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                                                     Seminar

             Department of Systems Engineering and Engineering Management
                                  The Chinese University of Hong Kong

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Title	:	Real-time estimation of urban travel time by matching vehicle magnetic signatures
Speaker	:	Prof. Pravin Varaiya
		Department of Electrical Engineering and Computer Science,University of California, Berkeley
		Department of Electrical and Electronic Engineering,University of Hong Kong
Date	:	January 16th, 2009 (Friday)
Time	:	4:30 p.m. - 5:30 p.m.
Venue	:	Room 513
		William M.W. Mong Engineering Building
		(Engineering Building Complex Phase 2)
		CUHK

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Abstract:
　

A practical system is described for the real-time estimation of urban travel time. The system relies on matching vehicle signatures from wireless magnetic sensors. A correct match of signatures at two locations gives the corresponding travel time of the vehicle. The matching algorithm is based on a statistical model of the signatures. The statistical model itself is estimated from the data, and does not require measurement of ‘ground truth’. The optimal matching procedure is based on a sequence comparison algorithm used in molecular biology. Simulation and field test results are shown. Other applications are discussed. The wireless sensor network technology is briefly described.

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Biography:
　

Pravin Varaiya is Nortel Networks Distinguished Professor in the Department of Electrical Engineering and Computer Sciences at the University of California, Berkeley. From 1975 to 1992 he was also Professor of Economics at Berkeley. His research is concerned with communication networks, transportation, and hybrid systems.

Varaiya has held a Guggenheim Fellowship and a Miller Research Professorship. He has received three Honorary Doctorates, the Field Medal and Bode Prize of the IEEE Control Systems Society, and the Richard E. Bellman Control Heritage Award. He is a Fellow of IEEE, a member of the National Academy of Engineering, and a Fellow of the American Academy of Arts and Science. He is on the editorial board of Transportation Research--C. He has co-authored three books. The second edition of High-Performance Communication Networks (with Jean Walrand) was published by Morgan-Kaufmann in 2000. “Structure and Interpretation of Signals and Systems” (with Edward Lee) was published in 2003 by Addison-Wesley.

************************* ALL ARE WELCOME ************************

Host	:	Prof. Leung, May-Yee, Janny
Tel	:	(852) 2609-8238
Email	:	janny@se.cuhk.edu.hk
Enquiries	:	Prof. Nan Chen or Prof. Sean X. Zhou
	:	Department of Systems Engineering and Engineering Management
		CUHK
Website	:	http://www.se.cuhk.edu.hk/~seg5810
Email	:	seg5810@se.cuhk.edu.hk

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