8 citations · 10 across the 3 of their papers we have counts for
3 papers · 1 filter
Temporal Support of Regular Expressions in Sequential Pattern Mining
Leticia Gomez, Bart Kuijpers, Alejandro Vaisman
Classic algorithms for sequential pattern discovery, return all frequent sequences present in a database, but, in general, only a few ones are interesting for the user. Languages b…
Aggregation Languages for Moving Object and Places of Interest Data
Leticia Gomez, Bart Kuijpers, Alejandro Vaisman
We address aggregate queries over GIS data and moving object data, where non-spatial data are stored in a data warehouse. We propose a formal data model and query language to expre…
Spatial Aggregation: Data Model and Implementation
Leticia Gomez, Sofie Haesevoets, Bart Kuijpers +1
Data aggregation in Geographic Information Systems (GIS) is only marginally present in commercial systems nowadays, mostly through ad-hoc solutions. In this paper, we first present…