Professor Klara Nahrstedt im Kolloquium der Fakultät für Mathematik und Informatik

Liebe Kolleginnen und Kollegen, liebe Mitarbeiter, liebe Studierende, Frau Professor Dr. Klara Nahrstedt wird im Kolloquium der Fakultät für Mathematik und Informatik einen Vortrag halten, und zwar am 29.11.2010 um 17:15 h in A 5, 6 Raum C 012. Frau Professor Nahrstedt ist weltweit bekannt als Professorin für Informatik. Sie ist zurzeit Humboldt-Stipendiatin. Hier ihr Vortrag: Title: Characterizing and Leveraging People Movement on a University Campus Speaker: Professor Dr. Klara Nahrstedt Department of Computer Science University of Illinois at Urbana-Champaign USA Collecting real human movements has drawn significant attention from research community. The reasons are multiple, including new insights in network protocol design, network management within urban planning, and environmental impact. However, obtaining comprehensive trace of people movement with integrated context information about location, contacts and stay duration has been missing and it proves to be a hard task. In this talk we present a novel framework, called UIM (University of Illinois Movement), which includes (a) scanning process of joint location information (via WiFi scanner) and ad hoc contacts (via Bluetooth scanner) of human movement at the University of Illinois campus using Google Android phones, (b) trace analysis algorithm of joint Bluetooth/WiFi information with its inference towards characterization of people mobility patterns, and (c) data dissemination protocol which uses both WiFi access point and ad hoc contact to expedite the data forwarding. Our results show that we can characterize the detailed regularity of people movement, the visit duration of people at certain locations, and the popularity of locations. The evaluation of our dissemination protocol shows strong improvement of data forwarding delays when compared with other state-of-the-art protocols. We will conclude the talk with a short discussion of challenges when it comes to mobility patterns of different user groups and of needs for characterizing and understanding people movement patterns in different scenarios if we aim to deploy effective protocols and services on future mobile hand-held devices. -- Prof. Dr. Wolfgang Effelsberg Tel: +49 621 181 2600 Praktische Informatik IV Fax: +49 621 181 2601 University of Mannheim effelsberg(a)informatik.uni-mannheim.de 68131 Mannheim, Germany pi4.informatik.uni-mannheim.de/~effels