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arXiv 1205.4013cs.SIphysics.soc-ph
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大规模在线社会网络中的多尺度动力学

Multi-scale Dynamics in a Massive Online Social Network

Xiaohan Zhao, Alessandra Sala, Christo Wilson, Xiao Wang, Sabrina Gaito, Haitao Zheng, Ben Y. Zhao

摘要:

主要社交网络提供商的数据保密政策严重限制了研究人员对大规模数据集的访问。最大的影响是对网络动态的研究,研究人员研究了引用图和内容共享网络,但很少有人分析当今主导网络的大规模社交网络的详细动态。在本文中,我们分析了人人网社交网络的详细动态,涵盖了网络从1个用户增长到1900万用户和1.99亿边缘的2年时间。而不是验证一个单一的网络动态模型,我们分析动态在不同的粒度(用户,社区和网络范围内),以确定有多少,如果有的话,用户在不同尺度的动态过程的影响。我们在每个层面上观察到独立的可预测过程,并发现虽然社区的增长对用户有适度和持续的影响,但网络合并事件等重大事件具有强烈但短暂的影响,并迅速被新用户的不断到来所主导。

英文摘要:

Data confidentiality policies at major social network providers have severely limited researchers' access to large-scale datasets. The biggest impact has been on the study of network dynamics, where researchers have studied citation graphs and content-sharing networks, but few have analyzed detailed dynamics in the massive social networks that dominate the web today. In this paper, we present results of analyzing detailed dynamics in the Renren social network, covering a period of 2 years when the network grew from 1 user to 19 million users and 199 million edges. Rather than validate a single model of network dynamics, we analyze dynamics at different granularities (user-, community- and network- wide) to determine how much, if any, users are influenced by dynamics processes at different scales. We observe in- dependent predictable processes at each level, and find that while the growth of communities has moderate and sustained impact on users, significant events such as network merge events have a strong but short-lived impact that is quickly dominated by the continuous arrival of new users.

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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