Re: [igraph] computing betweenness for weighted network

[Szabolcs Horvát]

I didn't know about Nexus.  Is it still being maintained?

On 4 May 2016 at 15:25, Tamas Nepusz <address@hidden> wrote:
> Hi,
>
>> I would like to compute the betweenness centrality of the weighted zachary
>> karate club.
>> [...]
>> I would like to have the same result as in this paper
>
> You did not mention how did you obtain the Zachary karate club
> network. If you simply ran this:
>
> g = Graph.Famous("zachary")
>
> then it's no good because this generates the _unweighted_ Zachary
> karate club network.
>
> However, you could download the weighted version of the network from
> the Nexus graph repository (http://nexus.igraph.org) with the
> following command:
>
> g = Nexus.get("karate")
> g.betweeness(weights="weight")
>
> Then you would get slightly different results that are somewhat closer
> to the results reported in that paper. They are still not the same,
> but I cannot know whether it's due to the fact that the version of the
> network in Nexus is different from the network that the authors have
> used in that paper, or because something is wrong either in our
> calculations or theirs.
>
> T.
>
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