[UCI-Calit2] Networked Systems Seminar

[Anna Lynn Spitzer]

Title:     Trust and Reputation in Networked Systems: Social,
Information, Communication, Control

 

Speaker:   Prof. John Baras, Lockheed Martin Chair in Systems
Engineering, Department of Electrical and Computer Engineering,
University of Maryland, College Park

 

Date:      Friday, Nov. 20, 2009

 

Time:      11 a.m. - noon, refreshments at 10:45am

 

Location: Donald Bren Hall, Room 6011

 

Host:      Hamid Jafarkhani

 

Abstract:

 

Trust and reputation are critical concepts in networks - communication,
control, computer, social, web-based social, economic, biological. Trust
evaluation leads to the development of relations and collaborations.
These evaluations are based either on direct 'communal' monitoring and
inference by the nodes, or on indirect references and credentials. We
describe new fundamental ways for analyzing and evaluating trust in
autonomic networked systems. The indirect evaluation process is modeled
as a path problem on a directed graph, where nodes represent entities,
and edges represent trust relations. We develop a novel formulation of
trust computation as 'linear' iterations on partially ordered
semi-rings. 

 

The direct trust evaluation process is modeled as iterated games on
dynamic graphs. We present several explicit examples. We present the
methodology of constrained coalitional dynamic games that we have
developed for studying the effects of trust on collaboration. We provide
several examples with quantitative evaluation of trust on distributed
inference and control systems using a combination of these new algebraic
and analytical methods.

 

Biography:

 

Baras earned a bachelor's degree in electrical engineering from the
National Technical University of Athens, Greece in 1970; he earned M.S.
and Ph.D. degrees in applied math from Harvard University in 1971 and
1973, respectively. Since 1973, he has been on the faculty of the
Electrical and Computer Engineering Department, and Applied Mathematics,
at the University of Maryland, College Park. In 2000, he joined the
Fischell Department of Bioengineering. Baras was the founding director
of the Institute for Systems Research (ISR) 1985-1991. Since 1991, has
been the director of the Maryland Center for Hybrid Networks (HYNET). He
is a Fellow of the IEEE and a foreign member of the Royal Swedish
Academy of Engineering Sciences. Baras, whose research interests include
control, communication and computing systems, received the 1980 George
Axelby Prize from the IEEE Control Systems Society and the 2006 Leonard
Abraham Prize from the IEEE Communications Society. 

 

 

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