651 search results - page 53 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
APPT
2003
Springer
14 years 2 months ago
2003
Springer
The increase number of mobile users in wireless environment affects query access time substantially. To minimise the query access time, one possible way is to employ data broadcast...
ICDE
2001
IEEE
14 years 10 months ago
2001
IEEE
Semi-join reducers were introduced in the late seventies as a means to reduce the communication costs of distributed database systems. Subsequent work in the eighties showed, howe...
DCOSS
2008
Springer
13 years 10 months ago
2008
Springer
Sensor networks can be viewed as large distributed databases, and SQL-like high-level declarative languages can be used for data and information retrieval. Energy constraints make ...
SIGIR
2011
ACM
12 years 12 months ago
2011
ACM
We study the problem of automatically assigning appropriate music pieces to a picture or, in general, series of pictures. This task, commonly referred to as soundtrack suggestion,...
CCGRID
2005
IEEE
14 years 2 months ago
2005
IEEE
Partial replication is one type of optimization to speed up execution of queries submitted to large datasets. In partial replication, a portion of the dataset is extracted, re-org...