, B. Kahng and D. Kim. Phys. Rev. Lett. 87, 278701 (2001)", I was sad that authors could not provide any satisfying explanations on the universality of load distribution. Maybe it's because of the complexity of network structures.
When can we explain successfully macrophenomena emerged through network structures intuitively?
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Now, it's your turn.
I hope so, too. :)
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