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arXiv 0704.1847physics.soc-phphysics.data-an
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生长网络:任意出度为1的限制入度分布

Growing Networks: Limit in-degree distribution for arbitrary out-degree one

Daniel Fraiman

摘要:

我们计算了一个具有有向边和任意出度概率的增长网络模型的稳态入度概率$P_{in}(k)$。特别是,在优先链接,我们发现,如果节点有一个轻尾(有限方差)出度分布,那么相应的入度的行为$k^{-3}$。此外,对于具有标度不变尾部的出度分布$P_{out}(k)\sim k^{-α}$,对应的入度分布只有当$2<α<3$(无穷方差)时才具有完全相同的渐近行为。当包括吸引力时,得到类似的结果。我们还提出了一些结果的描述性统计措施%描述性统计,如进入的链接,$D_{in}$,和传出的链接,$D_{out}$,和条件期望的$D_{in}$给定$D_{out}$的数量之间的相关性,我们计算这些措施的WWW网络。最后,我们提出了一个应用程序的科学出版物网络。本文给出的结果可以解释在许多真实网络中观察到的入/出度分布的尾部行为。

英文摘要:

We compute the stationary in-degree probability, $P_{in}(k)$, for a growing network model with directed edges and arbitrary out-degree probability. In particular, under preferential linking, we find that if the nodes have a light tail (finite variance) out-degree distribution, then the corresponding in-degree one behaves as $k^{-3}$. Moreover, for an out-degree distribution with a scale invariant tail, $P_{out}(k)\sim k^{-α}$, the corresponding in-degree distribution has exactly the same asymptotic behavior only if $2<α<3$ (infinite variance). Similar results are obtained when attractiveness is included. We also present some results on descriptive statistics measures %descriptive statistics such as the correlation between the number of in-going links, $D_{in}$, and outgoing links, $D_{out}$, and the conditional expectation of $D_{in}$ given $D_{out}$, and we calculate these measures for the WWW network. Finally, we present an application to the scientific publications network. The results presented here can explain the tail behavior of in/out-degree distribution observed in many real networks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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