Hostname: page-component-6766d58669-r8qmj Total loading time: 0 Render date: 2026-05-22T06:34:48.345Z Has data issue: false hasContentIssue false

Focus statistics for testing network centrality on uncorrelated random graphs

Published online by Cambridge University Press:  28 December 2016

TAI-CHI WANG
Affiliation:
National Center for High-Performance Computing, Hsinchu City 300, Taiwan (e-mail: taichi43@stat.sinica.edu.tw)
FREDERICK KIN HING PHOA
Affiliation:
Institute of Statistical Science, Academia Sinica, Taipei 115, Taiwan (e-mail: fredphoa@stat.sinica.edu.tw)

Abstract

Network centrality has been addressed for more than 30 years; however, few studies provided statistical tests for verifying this network characteristic. By applying the idea of focus test in spatial analysis, we propose a statistical method to test the centrality of a network. We consider not only the degree of node, but also give weights on other nodes with different lengths of the shortest paths, which are called “distances” in networks. According to the density of distance based on the hidden variable model and the property of the multinomial distribution, a test statistic called “focus centrality” is provided to evaluate a network centrality. Besides the theoretical construction, we verify that the proposed method is feasible and effective in the simulation studies. Further, two empirical network data are studied as demonstrations.

Information

Type
Research Article
Copyright
Copyright © Cambridge University Press 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable