DescriptionTrust and reputation systems have proven to be essential to enforcing cooperative behavior in peer-to-peer networks. In this research we explore approaches to building reputation systems based on social networks formation, probabilistic estimation, and game theoretic models.
Updated February 16, 2009.
 K. Aberer, Z. Despotovic, " Managing Trust in a Peer-2-Peer Information System ", Proceedings of the Ninth International Conference on Information and Knowledge Management (CIKM 2001), Atlanta, Georgia, 2001.
 Z. Despotovic, K. Aberer, " Trust-Aware Delivery of Composite Goods ", International Workshop on Agents and Peer-To-Peer Computing (AP2PC 2002), Bologna, Italy, 2002.
 Z. Despotovic, K. Aberer, M. Hauswirth: " Trust-Aware Cooperation ", International Workshop on Mobile Teamwork, Vienna, 2002.
 Z. Despotovic, K. Aberer: Maximum Likelihood Estimation of Peers' Performance in P2P Networks. The Second Workshop on the Economics of Peer-to-Peer Systems, Harvard University, Cambridge, MA, USA, June 2004.
 Z. Despotovic, J.-C. Usunier, K. Aberer: "Towards Peer-to-Peer Double Auctioning", Proceedings of the 37th International Hawaiian Conference on System Sciences, Maui, USA, 2004.
 Z. Despotovic, K. Aberer: "A Probabilistic Approach to Predict Peers' Performance in P2P Networks", (best paper award) International Workshop on Cooperative Information Agents, CIA 2004, September 27 - 29, 2004, Erfurt, Germany.
 K. Aberer, P. Cudré-Mauroux, Z. Despotovic, "On the Convergence of Structured Search, Information Retrieval and Trust Management in Distributed Systems", (invited paper) Third German Conference on Multi-Agent System Technologies (MATES), Koblenz, September 11-13, 2005.
 Le-Hung Vu, M. Hauswirth , K. Aberer, "QoS-based Service Selection and Ranking with Trust and Reputation Management", 13th International Conference on Cooperative Information Systems (CoopIS 2005), Agia Napa, Cyprus, Oct 31 - Nov 4, 2005.
 Le-Hung Vu, M. Hauswirth, K. Aberer, "Towards P2P-based semantic web service discovery with QoS supports", Workshop on Business Processes and Services (BPS), In conjunction with the 3rd International Conference on Business Process Management, Nancy, France, 5 September 2005.
 Z. Despotovic, K. Aberer: "Probabilistic Prediction of Peers' Performances in P2P Networks", International Journal of Engineering Applications of Artificial Intelligence", Elsevier, 2005.
 Z. Despotovic, K. Aberer: "P2P Reputation Management: Probabilistic Estimation vs. Social Networks", Journal of Computer Networks, Special Issue on Management in Peer-to-Peer Systems: Trust, Reputation and Security, Elsevier, 50(4): 485-500, 2006.
 K. Aberer, Z. Despotovic, W. Galuba and W. Kellerer, "The Complex Facets of Reputation and Trust", 9th Fuzzy Days, International Conference on Computational Intelligence Fuzzy Logic Neural Networks Evolutionary Algorithms, Dortmund, Germany, September 18 - 20, 2006.
 Le-Hung Vu, M. Hauswirth, F. Porto, and K. Aberer: "A Search Engine for QoS-enabled Discovery of Semantic Web Services", International Journal of Business Process Integration and Management (Inderscience Publishers), 2007.
class="style1"> W. Galuba, K. Aberer, Z. Despotovic, W. Kellerer: "Authentication-free fault-tolerant peer-to-peer service provisioning", The 5th International Workshop on Databases, Information Systems and Peer-to-Peer Computing (DBISP2P 2007), Vienna, Austria, September 2007.
 L.-H. Vu and K. Aberer, A Probabilistic Framework for Decentralized Management of Trust and Quality , Eleventh International Workshop on Cooperative Information Agents (CIA 2007), 2007.