Five Years On–An Overview of P2P Research in Delft

Sunday, October 11, 2009 - 11:11am


3:30 – 4:30
Computer Science Conference Room, Harold Frank Hall Rm. 1132

HOST: Ben Zhao

SPEAKER: Dick H.J. Epema
Computer Science, Delft University of Technology, Netherlands


Five Years On–An Overview of P2P Research in Delft


What started in 2004 with what is probably still the largest measurement
effort of BitTorrent at a time when most of the P2P research community
still concentrated on Distributed Hash Tables, has grown into a wide
portfolio of research into video distribution through P2P systems in
the widest sense of the word. In this talk, an overview will be
presented of this research, ranging from epidemic protocols for peer and
content discovery to modeling inhomogeneous swarm-based systems, from
cooperative downloading to modeling the impact of firewalls, and from
extending BitTorrent for video-on-demand to assessing the benefit of
superpeers. All of this research is centered around the BitTorrent-based
client Tribler (, which is being developed in Delft and
which acts as the research vehicle for this work.


Dick H.J. Epema received his MSc degree in mathematics with a minor in
Spanish and his PhD degree in algebraic geometry from Leiden University
in the Netherlands in 1979 and 1983, respectively. Since 1984, he has
been with the Department of Computer Science of Delft University of
Technology, where he is currently an associate professor in the Parallel
andDistributed Systems Group. During the academic year 1987-1988, the
fall of 1991, and the summer of 1998, he was a visiting scientist at the
IBM T.J. Watson Research Center in Yorktown Heights, New York. In the
fall of 1992, he was a visiting professor at the Catholic University of
Leuven in Belgium. His research interests are in the general areas of
performance analysis and distributed systems, with a focus on grids and
peer-to-peer systems. He leads a research group in grids, centered
around the KOALA grid scheduler, and co-leads a research group in
peer-to-peer systems, centered around the Tribler peer-to-peer system.

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