981 search results - page 48 / 197 » Negation in Spatial Reasoning |
SOCO
1998
Springer
13 years 9 months ago
1998
Springer
The development of formal models of spatial relations is a topic of great importance in spatial reasoning, geographic information systems (GIS) and computer vision, and has gained ...
GIS
2010
ACM
13 years 7 months ago
2010
ACM
Spatial Alarms are reminders for mobile users upon their arrival of certain spatial location of interest. Spatial alarm processing requires meeting two demanding objectives: high ...
GIS
1995
ACM
14 years 1 months ago
1995
ACM
An algorithm is presented to answer window queries in a quadtree-based spatial database environment by retrieving the covering blocks in the underlying spatial database. It works ...
GIS
2010
ACM
13 years 8 months ago
2010
ACM
It is cost-effective for data owners to publicize their spatial databases via database outsourcing; however, data privacy and query integrity are major challenges. In this demonst...
GIS
2008
ACM
13 years 10 months ago
2008
ACM
Spatially enabled government requires the development of effective SDIs that will support the vast majority of society, who are not spatially aware, in a transparent manner. This ...