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» Information technology as social phenomenon
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WWW
2009
ACM
14 years 7 months ago
Bid optimization for broad match ad auctions
Ad auctions in sponsored search support"broad match"that allows an advertiser to target a large number of queries while bidding only on a limited number. While giving mo...
Eyal Even-Dar, Vahab S. Mirrokni, S. Muthukrishnan...
WWW
2008
ACM
14 years 7 months ago
Online auctions efficiency: a survey of ebay auctions
Online auctions have become a pervasive transaction mechanism for e-commerce. As the largest online marketplace in the world, eBay is an attractive case study that enables the stu...
Wenyan Hu, Alvaro Bolivar
WWW
2008
ACM
14 years 7 months ago
Knowledge sharing and yahoo answers: everyone knows something
Yahoo Answers (YA) is a large and diverse question-answer forum, acting not only as a medium for sharing technical knowledge, but as a place where one can seek advice, gather opin...
Lada A. Adamic, Jun Zhang, Eytan Bakshy, Mark S. A...
WWW
2007
ACM
14 years 7 months ago
The complex dynamics of collaborative tagging
The debate within the Web community over the optimal means by which to organize information often pits formalized classifications against distributed collaborative tagging systems...
Harry Halpin, Valentin Robu, Hana Shepherd
WWW
2006
ACM
14 years 7 months ago
Invisible participants: how cultural capital relates to lurking behavior
The asymmetry of activity in virtual communities is of great interest. While participation in the activities of virtual communities is crucial for a community's survival and ...
Vladimir Soroka, Sheizaf Rafaeli