6004 search results - page 87 / 1201 » Parallelizing query optimization |
ICDE
2007
IEEE
14 years 4 months ago
2007
IEEE
Most database query optimizers use cost models to identify good query execution plans. Inaccuracies in the cost models can cause query optimizers to select poor plans. In this pap...
SIGIR
2006
ACM
14 years 3 months ago
2006
ACM
Large-scale web and text retrieval systems deal with amounts of data that greatly exceed the capacity of any single machine. To handle the necessary data volumes and query through...
DOLAP
1998
ACM
14 years 2 months ago
1998
ACM
Star schema has been a typical model for both online transaction processing in traditional databases and online analytical processing in large data warehouses. In the star schema,...
PE
2008
Springer
13 years 10 months ago
2008
Springer
We develop a queueing model for analyzing resource replication strategies in wireless sensor networks. The model can be used to minimize either the total transmission rate of the ...
CCE
2008
13 years 8 months ago
2008
A simple optimal balance control scheme for electrolyzation plants is proposed. It can be realized through the use of a commercially available model predictive control (MPC) packa...