Corvinus
Corvinus

Measuring centrality by a generalization of degree

Csató, László (2015) Measuring centrality by a generalization of degree. Working Paper. Corvinus University of Budapest Faculty of Economics, Budapest.

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Abstract

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 in a network, 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 favorable attributes of degree, but better reflects the role of the nodes in the network and has an increased ability to distinguish between their importance.

Item Type:Monograph (Working Paper)
Series Name:Corvinus Economics Working Papers - CEWP
Series Number / Identification Number:2015/02
Uncontrolled Keywords:networks, centrality measures, degree, axiomatic approach
JEL classification:D85 - Information, Knowledge, and Uncertainty: Network Formation and Analysis: Theory
Subjects:Mathematics, Econometrics
Funders:SYLFF The Ryoichi Sasakawa Young Leaders Fellowship Fund
Projects:MTA-BCE "Lendület" Strategic Interactions Research Group, OTKA K111797
ID Code:1846
Deposited By: Ádám Hoffmann
Deposited On:02 Feb 2015 11:59
Last Modified:23 Feb 2015 11:39

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