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25 September 2022
 
  » arxiv » cond-mat/0504294

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Properties of weighted complex networks
Xin-Jian Xu ; Zhi-Xi Wu ; Ying-Hai Wang ;
Date 12 Apr 2005
Subject Statistical Mechanics | cond-mat.stat-mech
AbstractWe study two kinds of weighted networks, weighted small-world (WSW) and weighted scale-free (WSF). The weight $w_{ij}$ of a link between nodes $i$ and $j$ in the network is defined as the product of endpoint node degrees; that is $w_{ij}=(k_{i}k_{j})^{ heta}$. In contrast to adding weights to links during networks being constructed, we only consider weights depending on the `` popularity q q of the nodes represented by their connectivity. It was found that the both weighted networks have broad distributions on characterization the link weight, vertex strength, and average shortest path length. Furthermore, as a survey of the model, the epidemic spreading process in both weighted networks was studied based on the standard emph{susceptible-infected} (SI) model. The spreading velocity reaches a peak very quickly after the infection outbreaks and an exponential decay was found in the long time propagation.
Source arXiv, cond-mat/0504294
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