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I have used the Nutch open-source webcrawler (nutch.apache.org) in the
past and then exported the links from crawls to R and used the igraph
package for SNA analysis.  If you don't need to customize anything
about the crawler, this wouldn't require any programming on your
student's part.  Your student is right that there aren't any crawlers
that would export things in a SNA-specific way.  At least, I don't
know of any.  Your student will have to massage the data a bit.

Brian Ulicny, PhD
Sr. Scientist
VIStology, Inc.
Framingham, MA 01701
USA

2011/3/31 GULYÁS László <[log in to unmask]>:
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>
> Dear All,
>
> I have a student who wants to study the world wide web. I told him that I
> have the feeling that there should be many crawlers out there already, but
> he got back to me that he could not find any really applicable (i.e., that
> could directly output in a format suitable for SNA).
>
> Do you have any suggestions here?
>
> Thanks in advance!
>
> Best regards,
>
> -- Laszlo
> --
> Laszlo Gulyas, PhD
> Collegium Budapest
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