INHALT & PFAD:
Cooperative Road Traffic Information Systems and In-Network Data Aggregation
Uhrzeit: 12.30 Uhr s.t.
Ort: Cartesium Rotunde
Vortragende(r): Prof. Dr. Björn Scheuermann
(Humboldt Universität Berlin)
Communication among road vehicles and car navigation devices enables systems that can be termed "cooperative traffic information systems": In such systems, the vehicles continuously exchange information on, for instance, the current traffic situation or free parking places. Cars act as sensors, routers, and end users of the cooperatively collected data, all at the same time. The realization of such a cooperative traffic information system requires continuous dissemination of up-to-date data from many mobile sources in a large area. This turns out to pose significant challenges with respect to the network protocol design: a closer look soon reveals that naive approaches quickly fail due to inherent capacity constraints in car-to-car networking. In order to deal with these inherent limitations, the cooperatively collected and shared information must be aggregated within the network, so as to reduce the amount of data more and more with increasing disstance from the source area. In this talk we will introduce the fundamental difficulties that arise in such applications, we will discuss design alternatives, and we will show how decentralized aggregation mechanisms for continuously changing distributed data can be designed based on probabilistic data structures.
Björn Scheuermann is a Professor and Chair of Computer Engineering at Humboldt University of Berlin, Germany. He obtained a B.Sc. in Mathematics and Computer Science in 2004 and a Diploma degree (German M.Sc. equivalent) in Computer Science in the same year, both from the University of Mannheim, Germany. In 2007, he received his Ph.D. in Computer Science from Heinrich Heine University, Düsseldorf, Germany. In the same year, he visited the Computer Laboratory at the University of Cambridge, UK. He became a Junior Professor at Heinrich Heine University in 2008. After positions of Associate Professor and head of the Telematics group at the University of Würzburg and Associate Professor in Practical Computer Science / IT Security at the University of Bonn he joined Humboldt University in October 2012.
Björn Scheuermann is a Junior Fellow of the German Informatics Society (Gesellschaft für Informatik, GI). During his studies, he was a Fellow of the German National Academic Foundation (Studienstiftung des Deutschen Volkes), for which he now serves as a liaison professor (Vertrauensdozent) at Humboldt University. He is a recipient of the Award for Young Creative Academics of the State Capital of Düsseldorf (2011), his PhD thesis was chosen as the faculty's best doctoral dissertation of the year (out of a total of 192 PhD theses).
Ansprechpartner(in) / Einladende(r):
Prof. Dr. Johannes