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arXiv 1302.0274physics.soc-phcs.SI
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移动电话通信网络中信息流的方向性

Directedness of information flow in mobile phone communication networks

Fernando Peruani, Lionel Tabourier

摘要:

在不直接访问正在交换的信息的情况下,可以通过查看用户交互的时间序列来获得信息流的踪迹。这些序列可以表示为因果关系树,其统计结果来自底层(社交)网络的拓扑结构与通信之间的时间相关性之间的复杂相互作用。在这里,我们研究的因果关系树的手机数据,这可以表示为一个动态的有向网络。数据的这种表示揭示了超级传播者和超级接收者的存在。我们表明,树的统计,分别的信息传播过程中,是非常敏感的用户所表现出的输入输出度的相关性。我们还了解到,给定的信息,例如,一个谣言,将需要用户超过30个小时,以覆盖系统的宏观部分。我们的分析表明,底层社会网络的拓扑节点相关性在允许信息环存在的同时,也促进了信息的传播。时间相关性以及因果关系效应只能作为局部现象在短时间尺度内可见。这些结果是通过理论和数据分析技术相结合而获得的。

英文摘要:

Without having direct access to the information that is being exchanged, traces of information flow can be obtained by looking at temporal sequences of user interactions. These sequences can be represented as causality trees whose statistics result from a complex interplay between the topology of the underlying (social) network and the time correlations among the communications. Here, we study causality trees in mobile-phone data, which can be represented as a dynamical directed network. This representation of the data reveals the existence of super-spreaders and super-receivers. We show that the tree statistics, respectively the information spreading process, are extremely sensitive to the in-out degree correlation exhibited by the users. We also learn that a given information, e.g., a rumor, would require users to retransmit it for more than 30 hours in order to cover a macroscopic fraction of the system. Our analysis indicates that topological node-node correlations of the underlying social network, while allowing the existence of information loops, they also promote information spreading. Temporal correlations, and therefore causality effects, are only visible as local phenomena and during short time scales. These results are obtained through a combination of theory and data analysis techniques.

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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