Title: Reputation systems I

		  Yury Liftshits
    Center for the Mathematics of Information
       California Institute of Technology

ABSTRACT: 

Reputation systems help online communities in many ways:
 - search (relevance)
 - trust (decision making)
 - motivating contribution (wiki, reviews)
 - keeping users engaged (WoW, slashdot)
 - anti-spam (email, social news)

In the first lecture we review several reputation systems:
 - websites and hyperlinks (HITS, PageRank, Salsa)
 - e-commerce (eBay)
 - peer-to-peer networks (EigenTrust)
 - contribution (Yahoo Answers, Wikipedia)
 - social networks (VKontakte)