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HONG KONG BAPTIST UNIVERSITY
FACULTY OF SCIENCE

Department of Computer Science Colloquium
2005 Series

Where is 'location' in Location-Based Services?

Prof. Dik Lun LEE
Computer Science Department
Hong Kong University of Science and Technology

Date: March 4, 2005 (Friday)
Time: 11:30 am - 12:30 pm
Venue: SCT909, Cha Chi Ming Science Tower, Ho Sin Hang Campus

Abstract
Location-based services (LBSs) provide customers with services adapted to the locations that are of interest to the customers. A trivial example is to find the nearest restaurant for the user. A more complicated one is to identify buddies who are within a certain distance range or in the same 'place'. To build useful LBSs, we cannot simply treat the world as a 3-D Euclidean space. We need to model the world as logical objects for which the coordinates are just one aspect. In this talk, I will begin with describing a simple location model that we developed for indoor navigation. I will show a couple of applications where the model is applied. I will also talk about some research issues on location-based query processing and conclude with a few research directions that I intend to pursue.

Biography
Dik Lun Lee received the MS and PhD degrees in computer science from the University of Toronto in 1981 and 1985, respectively. He is a Professor in the Department of Computer Science at the Hong Kong University of Science and Technology, and was an associate professor in the Department of Computer and Information Science at the Ohio State University, Columbus, Ohio. He has served as a guest editor for several special issues on database-related topics, and as a program committee member and chair for numerous international conferences. He was the founding conference chair for the International Conference on Mobile Data Management. His research interests include document retrieval and management, discovery, management and integration of information resources on Internet, and mobile and pervasive computing. He was the chairman of the ACM Hong Kong Chapter.

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Department of Computer Science, Hong Kong Baptist University
Hong Kong Baptist University