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Trust in Networks and Collaborating Networked Systems

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If you have a question about this talk, please contact Eiko Yoneki.

We are in the age of networks and networked systems: communication, transportation, economic, biological, healthcare, educational, human, social, web-based, etc. This evolution and reality have created unprecedented advances and are impacting every aspect of life and work. However, many of these advances, and resulting expanding markets, are critically endangered by weaknesses in security, integrity and trust. We investigate the complex and polymorphic subject of trust in these distributed systems and describe a new framework using multiple partially ordered semirings for analyzing reputation and trust establishment, dynamics as well as “composite trust”. This framework is inspired by thinking of trust problems as “path problems” in networks. Next we describe our work based on constrained coalitional games towards understanding the role of trust in collaboration and social networks. We describe several specific applications of these methods in securing distributed inference systems, sensor networks for power grids, wireless network routing protocols, distributed control systems. We close by describing challenges and future research directions.

This is joint work with Tage Erlander Guest Professor (KTH, Sweden) and Hans Fischer Senior Fellow (TUM, Germany).

It you would like to meet with Dr Baras please contact Tim Griffin (

Bio: John S. Baras, Lockheed Martin Chair in Systems Engineering. Diploma in Electrical and Mechanical Engineering from the National Technical University of Athens, Greece, 1970; M.S., Ph.D. in Applied Mathematics from Harvard University 1971, 1973. Since 1973, faculty member in the Electrical and Computer Engineering Department, and in the Applied Mathematics, Statistics and Scientific Computation Program, at the University of Maryland College Park. Since 2000, faculty member in the Fischell Department of Bioengineering. Since 2014, faculty member in the Mechanical Engineering Department. Founding Director of the Institute for Systems Research (ISR), 1985 to 1991. Since 1991, Founding Director of the Maryland Center for Hybrid Networks (HYNET). Since 2013, Guest Professor at the Royal Institute of Technology (KTH), Sweden. IEEE Life Fellow, SIAM Fellow, AAAS Fellow, and a Foreign Member of the Royal Swedish Academy of Engineering Sciences (IVA). Received the 1980 George Axelby Prize from the IEEE Control Systems Society, the 2006 Leonard Abraham Prize from the IEEE Communications Society, the 2014 Tage Erlander Guest Professorship from the Swedish Research Council, and a three year (2014-2017) Senior Hans Fischer Fellowship from the Institute for Advanced Study of the Technical University of Munich, Germany. Professor Baras’ research interests include systems and control, optimization, communication networks, signal processing and understanding, robotics, computing systems and networks, network security and trust and model-based systems engineering.

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