Authors: Dimitri DeFigueiredo / Earl Barr
Tuesday, June 14, 2005
1131 Kemper Hall
2 :10-3:00 p.m.
Abstract:
Have you ever been affraid of buying goods online at eBay? Would you trust
a seller's reputation ratings on eBay?
We present TrustDavis, an online reputation system that provides insurance
against trade fraud by leveraging existing relationships between players,
such as the ones present in social networks (friendster, orkut, etc).
Using TrustDavis and a simple strategy, an honest player can set an upper
bound on the losses caused by *any malicious collusion* of players. In
addition, TrustDavis incents participants to accurately rate each other,
resists participants' pseudonym changes, and is inherently distributed.