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2004
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A Characterization of First-Order Topological Properties of Planar Spatial Data

12 years 10 months ago
A Characterization of First-Order Topological Properties of Planar Spatial Data
d abstract) Michael Benedikt Bell Labs Jan Van den Bussche Limburgs Universitair Centrum Christof L?oding Lehrstuhl Informatik VII RWTH Aachen Thomas Wilke Institut f?ur Informatik und Praktische Mathematik Christian-Albrechts-Universit?at zu Kiel Closed semi-algebraic sets in the plane form a powerful model of planar spatial datasets. We establish a characterization of the topological properties of such datasets expressible in the relational calculus with real polynomial constraints. The characterization is in the form of a query language that can only talk about points in the set and the "cones" around these points.
Christof Löding, Jan Van den Bussche, Michael
Added 08 Dec 2009
Updated 08 Dec 2009
Type Conference
Year 2004
Where PODS
Authors Christof Löding, Jan Van den Bussche, Michael Benedikt, Thomas Wilke
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