Yasumasa Fujisaki - Osaka University,Japan - "A characterization of algebraic connectivity of multi-agent systems with hierarchical network structure"

Abstract:
This talk deals with a characterization of a multi-agent system with hierarchical network structure having heterogeneous substructure based on its algebraic connectivity. The multi-agent system is modeled as an interconnected system of several kinds of multi-agent subsystems via a certain structure, where several vertices of each subsystem are connected to the structure, that is, to other subsystems. The algebraic connectivity of this multi-agent system can be characterized by using an appropriate multi-agent system having homogeneous subsystems under a certain condition, which is investigated in this talk. In particular, it is shown that an algebraic condition for adding links (edges) to subsystems which preserve the algebraic connectivity. This is a joint work with Hojin Lee, Osaka University.
Bio-sketch:
Professor Fujisaki received his B.S., M.S., and Ph.D. degrees in engineering from Kobe
University, Kobe, Japan, in 1986, 1988, and 1994, respectively. From
1988 to 1991, he was a Research Member of the Electronics Research
Laboratory, Kobe Steel, Ltd., Kobe, Japan. From 1991 to 2010, he was
with Kobe University and served as a Research Associate and an
Associate Professor. Since 2010, he has been a Professor of the
Department of Information and Physical Sciences, Osaka University,
Suita, Japan. He held a visiting academic appointment at IEIIT-CNR,
Politecnico di Torino, Italy, from 2000 to 2001. He served as an
Associate Editor of Automatica from 2001 to 2012 and an Editor of SICE
Journal of Control, Measurement, and System Integration from 2011 to
2017. His research interests include analysis and design of large
scale systems.