To support 3D architectural modeling, geometric constraints are introduced. Explicit and implicit geometric relations between building elements can be expressed by the designer an...
Bert de Vries, A. J. Jessurun, Richard H. M. C. Ke...
This paper introduces U-relations, a succinct and purely relational representation system for uncertain databases. U-relations support attribute-level uncertainty using vertical pa...
Lyublena Antova, Thomas Jansen, Christoph Koch, Da...
Although much work on relation extraction has aimed at obtaining static facts, many of the target relations are actually fluents, as their validity is naturally anchored to a cer...
Location information can be used to enhance interaction with mobile devices. While many location systems require instrumentation of the environment, we present a system that allow...
Gerd Kortuem, Christian Kray, Hans-Werner Gellerse...
To fix the semantics of different kinds of parthood relations we require axioms which go beyond those characterizing partial orderings. I formulate such axioms and show their impl...