Dataroots, Datarootsresearch, Machinelearning, Data.
Heather appears 2 * 7 = 14 times on the shortest path between node pairs. Standardising this, we divide by (10–2)*(10–1)/2 = 36 ultimately leading to a betweenness value of 0.389. Accordingly, Carol, Ed and Jane never occur on a shortest path and hence will have the lowest betweenness centrality