197 search results - page 19 / 40 » Efficiently approximating query optimizer plan diagrams |
CORR
1999
Springer
13 years 7 months ago
1999
Springer
Abstract. Nearest neighbor searching is a fundamental computational problem. A set of n data points is given in real d-dimensional space, and the problem is to preprocess these poi...
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
In recent years, large amount of data modeled by graphs, namely graph data, have been collected in various domains. Efficiently processing queries on graph databases has attracted...
WCE
2007
13 years 8 months ago
2007
—Spatial query execution is an essential functionality of a sensor network. Redundancy within a sensor network can be exploited to reduce the communication cost incurred in execu...
MOBIHOC
2003
ACM
14 years 7 months ago
2003
ACM
Spatial query execution is an essential functionality of a sensor network, where a query gathers sensor data within a specific geographic region. Redundancy within a sensor networ...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
Linear optimization queries retrieve the top-K tuples in a sliding window of a data stream that maximize/minimize the linearly weighted sums of certain attribute values. To effici...