Abstract
The increasing pervasiveness of GPS-enabled devices has given arisen to a variety of applications based on GPS data. For instance, in the scenario of geo-tagging, an individual is able to tag photos with the locations where they were taken. Later, users can effectively browse the photos on a map. However, so far, these categories of applications still use raw GPS data directly without much understanding. Meanwhile, the increasing availability of GPS data has also brought the challenges on large-scale data management. So, in this presentation, we will focus on the following three parts:

1) Introduce some novel applications based on GPS data and point out their constraints.
2) Understanding user behaviors and interests using GPS data.
3) Report on a technique offering spatio-temporal search function over GPS data.

Speaker Biography
Yu Zheng joined Microsoft Research Asia as an associate researcher in 2006 after obtained his Ph.D. degree in Information and Communication Engineering from Southwest Jiaotong University. He has more than 30 publications in prestigious journals and conferences, such as WWW and Ubicomp, etc. He has been a program committee member of many international conferences and a reviewer of many ACM/IEEE journals. In recent years, his research interests include mobile & local search, geographic information systems, GPS-based applications and information retrieval. One of his GPS-based projects, called GeoLife, has attracted more than 20 media reports from authoritative presses, such as Seattle Times, British Guardian, China Technical Daily, etc. during the past six months. <Back>