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arXiv 0908.2163physics.soc-phphysics.data-anphysics.pop-ph
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大型在线社交网络的演变

Evolution of a large online social network

Haibo Hu, Xiaofan Wang

摘要:

虽然近年来对协作网络和在线社区有了广泛的研究,但对在线社交网络(OSN)的实际演变却知之甚少。在这封信中,我们研究了一个大型在线虚拟社区的结构演变。我们发现OSN的尺度增长呈现出非平凡的S形,这为Bass扩散模型提供了一个恰当的例证。结果表明,网络的密度、聚类性、异质性和模块性等网络性质的演化具有非单调性,网络的路径长度和直径出现收缩现象.此外,OSN经历了从协作网络的度同配性特征到许多OSN的度异配性特征的转变。我们的研究揭示了特定人群中人际互动的进化模式,并为理论建模和进一步分析提供了有价值的平台。

英文摘要:

Although recently there are extensive research on the collaborative networks and online communities, there is very limited knowledge about the actual evolution of the online social networks (OSN). In the Letter, we study the structural evolution of a large online virtual community. We find that the scale growth of the OSN shows non-trivial S shape which may provide a proper exemplification for Bass diffusion model. We reveal that the evolutions of many network properties, such as density, clustering, heterogeneity and modularity, show non-monotone feature, and shrink phenomenon occurs for the path length and diameter of the network. Furthermore, the OSN underwent a transition from degree assortativity characteristic of collaborative networks to degree disassortativity characteristic of many OSNs. Our study has revealed the evolutionary pattern of interpersonal interactions in a specific population and provided a valuable platform for theoretical modeling and further analysis.

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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