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Spiking neural networks (SNNs) receive widespread attention because of their low-power hardware characteristic and brain-like signal response mechanism, but currently, the performance of SNNs is still behind Artificial Neural Networks…

神经与进化计算 · 计算机科学 2021-05-07 Xingyu Yang , Mingyuan Meng , Shanlin Xiao , Zhiyi Yu

In this paper, we propose a growing random complex network model, which we call context dependent preferential attachment model (CDPAM), when the preference of a new node to get attached to old nodes is determined by the local and global…

社会与信息网络 · 计算机科学 2015-01-13 Pradumn Kumar Pandey , Bibhas Adhikari

We introduce a spatial graph and hypergraph model that smoothly interpolates between a graph with purely pairwise edges and a graph where all connections are in large hyperedges. The key component is a spatial clustering resolution…

社会与信息网络 · 计算机科学 2025-04-10 Omar Eldaghar , Yu Zhu , David F. Gleich

We perform an empirical study of the preferential attachment phenomenon in temporal networks and show that on the Web, networks follow a nonlinear preferential attachment model in which the exponent depends on the type of network…

物理与社会 · 物理学 2013-03-27 Jérôme Kunegis , Marcel Blattner , Christine Moser

Most social, technological and biological networks are embedded in a finite dimensional space, and the distance between two nodes influences the likelihood that they link to each other. Indeed, in social systems, the chance that two…

物理与社会 · 物理学 2018-06-27 Paul Balister , Chaoming Song , Oliver Riordan , Bela Bollobas , Albert-Laszlo Barabasi

All real networks are different, but many have some structural properties in common. There seems to be no consensus on what the most common properties are, but scale-free degree distributions, strong clustering, and community structure are…

物理与社会 · 物理学 2015-05-01 Konstantin Zuev , Marian Boguna , Ginestra Bianconi , Dmitri Krioukov

When network and graph theory are used in the study of complex systems, a typically finite set of nodes of the network under consideration is frequently either explicitly or implicitly considered representative of a much larger finite or…

数据分析、统计与概率 · 物理学 2015-03-18 Jobst Heitzig , Jonathan F. Donges , Yong Zou , Norbert Marwan , Jürgen Kurths

Reciprocity characterizes the information exchange between users in a network, and some empirical studies have revealed that social networks have a high proportion of reciprocal edges. Classical directed preferential attachment (PA) models,…

物理与社会 · 物理学 2021-08-10 Tiandong Wang , Sidney I. Resnick

We investigate two asymptotic properties of a spatial preferential-attachment model introduced by E. Jacob and P. M\"orters (2013). First, in a regime of strong linear reinforcement, we show that typical distances are at most of…

概率论 · 数学 2018-09-28 Christian Hirsch , Christian Mönch

We study a simple model of dynamic networks, characterized by a set preferred degree, $\kappa$. Each node with degree $k$ attempts to maintain its $\kappa$ and will add (cut) a link with probability $w(k;\kappa)$ ($1-w(k;\kappa)$). As a…

物理与社会 · 物理学 2013-07-29 Wenjia Liu , Shivakumar Jolad , Beate Schmittmann , R. K. P. Zia

We define a class of growing networks in which new nodes are given a spatial position and are connected to existing nodes with a probability mechanism favoring short distances and high degrees. The competition of preferential attachment and…

概率论 · 数学 2015-03-18 Emmanuel Jacob , Peter Mörters

Networks with nodes embedded in a metric space have gained increasing interest in recent years. The effects of spatial embedding on the networks' structural characteristics, however, are rarely taken into account when studying their…

物理与社会 · 物理学 2016-07-06 Marc Wiedermann , Jonathan F. Donges , Jürgen Kurths , Reik V. Donner

Preferential attachment models have been widely studied in complex networks, because they can explain the formation of many networks like social networks, citation networks, power grids, and biological networks, to name a few. Motivated by…

社会与信息网络 · 计算机科学 2016-05-03 Sushmita Ruj , Arindam Pal

Complex networks in different areas exhibit degree distributions with heavy upper tail. A preferential attachment mechanism in a growth process produces a graph with this feature. We herein investigate a variant of the simple preferential…

概率论 · 数学 2018-04-18 Angelica Pachon , Laura Sacerdote , Shuyi Yang

We consider the problem of embedding a dynamic network, to obtain time-evolving vector representations of each node, which can then be used to describe changes in behaviour of individual nodes, communities, or the entire graph. Given this…

机器学习 · 统计学 2022-01-21 Ian Gallagher , Andrew Jones , Patrick Rubin-Delanchy

Reciprocity in social networks helps understand information exchange between two individuals, and indicates interaction patterns between pairs of users. A recent study indicates the reciprocity coefficient of a classical directed…

物理与社会 · 物理学 2022-01-12 Daniel Cirkovic , Tiandong Wang , Sidney Resnick

In wireless networks, the knowledge of nodal distances is essential for several areas such as system configuration, performance analysis and protocol design. In order to evaluate distance distributions in random networks, the underlying…

信息论 · 计算机科学 2012-01-24 Sunil Srinivasa , Martin Haenggi

Medical image segmentation data inherently contain uncertainty. This can stem from both imperfect image quality and variability in labeling preferences on ambiguous pixels, which depend on annotator expertise and the clinical context of the…

图像与视频处理 · 电气工程与系统科学 2025-07-17 Jiayuan Zhu , Junde Wu , Cheng Ouyang , Konstantinos Kamnitsas , J. Alison Noble

Tools to analyze the latent space of deep neural networks provide a step towards better understanding them. In this work, we motivate sparse subspace clustering (SSC) with an aim to learn affinity graphs from the latent structure of a given…

机器学习 · 计算机科学 2021-07-06 Uday Singh Saini , Pravallika Devineni , Evangelos E. Papalexakis

In a series of two papers, we investigate the large deviations and asymptotic behavior of stochastic models of brain neural networks with random interaction coefficients. In this first paper, we take into account the spatial structure of…

概率论 · 数学 2017-01-05 Tanguy Cabana , Jonathan Touboul