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arXiv 1104.0923physics.soc-phcs.SI
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网络中的有序社团结构

Ordered community structure in networks

Steve Gregory

摘要:

网络中的社区结构通常是基于顶点的某些属性的同质性或竞争性混合的结果。例如,研究人员可以被分组到与他们的研究主题相对应的社区中。如果顶点属性具有离散值,则这是可能的,但是许多网络通过一些连续值属性(例如年龄或地理位置)表现出连续混合。在这种情况下,无法确定离散的社区。我们考虑如何将社区结构的概念推广到基于连续值属性的网络:一般来说,网络可能包含根据其属性值排序的离散社区。我们提出了一种生成有序网络的方法,并研究了有序社区结构对传染病传播的影响。我们还表明,社区检测算法无法恢复有序网络中的社区结构,并评估一种替代方法,使用布局算法来恢复排序。

英文摘要:

Community structure in networks is often a consequence of homophily, or assortative mixing, based on some attribute of the vertices. For example, researchers may be grouped into communities corresponding to their research topic. This is possible if vertex attributes have discrete values, but many networks exhibit assortative mixing by some continuous-valued attribute, such as age or geographical location. In such cases, no discrete communities can be identified. We consider how the notion of community structure can be generalized to networks that are based on continuous-valued attributes: in general, a network may contain discrete communities which are ordered according to their attribute values. We propose a method of generating synthetic ordered networks and investigate the effect of ordered community structure on the spread of infectious diseases. We also show that community detection algorithms fail to recover community structure in ordered networks, and evaluate an alternative method using a layout algorithm to recover the ordering.

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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