Knut-Helge Vik successfully defended his PhD thesis
On Monday 18 May, Knut-Helge Vik successfully defended his PhD thesis Group Communication Techniques in Overlay Networks. In online services such as audio/video conferencing or online games, where people interact in real-time, it is crucial that the latency in communication is as low as possible. Vik's work identifies communication techniques particularly suitable in such applications.
Knut-Helge Vik
One type of Internet services that have recently gained much attention are services that enable people around the world to communicate in real-time. Such services of real-time interaction are offered by applications most commonly referred to as distributed interactive applications. A time-dependent requirement generally applies to all distributed interactive applications that aim to support real-time interaction, and is usually in terms of a few hundred milliseconds.
One general focal point in Vik's thesis is to enable scalable group communication for managing dynamic groups of clients that interact in real-time. The desire is to enable people around the world to dynamically join networks of participants and interact with them in real-time.
The main contributions of the thesis are a number of investigations of a wide variety of group communication techniques. The results from Vik's investigations identifiy the techniques that are particularly suitable for distributed interactive applications.
Prior to the defence, Vik presented his trial lecture Performance Evaluation Methods for P2P Overlays.
The adjudication committee
Associate Professor Roger Zimmermann, School of Computing, National University of Singapore.
Lecturer Utz Roedig, InfoLab21, Lancaster University.
Associate Professor Roman Vitenberg, Department of Informatics, University of Oslo.
Chair of the disputation
Arne Maus
Supervisors
Paal Halvorsen og Carsten Griwodz
