STDBM'04 (abstract)

We present a data model for tracking mobile objects and reporting the result of continuous queries. The model relies on a discrete view of the spatio-temporal space, where the 2D space and the time axis are respectively partitioned in a finite set of user-defined areas and in constant-size intervals. We define a query language to retrieve objects that match mobility patterns describing a sequence of moves and discuss evaluation techniques to maintain incrementally the result of queries.

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