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arXiv 1405.7348cs.SI
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ergm.graphlets:一个基于Graphlet统计的ERG建模包

ergm.graphlets: A Package for ERG Modeling Based on Graphlet Statistics

Omer Nebil Yaveroglu, Sean M. Fitzhugh, Maciej Kurant, Athina Markopoulou, Carter T. Butts, Natasa Przulj

摘要:

指数族随机图模型(ERGM)是概率网络模型,其通过基于结构(即,图论)性质。R统计计算系统的ergm包是一个用于在ERGM框架内分析网络数据的工具集合。通过使用ergm包中定义的模型项,可以将许多不同的网络属性用作ERGM的充分统计数据;可以通过创建用于其他网络统计数据的代码包来扩展此功能。在这里,我们的重点是添加基于graphlet的统计数据。小图是小的、连通的、非同构的诱导子图,描述了网络的拓扑结构。我们引入了一个名为ergm.graphlets的R包,它允许在R的ergm包中使用网络的graphlet属性。graphlets包提供了一个完整的模型项列表,允许将任何2-,3-,4-和5-节点graphlet的统计数据合并到ERGM中。ergm.graphlets包的新模型项使全局结构特性的ERG建模和节点属性(即,协变量)和节点周围的局部拓扑。

英文摘要:

Exponential-family random graph models (ERGMs) are probabilistic network models that are parametrized by sufficient statistics based on structural (i.e., graph-theoretic) properties. The ergm package for the R statistical computing system is a collection of tools for the analysis of network data within an ERGM framework. Many different network properties can be employed as sufficient statistics for ERGMs by using the model terms defined in the ergm package; this functionality can be expanded by the creation of packages that code for additional network statistics. Here, our focus is on the addition of statistics based on graphlets. Graphlets are small, connected, and non-isomorphic induced subgraphs that describe the topological structure of a network. We introduce an R package called ergm.graphlets that enables the use of graphlet properties of a network within the ergm package of R. The ergm.graphlets package provides a complete list of model terms that allows to incorporate statistics of any 2-, 3-, 4- and 5-node graphlet into ERGMs. The new model terms of ergm.graphlets package enable both ERG modelling of global structural properties and investigation of relationships between nodal attributes (i.e., covariates) and local topologies around nodes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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