Emergence of weight-topology correlations in complex scale-free networks

被引:49
作者
Bianconi, G
机构
[1] Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy
[2] INFM, UdR Trieste, I-34014 Trieste, Italy
来源
EUROPHYSICS LETTERS | 2005年 / 71卷 / 06期
关键词
D O I
10.1209/epl/i2005-10167-2
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Different weighted scale-free networks show weight-topology correlations. A clear signature of these correlations is given by the non-linear scaling of the node strength with its connectivity. In this paper, we show that networks with and without weight-topology correlations can emerge from the same simple growth dynamics of the nodes connectivities and of the links weights. A weighted fitness network is introduced in which both nodes and links are assigned intrinsic fitness. This model can show a local dependence of the weight-topology correlations and can undergo a phase transition to a state in which the network is dominated by few links which acquire a finite fraction of the total weight of the network.
引用
收藏
页码:1029 / 1035
页数:7
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