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随机图上渗流的一般且精确的方法。

General and exact approach to percolation on random graphs.

作者信息

Allard Antoine, Hébert-Dufresne Laurent, Young Jean-Gabriel, Dubé Louis J

机构信息

Département de physique, de génie physique, et d'optique, Université Laval, Québec, Québec, Canada G1V 0A6.

出版信息

Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Dec;92(6):062807. doi: 10.1103/PhysRevE.92.062807. Epub 2015 Dec 7.

Abstract

We present a comprehensive and versatile theoretical framework to study site and bond percolation on clustered and correlated random graphs. Our contribution can be summarized in three main points. (i) We introduce a set of iterative equations that solve the exact distribution of the size and composition of components in finite-size quenched or random multitype graphs. (ii) We define a very general random graph ensemble that encompasses most of the models published to this day and also makes it possible to model structural properties not yet included in a theoretical framework. Site and bond percolation on this ensemble is solved exactly in the infinite-size limit using probability generating functions [i.e., the percolation threshold, the size, and the composition of the giant (extensive) and small components]. Several examples and applications are also provided. (iii) Our approach can be adapted to model interdependent graphs-whose most striking feature is the emergence of an extensive component via a discontinuous phase transition-in an equally general fashion. We show how a graph can successively undergo a continuous then a discontinuous phase transition, and preliminary results suggest that clustering increases the amplitude of the discontinuity at the transition.

摘要

我们提出了一个全面且通用的理论框架,用于研究聚类和相关随机图上的点渗流和键渗流。我们的贡献可概括为三点。(i)我们引入了一组迭代方程,用于求解有限大小的淬火或随机多类型图中组件的大小和组成的精确分布。(ii)我们定义了一个非常通用的随机图系综,它涵盖了迄今为止发表的大多数模型,并且还能够对尚未包含在理论框架中的结构特性进行建模。利用概率生成函数,在无限大小极限下精确求解了该系综上的点渗流和键渗流[即渗流阈值、巨型(扩展)和小组件的大小及组成]。还提供了几个示例和应用。(iii)我们的方法可以以同样通用的方式适用于对相互依存的图进行建模,其最显著的特征是通过不连续相变出现一个扩展组件。我们展示了一个图如何依次经历连续相变然后是不连续相变,初步结果表明聚类会增加相变处不连续的幅度。

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