96 search results - page 16 / 20 » Selectivity estimation for spatio-temporal queries to moving... |
ICMCS
2005
IEEE
14 years 2 months ago
2005
IEEE
Periodicity is useful for compact representation of periodic motion and a reasonable selection of a proper temporal scale for periodic motion analysis. In this paper, we concern t...
EDBT
2008
ACM
14 years 8 months ago
2008
ACM
Automatic physical database design tools rely on "what-if" interfaces to the query optimizer to estimate the execution time of the training query workload under differen...
DASFAA
2007
IEEE
13 years 10 months ago
2007
IEEE
To support emerging database applications that deal with continuously changing (or moving) data objects (CCDOs), such as vehicles, RFIDs, and multi-stimuli sensors, one requires an...
APWEB
2005
Springer
14 years 1 months ago
2005
Springer
Summarizing topological relations is fundamental to many spatial applications including spatial query optimization. In this paper, we examine the selectivity estimation for range w...
IDEAS
2000
IEEE
14 years 24 days ago
2000
IEEE
Most operations of the relational algebra or SQL - like projection with duplicate elimination, join, ordering, group by and aggregations - are efficiently processed using a sorted...