Structure and tie strengths in mobile communication networks
Structure and tie strengths in mobile communication networks
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DOI：
10.1073/pnas.0610245104
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发表时间：
2007-05-01
影响因子：
11.1
通讯作者：
Barabasi, A.-L.
中科院分区：
文献类型：
--
作者：
Onnela, J.-P.;Saramaki, J.;Barabasi, A.-L.
电子数据库，从电话到电子邮件日志，目前提供了人类通信模式的详细记录，为绘制和探索社会和通信网络的结构提供了新的途径。在这里，我们研究了数以百万计的移动的电话用户的通信模式，使我们能够同时研究本地和全球结构的社会范围内的通信网络。我们观察到相互作用的强度和网络的局部结构之间的耦合，与反直觉的后果，社交网络是强大的删除强关系，但崩溃后的相变，如果弱关系被删除。我们发现，这种耦合显着减缓扩散过程，导致在社区中的动态捕获的信息，并发现，当涉及到信息扩散，弱和强的关系都是同时无效的。
Electronic databases, from phone to e-mails logs, currently provide detailed records of human communication patterns, offering novel avenues to map and explore the structure of social and communication networks. Here we examine the communication patterns of millions of mobile phone users, allowing us to simultaneously study the local and the global structure of a society-wide communication network. We observe a coupling between interaction strengths and the network's local structure, with the counterintuitive consequence that social networks are robust to the removal of the strong ties but fall apart after a phase transition if the weak ties are removed. We show that this coupling significantly slows the diffusion process, resulting in dynamic trapping of information in communities and find that, when it comes to information diffusion, weak and strong ties are both simultaneously ineffective.