A corollary to betweenness, betweenness centrality suggests a way to determine how otherwise unassociated networks or individuals share a common link that allows for communication between them. Where two different networks interact—for example, if the star network and the circle network had a shared connection—measures of betweenness centrality indicate how those two groups are linked and provide information on the “heterogeneity or variability of betweenness in the entire set of actors.”
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