43 search results - page 4 / 9 » Vague Spatial Data Types, Set Operations, and Predicates |
LOCA
2007
Springer
14 years 2 months ago
2007
Springer
Many context- and location-aware applications request high accuracy and availability of positioning systems. In reality however, knowledge about the current position may be incompl...
ACTA
2002
13 years 7 months ago
2002
In the constraint database community, FO+poly and FO+linear have been proposed as foundations for spatial database query languages. One of the strengths of this approach is that t...
SSD
1993
Springer
13 years 12 months ago
1993
Springer
: Spatial data types or algebras for database systems should (i) be fully general (which means, closed under set operations, hence e.g. a region value can be a set of polygons with...
DEXAW
1999
IEEE
14 years 5 days ago
1999
IEEE
ing spatio-temporal data as abstract data types into already existing data models is a promising approach to creating spatio-temporal query languages. In this context, an importan...
GIS
2004
ACM
14 years 9 months ago
2004
ACM
act Model of Three-Dimensional Spatial Data Types Markus Schneider & Brian E Weinrich University of Florida Department of Computer & Information Science & Engineering G...