Title: A Peer-to-Peer Large-scale Collaboration Network
Author: Thomas Bocek
e-mail: bocek@ifi.uzh.ch
Partner: UniZH
Supervisor: Prof. Dr. Burkhard Stiller
Committee: Prof. Dr. Burkhard Stiller, NN
Year of start: 2005
Year of end: 2008
Funding institution: University of Zurich, IFI

The aim of the PhD thesis is the development and analysis of a fully decentralized large-scale collaboration network. Collaboration networks require new algorithms to provide decentralized control and deal with misbehaving peers. Thus, the network is designed to be robust, scalable, and to provide incentive schemes against malicious peers and resource over usage. Key aspects to take into account in those algorithms are resource trading and human interaction, such as reviewing and voting. An example application of such a network enables storage, search, retrieval, and manipulation of documents in a large network. Control mechanisms, such as reviewing and voting for or against modified documents by other peers identify and exclude misbehaving peers.

The following four key topic are addressed in this thesis:

* Incentive schemes for P2P collaboration networks * Similarity search algorithm for searching documents * Decentralized voting algorithms * Extending existing P2P storage with incentive schemes, similarity searches and decentralized voting.

1. Thomas Bocek, Ela Hunt, David Hausheer, Burkhard Stiller: Fast Similarity Search in Peer-to-Peer Networks. 11th IEEE/IFIP Network Operations and Management Symposium (NOMS 2008), Salvador, Brazil, April 2008.
2. Thomas Bocek, Mike Shann, David Hausheer, Burkhard Stiller: Game Theoretical Analysis of Incentives for Large-scale, Fully Decentralized Collaboration Networks. Fifth International Workshop on Hot Topics in Peer-to-Peer Systems, Miami, Florida, USA, April 2008
3. Thomas Bocek, Burkhard Stiller: Peer-to-Peer Large-scale Collaborative Storage Networks. AIMS 2007 / Autonomous Infrastructure, Management and Security (Student Paper), pages 1-4, Oslo, Norway, June 2007.
4. Thomas Bocek, David Hausheer, Reinhard Riedl, Burkhard Stiller: Introducing CPU Time as a Scarce Resource in P2P Systems to Achieve Fair Use in a Distributed DNS. 9th IEEE Global Internet Symposium 2006, pages 1-6, Barcelona, Spain, April 2006.