Abstract

Eric Friedman: Manipulation and Efficiency of Reputation and Ranking Systems

Abstract

Reputation and ranking systems have become increasingly important, in applications ranging from websearching to mechanisms for reducing free riding in P2P systems. However, due to user manipulations (such as link spam and sybil attacks) many of these systems have been significantly compromised. In this talk I will discuss some recent work (theoretical and empirical) on the manipulability and efficiency of such systems and the potential for designing useful and robust reputation and ranking systems