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We develop a statistical theory to characterize correlations in weighted networks. We define the appropriate metrics quantifying correlations and show that strictly uncorrelated weighted networks do not exist due to the presence of…

无序系统与神经网络 · 物理学 2009-11-11 M. Angeles Serrano , Marian Boguna , Romualdo Pastor-Satorras

Random geometric graphs result from taking $n$ uniformly distributed points in the unit cube, $[0,1]^d$, and connecting two points if their Euclidean distance is at most $r$, for some prescribed $r$. We show that monotone properties for…

概率论 · 数学 2007-05-23 Ashish Goel , Sanatan Rai , Bhaskar Krishnamachari

A metric probability space $M$ admits thresholds if the random geometric graph on $M$ has a threshold for every monotone graph property. We connect the existence of thresholds to the uniform expansion of $M$ and prove that all standard…

组合数学 · 数学 2026-05-21 Bhargav Narayanan

The purpose of this paper is to assess the statistical characterization of weighted networks in terms of the generalization of the relevant parameters, namely average path length, degree distribution and clustering coefficient. Although the…

物理与社会 · 物理学 2007-05-23 Antoniou Ioannis , Tsompa Eleni

It appeared recently that the classical random graph model used to represent real-world complex networks does not capture their main properties. Since then, various attempts have been made to provide accurate models. We study here a model…

统计力学 · 物理学 2021-03-22 Jean-Loup Guillaume , Matthieu Latapy

We propose a wide class of preferential attachment models of random graphs, generalizing previous approaches. Graphs described by these models obey the power-law degree distribution, with the exponent that can be controlled in the models.…

组合数学 · 数学 2015-05-20 Liudmila Ostroumova , Alexander Ryabchenko , Egor Samosvat

We introduce a natural generalization of the Erd\H{o}s-R\'enyi random graph model in which random instances of a fixed motif are added independently. The binomial random motif graph $G(H,n,p)$ is the random (multi)graph obtained by adding…

组合数学 · 数学 2019-07-30 Michael Anastos , Peleg Michaeli , Samantha Petti

A total dominating set in a graph is a set of vertices such that every vertex of the graph has a neighbor in the set. We introduce and study graphs that admit non-negative real weights associated to their vertices such that a set of…

组合数学 · 数学 2015-05-12 Nina Chiarelli , Martin Milanic

A model of correlated random networks is examined, i.e. networks with correlations between the degrees of neighboring nodes. These nodes do not necessarily have to be direct neighbors, the maximum range of the correlations can be…

统计力学 · 物理学 2007-05-23 W. Pietsch

Many real networks are equipped with short diameters, high clustering, and power-law degree distributions. With preferential attachment and network growth, the model by Barabasi and Albert simultaneously reproduces these properties, and…

无序系统与神经网络 · 物理学 2007-05-23 Naoki Masuda , Hiroyoshi Miwa , Norio Konno

We consider a class of growing random graphs obtained by creating vertices sequentially one by one: at each step, we choose uniformly the neighbours of the newly created vertex; its degree is a random variable with a fixed but arbitrary…

组合数学 · 数学 2013-11-13 Svante Janson , Simone Severini

Mock threshold graphs are a simple generalization of threshold graphs that, like threshold graphs, are perfect graphs. Our main theorem is a characterization of mock threshold graphs by forbidden induced subgraphs. Other theorems…

组合数学 · 数学 2021-06-16 Richard Behr , Vaidy Sivaraman , Thomas Zaslavsky

For a given homogeneous Poisson point process in $\mathbb{R}^d$ two points are connected by an edge if their distance is bounded by a prescribed distance parameter. The behaviour of the resulting random graph, the Gilbert graph or random…

概率论 · 数学 2017-11-06 Matthias Reitzner , Matthias Schulte , Christoph Thaele

We describe the structure of connected graphs with the minimum and maximum average distance, radius, diameter, betweenness centrality, efficiency and resistance distance, given their order and size. We find tight bounds on these graph…

分子网络 · 定量生物学 2011-05-02 Dionysios Barmpoutis , Richard M. Murray

Tensor networks have found a wide use in a variety of applications in physics and computer science, recently leading to both theoretical insights as well as practical algorithms in machine learning. In this work we explore the connection…

量子物理 · 物理学 2019-12-04 Ivan Glasser , Nicola Pancotti , J. Ignacio Cirac

We derive the sampling properties of random networks based on weights whose pairwise products parameterize independent Bernoulli trials. This enables an understanding of many degree-based network models, in which the structure of realized…

统计理论 · 数学 2013-06-07 Sofia C. Olhede , Patrick J. Wolfe

Local thresholding algorithms were first presented more than a decade ago and have since been applied to a variety of data mining tasks in peer-to-peer systems, wireless sensor networks, and in grid systems. One critical assumption made by…

分布式、并行与集群计算 · 计算机科学 2013-04-09 Ran Wolff

We propose the following model of a random graph on n vertices. Let F be a distribution in R_+^{n(n-1)/2} with a coordinate for every pair i$ with 1 \le i,j \le n. Then G_{F,p} is the distribution on graphs with n vertices obtained by…

组合数学 · 数学 2011-08-09 Alan Frieze , Santosh Vempala , Juan Vera

We consider a random geometric hypergraph model based on an underlying bipartite graph. Nodes and hyperedges are sampled uniformly in a domain, and a node is assigned to those hyperedges that lie with a certain radius. From a modelling…

概率论 · 数学 2023-09-19 Henry-Louis de Kergorlay , Desmond J. Higham

We consider a variant of so called power-law random graph. A sequence of expected degrees corresponds to a power-law degree distribution with finite mean and infinite variance. In previous works the asymptotic picture with number of nodes…

概率论 · 数学 2007-12-12 Hannu Reittu , Ilkka Norros