Tracking Nearest Surrounders in Moving Object Environments

Publication Type

Conference Proceeding Article

Publication Date

6-2006

Abstract

This paper presents a system framework to support continuous nearest surrounder (NS) queries in moving object environments. NS query finds the nearest objects at individual distinct angles from a query point. This query distinguishes itself from other conventional spatial queries such as range queries and nearest neighbor queries by considering both distance and angular aspects of objects with respect to a query point. One of NS query applications is to monitor the nearest objects around an observation point. In our framework, a centralized server is dedicated to collect object location updates, to determine affected NS queries of each object location update, to compute the incremental result change of affected queries and to deliver result updates to corresponding interested users/applications that initiate the queries. In particular, we propose algorithms namely, safe region formation and partial query evaluation, that can significantly improve the system performance. Through simulations, we validate our proposed algorithms over a wide range of settings.

Discipline

Databases and Information Systems | Numerical Analysis and Scientific Computing

Publication

the IEEE International Conference on Pervasive Services(ICPS'06)

First Page

3

Last Page

12

ISBN

9781424402373

Identifier

10.1109/PERSER.2006.1652200

Publisher

IEEE

Additional URL

http://dx.doi.org/10.1109/PERSER.2006.1652200

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