***** To join INSNA, visit http://www.insna.org ***** Ulrich, et al. Hal and Paul wrote their recommender systems article a long time ago, when people were more positive and less cynical about manipulation of such systems.* What's the latest research? *Note that Hal may have been the only non-cynical economist;-) Valdis Krebs is right: it's easy to spoof many systems. The ones I have been wondering about are YouTube, where "favorites" always seem to include atonal young teens: singing, or stripping or both. I may be naive, but I cannot believe that "cutie costume" or "my chemical romance on new year's eve" -- both favorites at this moment -- really are getting 100s, 1000s, and even tens of 1000s of votes. Copying to the Communication & Info Tech section of the ASA, for their interest and input. Barry Wellman _____________________________________________________________________ Barry Wellman S.D. Clark Professor of Sociology NetLab Director Centre for Urban & Community Studies University of Toronto 455 Spadina Avenue Toronto Canada M5S 2G8 fax:+1-416-978-7162 wellman at chass.utoronto.ca http://www.chass.utoronto.ca/~wellman for fun: http://chass.utoronto.ca/oldnew/cybertimes.php _____________________________________________________________________ On Tue, 2 Jan 2007, SOCNET automatic digest system wrote: > Date: Tue, 2 Jan 2007 00:00:24 -0500 > From: SOCNET automatic digest system <[log in to unmask]> > Reply-To: Social Networks Discussion Forum <[log in to unmask]> > To: [log in to unmask] > Subject: SOCNET Digest - 31 Dec 2006 to 1 Jan 2007 (#2007-2) > > Date: Mon, 1 Jan 2007 20:54:28 +0100 > From: Ulrik Brandes <[log in to unmask]> > Subject: Re: "People who viewed this item also viewed..." "People who bought this item also bought..." > > ***** To join INSNA, visit http://www.insna.org ***** > > On Sun, Dec 31, 2006 at 03:19:55PM -0500, Valdis Krebs wrote: > > Been doing that for years, Bill... > > > > http://www.orgnet.com/booknet.html [1999!] > > > > > > On Dec 31, 2006, at 2:05 PM, Bill.Richards wrote: > > >An interesting approach to gathering network data? > > > > > >http://www.aggregateknowledge.com/index.html > > While I think Bill was referring to a particular data collection method, > for those interested in principles and techniques I'd recommend [sic] > to start looking at the vast literature on "recommender systems," or > "collaborative filtering" as a variant was called in 1992. > > An easy starter, cited several hundred times since, is > > Paul Resnick and Hal R. Varian > Recommender systems > Communications of the ACM 40(3):56-58, 1997 > ACM Press > > Best regards, > > B. > > _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.