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In 2007 we introduced a general model of sparse random graphs with independence between the edges. The aim of this paper is to present an extension of this model in which the edges are far from independent, and to prove several results…

概率论 · 数学 2011-05-05 Bela Bollobas , Svante Janson , Oliver Riordan

We study the susceptibility, i.e., the mean size of the component containing a random vertex, in a general model of inhomogeneous random graphs. This is one of the fundamental quantities associated to (percolation) phase transitions; in…

概率论 · 数学 2012-03-27 Svante Janson , Oliver Riordan

We consider random graphs sampled uniformly from a structured class of graphs, such as the class of graphs embeddable in a given surface. We sharpen and extend earlier results on pendant appearances, concerning for example numbers of…

组合数学 · 数学 2024-05-07 Colin McDiarmid

Traditional random graph models of networks generate networks that are locally tree-like, meaning that all local neighborhoods take the form of trees. In this respect such models are highly unrealistic, most real networks having strongly…

统计力学 · 物理学 2011-03-02 Brian Karrer , M. E. J. Newman

We consider random graphs in which the edges are allowed to be dependent. In our model the edge dependence is quite general, we call it $p$-robust random graph. It means that every edge is present with probability at least $p$, regardless…

离散数学 · 计算机科学 2020-12-04 Zohre Ranjbar-Mojaveri , Andras Farago

We propose and investigate a unifying class of sparse random graph models, based on a hidden coloring of edge-vertex incidences, extending an existing approach, Random graphs with a given degree distribution, in a way that admits a…

统计力学 · 物理学 2009-11-10 Bo Söderberg

Many real-world networks of interest are embedded in physical space. We present a new random graph model aiming to reflect the interplay between the geometries of the graph and of the underlying space. The model favors configurations with…

概率论 · 数学 2017-06-14 Jean-Christophe Mourrat , Daniel Valesin

We deal with a random graph model where at each step, a vertex is chosen uniformly at random, and it is either duplicated or its edges are deleted. Duplication has a given probability. We analyse the limit distribution of the degree of a…

概率论 · 数学 2014-09-19 Ágnes Backhausz , Tamás F. Móri

Graphs are used to represent and analyze data in domains as diverse as physics, biology, chemistry, planetary science, and the social sciences. Across domains, random graph models relate generative processes to expected graph properties,…

物理与社会 · 物理学 2025-09-12 Cole Mathis , Harrison B. Smith

The study of random graphs has become very popular for real-life network modeling such as social networks or financial networks. Inhomogeneous long-range percolation (or scale-free percolation) on the lattice $\mathbb Z^d$, $d\ge1$, is a…

概率论 · 数学 2014-09-29 Philippe Deprez , Rajat Subhra Hazra , Mario V. Wüthrich

We propose generalizations of a number of standard network models, including the classic random graph, the configuration model, and the stochastic block model, to the case of time-varying networks. We assume that the presence and absence of…

社会与信息网络 · 计算机科学 2018-05-02 Xiao Zhang , Cristopher Moore , M. E. J. Newman

Graphs are used in many disciplines to model the relationships that exist between objects in a complex discrete system. Researchers may wish to compare a network of interest to a "typical" graph from a family (or ensemble) of graphs which…

组合数学 · 数学 2025-08-08 Catherine Greenhill

We analyze a minimal model of a growing network. At each time step, a new vertex is added; then, with probability delta, two vertices are chosen uniformly at random and joined by an undirected edge. This process is repeated for t time…

We study a variant of the standard random intersection graph model ($G(n,m,F,H)$) in which random weights are assigned to both vertex types in the bipartite structure. Under certain assumptions on the distributions of these weights, the…

组合数学 · 数学 2010-03-10 Yilun Shang

We consider a model for random hypergraphs with identifiability, an analogue of connectedness. This model has a phase transition in the proportion of identifiable vertices when the underlying random graph becomes critical. The phase…

概率论 · 数学 2007-05-23 Christina Goldschmidt

Random graph (RG) models play a central role in the complex networks analysis. They help to understand, control, and predict phenomena occurring, for instance, in social networks, biological networks, the Internet, etc. Despite a large…

社会与信息网络 · 计算机科学 2024-03-22 Mikhail Drobyshevskiy , Denis Turdakov

This contribution proposes a new approach towards developing a class of probabilistic methods for classifying attributed graphs. The key concept is random attributed graph, which is defined as an attributed graph whose nodes and edges are…

计算机视觉与模式识别 · 计算机科学 2011-09-23 S. Deepak Srinivasan , Klaus Obermayer

A random graph model with prescribed degree distribution and degree dependent edge weights is introduced. Each vertex is independently equipped with a random number of half-edges and each half-edge is assigned an integer valued weight…

概率论 · 数学 2015-05-28 Tom Britton , Maria Deijfen , Fredrik Liljeros

The focus of this thesis is about statistical mechanics on heterogeneous random graphs, i.e. how this heterogeneity affects the cooperative behavior of model systems. It is not intended as a review on it, rather it is showed how this…

统计力学 · 物理学 2010-10-27 Daniele De Martino

Probabilistic graphical models combine the graph theory and probability theory to give a multivariate statistical modeling. They provide a unified description of uncertainty using probability and complexity using the graphical model.…

机器学习 · 统计学 2011-11-30 Yang Zhou