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Grainger Lecture Series Presentation: Distributed Stopping and Privacy-Preservation in Average Consensus

Speaker Christoforos Hadjicostis
Date: 7/2/2014
Time: 4:00 pm
Location: CSL Auditorium, B02
Sponsor: ECE ILLINOIS
Event Type: Seminars
 

Christoforos Hadjicostis, a professor of Electrical and Computer Engineering at the University of Cyprus, will give a Grainger Lecture Series Presentation at 4 p.m. Wednesday, July 2, in BO2 CSL.

The title will be, "Distributed Stopping and Privacy-Preservation in Average Consensus."

Abstract:
In this talk, we analyze enhancements for iterative strategies that enable the components of a distributed system, each with some initial value, to asymptotically reach consensus to the average of these initial values. The algorithms we propose can be used in practical settings (e.g., coordination of distributed energy resources) to cap the number of iterations and/or transmissions, and to ensure privacy while reaching average consensus. We first discuss how iterative strategies for asymptotic average consensus, in possibly directed communication topologies (digraphs), can be adapted so that the nodes can determine, in a distributed manner, when approximate average consensus has been reached (i.e., when their values are close to the desirable average). We then discuss strategies that enable the nodes to asymptotically reach consensus to the average of their initial values, without having to reveal the specific value they contribute to the average calculation.

Bio:
Christoforos Hadjicostis is professor of Electrical and Computer Engineering at the University of Cyprus. He received SB degrees, the MEng degree, and the PhD degree in Electrical Engineering and Computer Science, all from MIT. From 1999 to 2007, he worked in ECE ILLINOIS. Since 2007, he has been with the Department of Electrical and Computer Engineering at the University of Cyprus, where he served as Department Chair from 2008-10. His research focuses on fault diagnosis and tolerance in distributed dynamic systems; error control coding; monitoring, diagnosis and control of large-scale discrete event systems; and related applications in embedded systems, distributed robotics, anomaly detection and network security, and bimolecular networks. Dr. Hadjicostis has served or is serving on the Editorial Boards of various international journals in the systems and control area, including IEEE Trans. on Automatic Control, IEEE Trans. on Circuits and Systems, and the Journal of Discrete Event Dynamic Systems.