77 search results - page 2 / 16 » Selectivity Estimation of Complex Spatial Queries |
ICDE
2001
IEEE
14 years 9 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...
GEOINFORMATICA
2006
13 years 7 months ago
2006
Existing estimation approaches for spatial databases often rely on the assumption that data distribution in a small region is uniform, which seldom holds in practice. Moreover, the...
ADC
2003
Springer
14 years 26 days ago
2003
Springer
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
CIKM
1998
Springer
13 years 12 months ago
1998
Springer
Despite of the fact that large line segment datasets are appearing more and more frequently in numerous applications involving spatial data, such as GIS 8, 9] multimedia 6] and ev...
SIGMOD
2004
ACM
14 years 7 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 ...