856 search results - page 69 / 172 » Location-based Spatial Queries |
117
Voted
ICRA
2007
IEEE
15 years 7 months ago
2007
IEEE
— Different coherence dimensions can be considered to improve the performances of an algorithm for computing collision translations of pairs of convex polyhedra. The algorithm’...
96
Voted
COMPSAC
1997
IEEE
15 years 4 months ago
1997
IEEE
Retrieving images by content and forming visual queries are important functionality of an image database system. Using textual descriptions to specify queries on image content is ...
SIGMOD
2002
ACM
16 years 25 days ago
2002
ACM
Spatial indexing has been one of the active focus areas in recent database research. Several variants of Quadtree and R-tree indexes have been proposed in database literature. In ...
190
click to vote
VLDB
2006
ACM
17 years 12 days ago
2006
ACM
This paper tackles a major privacy concern in current location-based services where users have to continuously report their locations to the database server in order to obtain the ...
109
Voted
ADC
2004
Springer
15 years 6 months ago
2004
Springer
Aggregating spatial objects is a necessary step in generating spatial data cubes to support roll-up/drill-down operations. Current approaches face performance bottleneck issues wh...