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arXiv physics/0611268physics.soc-ph
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学校友谊网络中的社区结构和种族偏好

Community structure and ethnic preferences in school friendship networks

M. C. Gonzalez, H. J. Herrmann, J. Kertesz, T. Vicsek

摘要:

最近发展起来的分析复杂系统的概念和技术为社交网络的结构提供了新的见解。揭示这种网络中的经常性偏好和组织原则是描述它们的关键问题。我们从Add Health数据库中调查了学校友谊网络。应用阈值分析,我们发现,友谊网络不形成一个单一的连接组件,通过学校内的相互强提名,而在较弱的条件下,这种相互连接是存在的。我们提取的网络的重叠社区在学校(c-网络),并发现它们是无标度和dispertative的直接友谊网络,具有指数度分布,是dispertative相反。基于网络分析,我们研究了友谊选择中的种族偏好。我们使用的集团渗透方法表明,当学生处于少数群体时,他们倾向于建立更紧密联系的朋友群体。我们还发现,在白人占多数的情况下,黑人少数群体的行为与白人少数群体在黑人占多数的情况下的行为存在不对称性。

英文摘要:

Recently developed concepts and techniques of analyzing complex systems provide new insight into the structure of social networks. Uncovering recurrent preferences and organizational principles in such networks is a key issue to characterize them. We investigate school friendship networks from the Add Health database. Applying threshold analysis, we find that the friendship networks do not form a single connected component through mutual strong nominations within a school, while under weaker conditions such interconnectedness is present. We extract the networks of overlapping communities at the schools (c-networks) and find that they are scale free and disassortative in contrast to the direct friendship networks, which have an exponential degree distribution and are assortative. Based on the network analysis we study the ethnic preferences in friendship selection. The clique percolation method we use reveals that when in minority, the students tend to build more densely interconnected groups of friends. We also find an asymmetry in the behavior of black minorities in a white majority as compared to that of white minorities in a black majority.

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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