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Many networks can be characterised by the presence of communities, which are groups of units that are closely linked. Identifying these communities can be crucial for understanding the system's overall function. Recently, hypergraphs have…

社会与信息网络 · 计算机科学 2024-03-12 Quintino Francesco Lotito , Federico Musciotto , Alberto Montresor , Federico Battiston

We performed a large-scale crawl of the World Wide Web, covering 6.9 Million domains and 57 Million subdomains, including all high-traffic sites of the Internet. We present a study of the correlations found between quantities measuring the…

物理与社会 · 物理学 2015-06-12 G. A. Luduena , H. Meixner , Gregor Kaczor , Claudius Gros

We study evolving networks where new nodes when attached to the network form links with other nodes of preferred distances. A particular case is where always the shortest distances are selected (``make friends with the friends of your…

统计力学 · 物理学 2009-11-07 J. Jost , M. P. Joy

A model of distribution of the wealth in a society based on the properties of complex networks has been proposed. The wealth is interpreted as a consequence of communication possibilities and proportional to the number of connections…

物理与社会 · 物理学 2010-10-12 D. Lande , A. Snarskii , M. Zhenirovskyy

A wealth of evidence shows that real world networks are endowed with the small-world property i.e., that the maximal distance between any two of their nodes scales logarithmically rather than linearly with their size. In addition, most…

Spectral clustering has become one of the most popular algorithms in data clustering and community detection. We study the performance of classical two-step spectral clustering via the graph Laplacian to learn the stochastic block model.…

机器学习 · 统计学 2020-04-22 Shaofeng Deng , Shuyang Ling , Thomas Strohmer

We derive the finite size dependence of the clustering coefficient of scale-free random graphs generated by the configuration model with degree distribution exponent $2<\gamma<3$. Degree heterogeneity increases the presence of triangles in…

无序系统与神经网络 · 物理学 2015-06-05 Pol Colomer-de-Simon , Marian Boguna

Many real networks have cliques as their constitutional units. Here we present a family of scale-free network model consist of cliques, which is established by a simple recursive algorithm. We investigate the networks both analytically and…

统计力学 · 物理学 2007-05-23 Zhongzhi Zhang , Shuigeng Zhou

Detecting communities in complex networks accurately is a prime challenge, preceding further analyses of network characteristics and dynamics. Until now, community detection took into account only positively valued links, while many actual…

物理与社会 · 物理学 2009-09-25 V. A. Traag , Jeroen Bruggeman

The coexistence of sparsity and clustering (non-vanishing average fraction of triangles per node) is one of the few structural features that, irrespective of finer details, are ubiquitously observed across large real-world networks. This…

概率论 · 数学 2026-03-17 Alessio Catanzaro , Remco van der Hofstad , Diego Garlaschelli

The random networks enriched with additional structures as metric and group-symmetry in background metric space are investigated. The important quantities like he clustering coefficient as well as the mean degree of separation in such…

统计理论 · 数学 2012-09-03 Michal Demetrian , Martin Nehez

Communities are clusters of nodes with a higher than average density of internal connections. Their detection is of great relevance to better understand the structure and hierarchies present in a network. Modularity has become a standard…

物理与社会 · 物理学 2015-03-17 Filippo Radicchi , Andrea Lancichinetti , José J. Ramasco

Paper proposes a model of large networks based on a random preferential attachment graph with addition of complete subgraphs (cliques). The proposed model refers to models of random graphs following the nonlinear preferential attachment…

社会与信息网络 · 计算机科学 2019-04-05 E. B. Yudin

Modern scientific work, including writing papers and submitting research grant proposals, increasingly involves researchers from different institutions. In grant collaborations, it is known that institutions involved in many collaborations…

物理与社会 · 物理学 2023-05-23 Kazuki Nakajima , Kazuyuki Shudo , Naoki Masuda

We analyse the large-scale structure of the journal citation network built from information contained in the Thomson-Reuters Journal Citation Reports. To this end, we take advantage of the network science paraphernalia and explore network…

社会与信息网络 · 计算机科学 2011-10-19 Massimo Franceschet

Nowadays there is a multitude of measures designed to capture different aspects of network structure. To be able to say if the structure of certain network is expected or not, one needs a reference model (null model). One frequently used…

其他定量生物学 · 定量生物学 2007-05-23 Petter Holme , Jing Zhao

In this paper, we analyze the behavior of the global clustering coefficient in scale free graphs. We are especially interested in the case of degree distribution with an infinite variance, since such degree distribution is usually observed…

概率论 · 数学 2015-06-09 Liudmila Ostroumova Prokhorenkova , Egor Samosvat

A diffusion process on complex networks is introduced in order to uncover their large scale topological structures. This is achieved by focusing on the slowest decaying diffusive modes of the network. The proposed procedure is applied to…

统计力学 · 物理学 2009-11-10 Ingve Simonsen , Kasper Astrup Eriksen , Sergei Maslov , Kim Sneppen

We describe and develop three recent novelties in network research which are particularly useful for studying social systems. The first one concerns the discovery of some basic dynamical laws that enable the emergence of the fundamental…

物理与社会 · 物理学 2011-03-22 Pedro G. Lind , Hans J. Herrmann

The clustering of a data set is one of the core tasks in data analytics. Many clustering algorithms exhibit a strong contrast between a favorable performance in practice and bad theoretical worst-cases. Prime examples are least-squares…

最优化与控制 · 数学 2018-09-05 S. Borgwardt , F. Happach