论文标题

优先依恋超图与顶点停用

Preferential attachment hypergraph with vertex deactivation

论文作者

Giroire, Frédéric, Nisse, Nicolas, Ohulchanskyi, Kostiantyn, Sulkowska, Małgorzata, Trolliet, Thibaud

论文摘要

在复杂网络的领域,到目前为止,超图模型的关注明显少于图。但是,许多现实生活中的网络具有多级关系(共同作者,蛋白质反应)​​,可以通过超图更好地建模。同样,Broido和Clauset最近的一项研究表明,在天然系统中,幂律学位分布并不像到目前为止的自然系统中那么普遍。他们在实验上证实,大多数网络(经过测试的约1000个网络中有56%)偏向于具有指数截止的幂律,而不是其他分布。我们通过引入优先附件超图模型来解决以上两个观测值,该模型允许顶点停用。在现有的理论模型中很少有顶点停用的现象,并且在现实生活中的无处不在(社交网络帐户都无法永远维护的社交网络帐户,人们退休的协作网络,设备分解的技术网络)。我们证明,所提出的模型的度分布遵循具有指数截止的幂律。我们还通过实验检查Scopus协作网络具有相同的特征。我们认为,我们的模型将在各种领域中很好地预测系统的行为。

In the field of complex networks, hypergraph models have so far received significantly less attention than graphs. However, many real-life networks feature multiary relations (co-authorship, protein reactions) may therefore be modeled way better by hypergraphs. Also, a recent study by Broido and Clauset suggests that a power-law degree distribution is not as ubiquitous in the natural systems as it was thought so far. They experimentally confirm that a majority of networks (56% of around 1000 networks that undergone the test) favor a power-law with an exponential cutoff over other distributions. We address the two above observations by introducing a preferential attachment hypergraph model which allows for vertex deactivations. The phenomenon of vertex deactivations is rare in existing theoretical models and omnipresent in real-life scenarios (social network accounts which are not maintained forever, collaboration networks in which people retire, technological networks in which devices break down). We prove that the degree distribution of the proposed model follows a power-law with an exponential cutoff. We also check experimentally that a Scopus collaboration network has the same characteristic. We believe that our model will predict well the behavior of systems from a variety of domains.

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