3456 search results - page 531 / 692 » Semantics in Spatial Databases |
AC
2000
Springer
14 years 20 days ago
2000
Springer
The management of large databases of hierarchical (e.g., multi-scale or multilevel) image features is a common problem in object recognition. Such structures are often represented ...
PODS
1999
ACM
14 years 19 days ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
In emerging applications such as location-based services, sensor monitoring and biological management systems, the values of the database items are naturally imprecise. For these ...
GIS
2010
ACM
13 years 6 months ago
2010
ACM
The quality of a local search engine, such as Google and Bing Maps, heavily relies on its geographic datasets. Typically, these datasets are obtained from multiple sources, e.g., ...
GIS
2010
ACM
13 years 6 months ago
2010
ACM
With modern LiDAR technology the amount of topographic data, in the form of massive point clouds, has increased dramatically. One of the most fundamental GIS tasks is to construct...