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SAC
2005
ACM
14 years 1 months ago
Identifying topological predicates for vague spatial objects
Many geographical applications deal with spatial objects that cannot be adequately described by determinate, crisp concepts because of their intrinsically indeterminate and vague ...
Alejandro Pauly, Markus Schneider
COMPGEOM
2000
ACM
14 years 9 days ago
Kinetic connectivity for unit disks
We describe a kinetic data structure (KDS) that maintains the connected components of the union of a set of unit-radius disks moving in the plane. We assume that the motion of eac...
Leonidas J. Guibas, John Hershberger, Subhash Suri...
AC
1992
Springer
14 years 19 hour ago
Logic and Databases
Logic and databases have gone a long way together since the advent of relational databases. Already the rst basic query languages for relational databases beside relational algebra...
Johann Eder
DASFAA
2004
IEEE
92views Database» more  DASFAA 2004»
13 years 11 months ago
Modeling Temporally Variable Transportation Networks
In this paper, a State-Based Dynamic Transportation Network (SBDTN) model is presented, which can be used to describe the spatiotemporal aspect of temporally variable transportatio...
Zhiming Ding, Ralf Hartmut Güting
EKAW
2006
Springer
13 years 11 months ago
Capturing Quantified Constraints in FOL, Through Interaction with a Relationship Graph
As new semantic web standards evolve to allow quantified rules in FOL, we need new ways to capture them from end users. We show how to do this against a graphic view of entities an...
Peter M. D. Gray, Graham J. L. Kemp