TransDec: A Data-Driven Framework for Decision-Making in Transportation Systems

Wednesday, May 19, 2010 - 11:00am


Wednesday, May 26, 2010
3:30 – 4:30 PM
Computer Science Conference Room, Harold Frank Hall Rm. 1132

HOST: Divy Agrawal

SPEAKER: Cyrus Shahabi
University of Southern California

Title: TransDec: A Data-Driven Framework for Decision-Making in Transportation Systems


The vast amounts of transportation datasets (traffic flow, incidents, etc.) collected by various federal and state agencies are extremely valuable in 1) real-time decision-making, planning, and management of the transportation systems, and 2) conducting research to develop new policies to enhance the efficacy of the transportation systems. In this talk, I will present our data-driven framework, dubbed TransDec (short for Transportation Decision-Making), which enables real-time integration, visualization, querying, and analysis of dynamic and archived transportation data. I will show that considering the large size of the transportation data, variety of the data (different modalities and resolutions), and frequent changes of the data, implementation of such a scalable system that allows for effective querying and analysis of both archived and real-time data is an intrinsically challenging data management task. Subsequently, I will focus on a route-planning problem where the weights on the road-network edges vary as a function of time due to the variability of traffic congestion. I will show that naïve approaches to address this problem are either inaccurate or slow, motivating the need for new solutions. Consequently, I will discuss our initial approach to this problem and demonstrate its implementation within the TransDec framework.


Cyrus Shahabi is a Professor and the Director of the Information Laboratory (InfoLAB) at the Computer Science Department and also the Director of the NSF’s Integrated Media Systems Center (IMSC) at the University of Southern California. He is also the CTO and co-founder of a USC spin-off, Geosemble Technologies. He received his B.S. in Computer Engineering from Sharif University of Technology in 1989 and then his M.S. and Ph.D. Degrees in Computer Science from the University of Southern California in May 1993 and August 1996, respectively. He authored two books and more than hundred research papers in the areas of databases, GIS and multimedia. Dr. Shahabi has received funding from several agencies such as NSF, NASA, NIH, DARPA, AFRL, and DHS as well as several industries such as Google, Microsoft, NCR and Chevron. He is currently on the editorial board of VLDB Journal, IEEE Transactions on Parallel and Distributed Systems (TPDS), ACM Computers in Entertainment and Journal of Spatial Information Science. He is the founding chair of IEEE NetDB workshop and also the general co-chair of ACM GIS 2007, 2008 and 2009. He regularly serves on the program committee of major conferences such as VLDB, ACM SIGMOD, IEEE ICDE, ACM SIGKDD, and ACM Multimedia. Dr. Shahabi is the recipient of NSF CAREER award as well as the U.S. Presidential Early Career Awards for Scientists and Engineers (PECASE). He is a distinguished member of ACM and a senior member of IEEE.