Select a calendar:
Filter December Events by Event Type:
Conferences, Lectures, & Seminars
Events for December
-
Distributed Anomaly Detection for Wireless Sensor Networks
Fri, Dec 05, 2008 @ 11:30 AM - 12:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Dr. Chris Leckie
Department of Computer Science and Software Engineering
University of Melbourne
Abstract:
Identifying misbehaviors is an important challenge for monitoring, fault
diagnosis and intrusion detection in wireless sensor networks. A key
problem is how to minimize the communication overhead and energy
consumption in the network when identifying misbehaviors. We treat this as
a problem of distributed unsupervised learning, where the aim is to build
and combine compact representations of normal behaviour based on the local
measurements from each sensor. These models can be based on
hyperellipsoidal, cluster-based or kernel-based representations. A key
objective is to minimize the communication overhead required to share
these models of normal behaviour between sensor nodes. We demonstrate on
data from real-life sensor networks that our scheme achieves comparable
accuracy compared to equivalent centralized approaches while achieving a
significant reduction in communication overhead.
Bio:
Dr Chris Leckie is an Associate Professor in the Department of Computer
Science and Software Engineering at the University of Melbourne,
Australia. He has made numerous theoretical contributions to the use of
clustering for problems such as anomaly detection in wireless sensor
networks and the Internet. In particular, he has developed efficient
clustering techniques that are specifically designed to cope with highdimensional
and time-varying data streams, which are a major challenge in
network intrusion detection. His work on filtering denial-of-service
attacks on the Internet has been commercialized with an Australian company
(IntelliGuard I.T.), leading to a commercial product. His research has
been published in leading journals and conferences such as ACM Computing
Surveys, IEEE TKDE, Artificial Intelligence, IJCAI and ICML.
Host: Bhaskar Krishnamachari ext. 12528Location: Frank R. Seaver Science Center (SSC) - 319
Audiences: Everyone Is Invited
Contact: B.Krishnamachari
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
The Classically-Enhanced Father Protocol
Mon, Dec 15, 2008 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Mark M. WildeMonday, December 15, 2008
11:00am - 12:00pm
EEB 539Abstract: The classically-enhanced father protocol is an optimal protocol for a sender to transmit both classical and quantum information to a receiver by exploiting preshared entanglement and a large number of independent uses of a noisy quantum channel. We detail the proof of a quantum Shannon theorem that gives the three-dimensional capacity region containing all achievable rates that the classically-enhanced father protocol obtains. Points in the capacity region are rate triples consisting of the classical communication rate, the quantum communication rate, and the entanglement consumption rate of a particular coding scheme. The classically-enhanced father protocol is more general than any other protocol in the family tree of quantum Shannon theoretic protocols. Several previously known quantum protocols are now child protocols of the classically-enhanced father protocol. Interestingly, the classically-enhanced father protocol gives insight for constructing optimal classically-enhanced entanglement-assisted quantum error-correcting codes.Biography: Mark M. Wilde completed the Ph.D. program in Electrical Engineering at USC in August 2008 with special focus in quantum computing and quantum communication. He obtained a Master's of Science degree at Tulane University in New Orleans, Louisiana. He pursued undergraduate studies in computer engineering at Texas A&M University in College Station, Texas. NEC Laboratories America in Princeton, New Jersey hosted him as a visitor for September 2008 and the Centre for Quantum Technologies at the National University of Singapore hosted him from October to the present date. He will begin a career at Science Applications International Corporation (SAIC) in Washington, DC in January 2009 with a focus on quantum computing and quantum communication applications.Host: Prof. Todd Brun, tbrun@usc.edu, EEB 502, x03503Location: Hughes Aircraft Electrical Engineering Center (EEB) - 539
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Partially Polarized Noise in Optical Fiber Communications System
Wed, Dec 24, 2008 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Curtis R. Menyuk
Computer Science and Electrical Engineering Department
University of Maryland Baltimore CountyAbstract: Polarization effects such as polarization-dependent loss (PDL), polarization-dependent gain (PDG), and polarization mode dispersion (PMD) can significantly impact system performance. When characterizing system performance, it is important to relate the more fundamental Q-factor to the more easily measured signal-to-noise ratio (SNR). It is also important to take into account the realistic optical and electrical filter shapes. The widely used formulae to relate Q and SNR that can be found in optical fiber communications textbooks only consider two extreme cases in which the noise is unpolarized or completely co-polarized with the signal. However, partially polarized noise can occur in systems with significant PDL. In a series of publications, members of my research group have systematically investigated the impact of partially polarized noise both theoretically and experimentally. I will summarize the results of that research in my presentation. A key finding is that the relationship between Q and SNR is not unique. As a consequence, Q can vary greatly even when the SNR does not change.Bio: Curtis R. Menyuk was born March 26, 1954. He received the B.S. and M.S. degrees from MIT in 1976 and the Ph.D. from UCLA in 1981. He has worked as a research associate at the University of Maryland, College Park and at Science Applications International Corporation in McLean, VA. In 1986 he became an Associate Professor in the Department of Electrical Engineering at the University of Maryland Baltimore County, and he was the founding member of this department. In 1993, he was promoted to Professor. He was on partial leave from UMBC from Fall, 1996 until Fall, 2002. From 1996 – 2001, he worked part-time for the Department of Defense, co-directing the Optical Networking program at the DoD Laboratory for Telecommunications Sciences in Adelphi, MD from 1999 – 2001. In 2001 – 2002, he was Chief Scientist at PhotonEx Corporation. For the last 20 years, his primary research area has been theoretical and computational studies of fiber optic communications, lasers, and nonlinear optics. He has authored or co-authored more than 210 archival journal publications as well as numerous other publications and presentations. He has also edited two books. The equations and algorithms that he and his research group at UMBC have developed to model optical fiber transmission systems are used extensively in the telecommunications industry. He is a member of the Society for Industrial and Applied Mathematics. He is a fellow of the American Physical Society, the Optical Society of America, and the IEEE. He is a former UMBC Presidential Research Professor.Host: Alan Willner, willner@usc.edu, EEB 538, x04664Location: Hughes Aircraft Electrical Engineering Center (EEB) - 539
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor.
