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Re: [igraph] weighted edge.betweenness.community

From: Tamás Nepusz
Subject: Re: [igraph] weighted edge.betweenness.community
Date: Wed, 18 Apr 2012 17:45:57 +0200


The nightly snapshot includes a function for weighted edge betweenness 
calculation, but this has not been incorporated into the edge betweenness-based 
community detection algorithm. See the following bug:


I guess it wouldn't be too hard to re-implement the community detection 
algorithm yourself by simply calling edge.betweenness in every step to 
calculate the edge betweenness scores while considering weights.

All the best,

On Wednesday, 18 April 2012 at 17:37, R N wrote:

> > Dear all,
> > After installing the nightly snapshot
> > (igraph.googlecode.com/files/igraph_nightly_0.6-2651-20120316.tar.gz 
> > (http://igraph.googlecode.com/files/igraph_nightly_0.6-2651-20120316.tar.gz)),
> > I saw that the edge.betweenness function uses weights. Furthermore,
> > the function has the option of considering directed or undirected
> > graphs. It is PERFECT! Thanks, guys! And congrats!
> > All the best,
> > Charles
> Sorry for disturbing again, but I looked in the sources (the file
> igraph-0.6/src/community.c) and
> couldn't find any mention of edge weights in the functions related to
> edge betwenness; moreover,
> in calling 'igraph_modularity', it explicitly passes 0 instead of the
> weights vector. Did I overlook something?
> Can edge_betweenness actually use edge weights?
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