3456 search results - page 65 / 692 » Semantics in Spatial Databases |
VLDB
1995
ACM
13 years 11 months ago
1995
ACM
The spatial join operation is benchmarked using variants of well-known spatial data structures such as the R-tree, R-tree, R+-tree, and the PMR quadtree. The focus is on a spatia...
ER
2006
Springer
13 years 11 months ago
2006
Springer
One of the main drawbacks of the Semantic Web is the lack of semantically rich data, since most of the information is still stored in relational databases. In this paper, we presen...
GIS
2009
ACM
14 years 2 months ago
2009
ACM
Gazetteers are key components of georeferenced information systems, including applications such as Web-based mapping services. Existing gazetteers lack the capabilities to fully i...
DEXA
2001
Springer
14 years 16 days ago
2001
Springer
Image mining systems that can automatically extract semantically meaningful information (knowledge) from image data are increasingly in demand. The fundamental challenge in image m...
ICDT
2009
ACM
14 years 2 months ago
2009
ACM
A formal semantics of uncertain databases typically takes an algebraic approach by mapping an uncertain database to a set of relational databases, or possible worlds. We present a...