Re: [igraph] Newman's clustering failing [Python]

[Pagliari, Roberto]

Hi Gabor,
Thank you for the quick feedback. 

So I guess for now there is no fix, right? I saw those other messages, but I 
could not find anyone confirming bug fixes.

Thank you,

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Gábor Csárdi
Sent: Thursday, July 17, 2014 12:49 PM
To: Help for igraph users
Subject: Re: [igraph] Newman's clustering failing [Python]

YEs, a bunch of people get issues with ARPACK, just search for ARPACK in the 
issue tracker.

Gabor

On Thu, Jul 17, 2014 at 12:46 PM, Pagliari, Roberto <address@hidden> wrote:
> I’m testing the leading eigenvector method for community detection.
>
>
>
> ·         I tested it with a bipartite weighted graph.
>
> ·         Weights are all real numbers in (0, 1]
>
> ·         I created the graph without using the specific function for
> creating bipartite graphs.
>
> ·         The number of nodes and edges is fairly small (order of 100) so I
> don’t think that should be an issue.
>
>
>
> I am getting this error, due to arpack not converging. Did anyone else 
> see this issue?
>
>
>
> /usr/lib/python2.6/site-packages/python_igraph-0.7-py2.6-linux-x86_64.egg/igraph/__init__.py:1047:
> RuntimeWarning: ARPACK solver failed to converge (3001 iterations, 0/1 
> eigenvectors converged) at arpack.c:776
>
>   membership, _, q = GraphBase.community_leading_eigenvector(self, 
> clusters,
> **kwds)
>
>
>
> Thank you,
>
>
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