Centrality is an important notion in network analysis and is used to measure the degree to which network structure contributes to the importance of a node in a network. In this paper, node centrality measures of telecommunication network are calculated in four different approaches. And it is found out that the four centrality measures are significant correlated with edge counts. We also discuss the usability of centrality measures in node ranking, and suggest that centrality measures can be useful indicators for network analysis.
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