I am considering this small directed graph.
The results score node 1 as the dominate hub and the rest of the nodes with
value 0 (i.e., no' hubness'). This seems odd to me. For example, node 2,
has outlinks to 3 different nodes (1,4, and 7). So, I would expect it to
have some relative level of hubness.
> g <- graph.empty()
> g <- g+vertices(1,2,3,4,5,6,7)
> g <- g+edge("1","2")
> g <- g+edge("1","3")
> g <- g+edge("1","5")
> g <- g+edge("1","6")
> g <- g+edge("2","1")
> g <- g+edge("2","4")
> g <- g+edge("3","1")
> g <- g+edge("5","1")
> g <- g+edge("2","7")
> E(g)
Edge sequence:
[1] 1 -> 2
[2] 1 -> 3
[3] 1 -> 5
[4] 1 -> 6
[5] 2 -> 1
[6] 2 -> 4
[7] 3 -> 1
[8] 5 -> 1
[9] 2 -> 7
> hub.score(g,scale=FALSE)$vector
1 2 3 4 5 6 7
0.5733822 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000
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