Aggregation languages for moving object and places of interest

Authors:
Leticia I. Gómez;Bart Kuijpers;Alejandro A. Vaisman
Affiliations:
Instituto Techólogico de de Buenos Aires, Argentina;University of Hasselt, Diepenbeek, Belgium;Universidad de Buenos Aires, Argentina
Venue:
Proceedings of the 2008 ACM symposium on Applied computing
Year:
2008

Citing 9
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Abstract

We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language to express complex aggregate queries. Next, we study the compression of trajectory data, produced by moving objects, using the notions of stops and moves. We show that stops and moves are expressible in our query language and we consider a fragment of this language, consisting of regular expressions to talk about temporally ordered sequences of stops and moves. This fragment can be used not only for querying, but also for expressing data mining and pattern matching tasks over trajectory data.