Reputation Systems

 

People                          Publications                         Funding

 

                       


Our purpose

 

To navigate the complex web of information and agents on the Internet, society has come to rely on automated systems that aggregate opinions to assess reputation.  The Reputation Systems Group at Stanford develops concepts, algorithms, and protocols to provide a foundation for the systematic design of effective reputation systems.

 

 

 

 

People

 

Faculty:

Ashish Goel

Ramesh Johari

Benjamin Van Roy

Richard Zeckhauser (Harvard)

 

Students:

Christina Aperjis

Rajat Bhattacharjee

Michael Gucwa

Kahn Mason (graduated)

Ciamac Moallemi

Brad Null

Xiang "Robbie" Yan

Hui Zhang (USC - graduated)

 

 

 

 

Publications

 

·         Reputation Markets. Xiang Yan and Benjamin Van Roy. To appear in Proceedings of ACM SIGCOMM 2008, Workshop on the Economics of Networks, Systems, and Computation.

 

 

·         A Peer-to-Peer System as an Exchange Economy. Christina Aperjis and Ramesh Johari. Workshop on Game Theory for Networks; Pisa, Italy. October 2006

 

 

·         Incentive Based Ranking Mechanisms. Rajat Bhattacharjee and Ashish Goel. First Workshop on the Economics of Networked Systems (NetEcon06); Ann Arbor, Michigan.

 

 

·         Eliciting Informative Feedback: The Peer-Prediction Method.  Nolan Miller, Paul Resnick, and Richard J. Zeckhauser. Management Science, forthcoming. 

 

 

·         Consensus Propagation. Ciamac C. Moallemi and Benjamin Van Roy.

 

 

·         Detecting Colluders in PageRank - Finding Slow Mixing States in a Markov Chain. Kahn Mason. Doctoral Dissertation, Department of Management Science and Engineering, Stanford University. September 2005. 

 

 

·         Avoiding Ballot Stuffing in eBay-like Reputation Systems. R. Bhattacharjee and A. Goel. Third Workshop on the Economics of Peer-to-Peer Systems, Philadelphia, PA. August 2005.

 

 

·         A Discussion of Click-Through Algorithms for Web Page Ranking. B. Null. A tutorial project advised by A. Goel. May 2005.

 

 

·         Improving Eigenvector-Based Reputation Systems Against Collusion. H. Zhang, A. Goel, R. Govindan, K. Mason, and B. Van Roy. Workshop on Algorithms and Models for the Web Graph (WAW). October 2004.

 

 

·         The Design of a Distributed Rating Scheme for Peer-to-Peer Systems. D. Dutta, A. Goel, R. Govindan, and H. Zhang. Workshop on Economic Issues in Peer-to-Peer Systems, Berkeley, CA. June 5-6, 2003.

 

 

 

Funding

 

NSF ITR: Axioms and Algorithms for Reputation