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Re: [igraph] betweenness centrality -- negative and floating values?

From: Tamas Nepusz
Subject: Re: [igraph] betweenness centrality -- negative and floating values?
Date: Mon, 15 Jun 2009 11:14:47 +0100
User-agent: Mutt/1.5.17 (2007-11-01)

> However, for my other network data, BC seems very easily to overflow.
> For instance, in the case of 4000 nodes which is not a so large
> network. I suggest that you should find some other solutions (probably
> the final) for this problem overflow/negative values, etc.
Yes. you're right, this is meant to be a temporary solution only (that's
why I didn't close the bug report yet). The proper solution would be
either to use a bignum library or avoid counting the geodesics
explicitly (since we only need a ratio of two geodesic counts in the
end). We will have to think about it, though. 


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