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[igraph] bug in Graph.community_leading_eigenvector?

From: Kurt J
Subject: [igraph] bug in Graph.community_leading_eigenvector?
Date: Mon, 24 Mar 2008 16:24:42 +0000


Using igraph 0.5 in python 2.5 in osx 10.4, i'm running the leading_eigenvector community detection method and I get the following warning:
/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/python_igraph-0.5-py2.5-macosx-10.3-fat.egg/igraph/__init__.py:494: RuntimeWarning: Maximum number of ARPACK iterations reached at community.c:1166

Using igraph 0.4.5 in python 2.4 i get no warning.  The results seem to vary considerably.

v0.4.5 -> 596 communities
v0.5 -> 94 communities (and error message)

-Kurt J

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