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Ilkka Norros

Current position at VTT

Research professor, Stochastic systems

Research background and current research topics

Probability theory in many flavours and application contexts:

  • reliability theory: dependent components, network reliability
  • point processes: martingale dynamics
  • queueing theory: queues in communication devices and systems
  • Gaussian processes: Gaussian teletraffic modelling, fractional Brownian motion
  • random graphs: power-law graphs as models for large networks
  • stability of Markov processes: analysis of peer-to-peer algorithms
  • stochastic geometry: fractality of population distributions, spatial stochastic models
  • statistics: analysis of teletraffic, road traffic accidents, electricity consumption

Current major research projects at VTT

Homepage of projects on network dependability: http://iplu.vtt.fi.

Education

Doctor of Philosophy University of Helsinki, Department of Mathematics, 1986
Licentiate of Philosophy University of Helsinki, Department of Mathematics, 1978
Master of Philosophy University of Helsinki, Department of Mathematics, 1975.

Work history

VTT Technical Research Centre of Finland: senior research scientist 1988-1997, research professor 1997-
University of Helsinki, Department of Mathematics: docent in applied mathematics 1992-
University of Helsinki, Department of Mathematics: assistant 1979-1988

Positions of trust and professional assignments

Co-leader of Seminar of stochastic models at University of Helsinki
Associate Editor of Queueing Systems
Area Editor of Computer Communications
Deputy board member of The Finnish Graduate School in Stochastics and Statistics
Deputy board member of Technology for Life

Selected publications

F. Baccelli, F. Mathieu, I. Norros and R. Varloot. Can P2P networks be super-scalable? INFOCOM 2013.

P. Cholda, E.L. Følstad, B.E. Helvik, P. Kuusela, M. Naldi and I. Norros. Towards risk-aware communications networking. Reliability Engineering and System Safety 109, 160 – 174, 2013.

I. Norros, H. Reittu and T. Eirola. On the stability of two-chunk file-sharing systems. Queueing Systems 67:3, 183-206, 2011.

I. Norros and H. Reittu. Network models with a 'soft hierarchy': a random graph construction with loglog scalability. IEEE Network 22:2, 40-46, 2008.

P. Mannersalo and I. Norros. A most probable path approach to queueing systems with general Gaussian input. Computer Networks 40:3, 399 – 412, 2002.

For complete list of publications, see Ilkka Norros’s publications in VTT Publications Register.

Awards

Lindelöf prize for best master thesis in mathematics in 1975.


Additional information

Ilkka Norros
Research Professor
+358 20 722 5627

Additional information

Ilkka Norros
Research Professor
+358 20 722 5627