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IEEE San Diego Section

IEEE/SPS Graph Signal Processing: Graph Filters and Stationarity

on February 20, 2018 from 10:00 AM to 12:00 PM

Speaker Dr. Geert Leus
Topic Info One of the cornerstones of the field of graph signal processing are graph filters, direct analogues of time-domain filters, but intended for signals defined on graphs. In this talk, we will give an overview of the graph filtering problem. More specifically, we look at the family of finite impulse response (FIR) and infinite impulse response (IIR) graph filters and show how they can be used for different applications. Next, the concept of graph stationarity is introduced, which facilitates the analysis and processing of random graph signals. This is a challenging task due to the irregularity of the underlying graph domain. Firstly, coexisting stationarity definitions are presented along with explanations of their genesis, advantages, and disadvantages. Secondly, we introduce the concept of power spectral density for graph processes and propose a number of methods to estimate it. These methods include nonparametric approaches such as correlograms, as well as parametric approaches. Finally, we illustrate our covariance and power spectral density estimation schemes in synthetic and real-world graphs.
Speaker Bio Geert Leus received the M.Sc. and Ph.D. degree in Electrical Engineering from the KU Leuven, Belgium, in June 1996 and May 2000, respectively. He is full Professor at Delft University of Technology, The Netherlands. His research interests are in the broad area of signal processing, with a specific focus on wireless communications, array processing, sensor networks, and graph signal processing. Geert Leus received a 2002 IEEE Signal Processing Society Young Author Best Paper Award and a 2005 IEEE Signal Processing Society Best Paper Award. He is a Fellow of the IEEE and a Fellow of EURASIP. Geert Leus was a Member-at-Large of the Board of Governors of the IEEE Signal Processing Society, the Chair of the IEEE Signal Processing for Communications and Networking Technical Committee, a Member of the IEEE Sensor Array and Multichannel Technical Committee, and the Editor in Chief of the EURASIP Journal on Advances in Signal Processing. He was also on the Editorial Boards of the IEEE Transactions on Signal Processing, the IEEE Transactions on Wireless Communications, the IEEE Signal Processing Letters, and the EURASIP Journal on Advances in Signal Processing. Currently, he is the Vice-Chair of the EURASIP Special Area Team on Signal Processing for Multisensor Systems, an Associate Editor of Foundations and Trends in Signal Processing, and the Editor in Chief of EURASIP Signal Processing.
Location UCSD, Jacobs Hall of Engineering (EBU1); 2nd Floor, Room 2512 (Booker Hall), 9500 Gilman Drive, La Jolla, CA 92093
Directions Parking: Hopkins structure (level 7) visitor spots. The nearest self pay station will be on the same floor right in front of the elevators. Visitors can also use the Gilman parking structure (almost equidistant), levels 1 and 2. The self-pay stations are located near the elevator.

Contact D. Lee Fugal at lfugal@cox.net for map or further directions if needed.   
Agenda 10 AM - 12 AM Talk and Networking
Cost No cost. Morning coffee provided
RSVP No RSVP required



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