It doesn't look like betweenness centrality normalization is working. The result seems the same with and without normalization. I expected the solution to be 0,0,1 (after normalization by (n-1)*(n-2)).
> E(g) Edge sequence: [1] 0 -> 2 [2] 2 -> 0 [3] 1 -> 2 [4] 2 -> 1 > E(g)$weight [1] 0.3 0.2 0.1 0.3 > betweenness(g,v=V(g),directed=TRUE) 0 1 2 0 0 2 > betweenness(g,v=V(g),directed=TRUE,normalized=TRUE) 0 1 2 0 0 2
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