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arXiv 1507.02103cs.SIphysics.soc-ph
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用度的推广度量中心性

Measuring centrality by a generalization of degree

László Csató

摘要:

网络分析已经成为传播学、经济学、地理学、历史学和社会学等领域的关键技术。一个根本问题是如何确定关键节点,为此目的,已经制定了一些中心性措施。本文提出了一种新的中心性测度参数族,称为广义度。它是基于这样一个想法,即与一个更相互联系的节点的关系比与一个不太中心的节点的关系更有助于中心性。广义度通过在网络上重新分配其和来提高度,并考虑全局结构。一组基本属性支持该度量的应用。给出了广义度秩单调的一个充分条件,排除了网络经过某些修改后中心度秩的反直觉变化。该度量具有图形解释,并且可以迭代计算。除了度之外,还建议应用广义度,因为它保留了度的最有利属性,但更好地反映了网络中节点的作用,并且具有更强的区分其重要性的能力。

英文摘要:

Network analysis has emerged as a key technique in communication studies, economics, geography, history and sociology, among others. A fundamental issue is how to identify key nodes, for which purpose a number of centrality measures have been developed. This paper proposes a new parametric family of centrality measures called generalized degree. It is based on the idea that a relationship to a more interconnected node contributes to centrality in a greater extent than a connection to a less central one. Generalized degree improves on degree by redistributing its sum over the network with the consideration of the global structure. Application of the measure is supported by a set of basic properties. A sufficient condition is given for generalized degree to be rank monotonic, excluding counter-intuitive changes in the centrality ranking after certain modifications of the network. The measure has a graph interpretation and can be calculated iteratively. Generalized degree is recommended to apply besides degree since it preserves most favourable attributes of degree, but better reflects the role of the nodes in the network and has an increased ability to distinguish among their importance.

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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