and Mark Smith, at Microsoft Research runs Netscan, which tracks newsgorup
activity in the aggregate.

 Barry
 ___________________________________________________________________

  Barry Wellman Professor of Sociology NetLab Director
  [log in to unmask] http://www.chass.utoronto.ca/~wellman

  Centre for Urban & Community Studies University of Toronto
  455 Spadina Avenue Toronto Canada M5S 2G8 fax:+1-416-978-7162
 ___________________________________________________________________

On Fri, 12 Apr 2002, Rafal Rohozinski wrote:

> Date: Fri, 12 Apr 2002 12:21:22 -0400
> From: Rafal Rohozinski <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: Is anybody doing research on newsgroups?
>
> Hi Bettina,
>
> You may want to check out warren Sack's work (Berkeley) which deals
> with mapping of large scale conversations (newsgroups). His web site
> can be found at http://www.sims.berkeley.edu/~sack/cm/index.html
>
> Rafal Rohozinski
> University of Cambridge
>
>
>
> At 17:37 +0200 12.04.02, Bettina Hoser wrote:
> >Hi
> >I am doing research ( for my PhD) on mathematical models for online
> >communities, esp. newsgroups. My starting point has been Jon Kleinberg
> >"Authoritative sources in a hyperlinked environment". From there I have
> >now travelled all the way to Barry Wellman "Computer Networks as social
> >Networks" and also to William Richards "Eigen Analysis of Networks".
> >My question now is: are there any other concepts in finding "authorities
> >and hubs" or experts and activists by using only mathematical concepts
> >such as Eigen Analysis of adjacency matrices?
> >Secondly: Where can I find papers concerning this topic?
> >My long term objective is to describe life, evolution (and maybe death)
> >of newsgroup by non-invasive-methods,e.g. without the need to explicitly
> >ask the newsgroup, just by listening, and without using personilzed
> >information.
> >Every information is highly appreciated.
> >Best regards,
> >Bettina
> >
> >--
> >Dipl.-Phys. Bettina Hoser
> >Lehrstuhl für Informationsdienste und elektonische Märkte
> >Fakultät für Wirtschaftswissenschaften
> >Universität Karlsruhe (TH)
> >76128 Karlsruhe
> >
> >email: [log in to unmask]
> >Tel: 0721-608 8407
> >Fax: 0721-608 8403
>