91 search results - page 1 / 19 » Accurate Estimation of the Cost of Spatial Selections |
ICDE
2000
IEEE
14 years 6 months ago
2000
IEEE
Optimizing queries that involve operations on spatial data requires estimating the selectivity and cost of these operations. In this paper, we focus on estimating the cost of spat...
SIGMOD
2004
ACM
14 years 5 months ago
2004
ACM
Spatial Database Management Systems (SDBMS), e.g., Geographical Information Systems, that manage spatial objects such as points, lines, and hyper-rectangles, often have very high ...
CIVR
2004
Springer
13 years 10 months ago
2004
Springer
We describe an original method for selecting key frames to represent the content of every shot in a video. We aim at spatially sampling in an uniform way the coverage of the scene ...
SIGMOD
1999
ACM
13 years 9 months ago
1999
ACM
Selectivity estimation of queries is an important and wellstudied problem in relational database systems. In this paper, we examine selectivity estimation in the context of Geogra...
ICDE
2001
IEEE
14 years 6 months ago
2001
IEEE
Spatial Joins are important and time consuming operations in spatial database management systems. It is crucial to be able to accurately estimate the performance of these operatio...