have a look for more answers at:
[Bug 1123003] setting options parameter in page.rank causes arpack error
(https://bugs.launchpad.net/igraph/+bug/1123003)
best regards
Am Montag, 11. Februar 2013 17:38:25 UTC+1 schrieb [email protected]:
>
> ...
> > myoptions <- igraph.arpack.default
> > myoptions$maxiter <- 1
> > pr <- page.rank(g, options=myoptions)
> Fehler in page.rank(g, options = myoptions) :
> At arpack.c:1126 : ARPACK error, The Schur form computed by LAPACK
> routine dlahqr could not be reordered by LAPACK routine dtrsen.
>
> I get this erro trying to manipulate the maximal iterations that the
> function should take for calculation.
> Any help, please?
>
> Am Montag, 11. Februar 2013 15:25:46 UTC+1 schrieb [email protected]
> :
>>
>> Hello,
>>
>> is it possible to apply another number of iterations the pagerank has to
>> take instead of the standard value of 3000 (options$maxiter in page.rank).
>> In the old pagerank (page.rank.old) you can give the niter parameter when
>> calling the function. That way i would like to use the newer pagerank
>> function page.rank. I want use the new page.rank because there you can
>> calculate pagerank with preference vetctor or weightes vector… this is not
>> possible with the old pagerank in igraph.
>>
>> I need to calculate pagerank for dbpedia-entries with about 130 *10^6
>> edges and 18*10^6 vertices.
>>
>> I hope someone can help this way.. best regards
>>
>
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