8 citations · 8 across the 5 of their papers we have counts for
5 papers
A triangle-based logic for affine-invariant querying of spatial and spatio-temporal data
Sofie Haesevoets, Bart Kuijpers
In spatial databases, incompatibilities often arise due to different choices of origin or unit of measurement (e.g., centimeters versus inches). By representing and querying the da…
An Affine-invariant Time-dependent Triangulation of Spatio-temporal Data
Sofie Haesevoets, Bart Kuijpers
In the geometric data model for spatio-temporal data, introduced by Chomicki and Revesz, spatio-temporal data are modelled as a finite collection of triangles that are transformed…
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…
First-order Complete and Computationally Complete Query Languages for Spatio-Temporal Databases
Floris Geerts, Sofie Haesevoets, Bart Kuijpers
We address a fundamental question concerning spatio-temporal database systems: ``What are exactly spatio-temporal queries?'' We define spatio-temporal queries to be computable mapp…
Classes of Spatiotemporal Objects and Their Closure Properties
Jan Chomicki, Sofie Haesevoets, Bart Kuijpers +1
We present a data model for spatio-temporal databases. In this model spatio-temporal data is represented as a finite union of objects described by means of a spatial reference obje…