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Denisa Gabriela Ghita
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Ph.D. Student
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office(s):
BC202
phone(s): [+41 21 69] 32648
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MISSION
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My focus is on making network tomography practical. Network tomography infers the characteristics of network links (e.g., loss rate, delay, congestion probability) from end-to-end measurements. Such inference can be a powerful monitoring tool when an operator wants to estimate the quality of links in her domain, or when an Internet service provider wants to evaluate the quality of service offered by a peer.
State-of-the-art research assumes network links are independent, yet there are practical scenarios when links are "correlated", i.e., the status of one link may dependent on the status of other links. We investigate how tomography can be applied to networks where links are correlated. Based on our theoretical results, we are building an Internet tomographer running on PlanetLab.
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BIOGRAPHY
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I am PhD student at Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland, working with Professor Patrick Thiran and Professor Katerina Argyraki.
I am part of the Laboratory for Computer Communications and Applications and of the Network Architecture Lab. I have graduated in 2006 from the Computer Science department of "Politehnica" University of Bucharest. My diploma thesis on trust negotiation in peer-to-peer networks was done in collaboration with the L3S Research Center, Germany. In the summer of 2007, I was an intern at Microsoft Research Cambridge , working on adaptive TCP for multipath routing.
For more details, see my Curriculum Vitae.
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MAIN PUBLICATIONS
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D. Ghita, C. Karakus, K. Argyraki, and P. Thiran.
Shifting Network Tomography Toward A Practical Goal.
In Proceedings of the ACM International Conference on
emerging Networking EXperiments and Technologies (CoNext), 2011.
[ Details |
Full Text ]
D. Ghita, K. Argyraki, and P. Thiran.
Network Tomography on Correlated Links.
In Proceedings of the ACM Internet Measurement
Conference (IMC), 2010.
[ Details |
Full Text ]
D. Ghita, H. Nguyen, M. Kurant, A. Argyraki, and P. Thiran.
Netscope: Practical Network Loss Tomography.
In Proceedings of the 29th IEEE Conference on Computer
Communications (INFOCOM), Ieee Infocom. Ieee Service Center, 445 Hoes
Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa, 2010.
[ Details |
Full Text |
Link ]
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Technical Reports
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Inference Algorithms Analysis , Technical Report 2011
Rethinking Boolean Network Tomography , Technical Report 2011
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Posters
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The Battle for Non-Independence in Network Tomography, presented at ECO2 Computing Day, June 2010
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Professional course
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Teaching Assistant, TCP/IP, EPFL, Fall 2010
Teaching Assistant, TCP/IP, EPFL, Fall 2009
Teaching Assistant, Stochastic models for communication systems, EPFL, Fall 2008
Teaching Assistant, Informatique II, EPFL, Summer 2008
Teaching Assistant, Advanced Computer Networks and Distributed Systems, EPFL, Fall 2007
Teaching Assistant, Middleware, EPFL, Summer 2007
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