2514 search results - page 19 / 503 » On the Computation of Approximations of Database Queries |
ICDE
2003
IEEE
15 years 6 days ago
2003
IEEE
In moving object environments, it is infeasible for the database tracking the movement of objects to store the exact locations of objects at all times. Typically, the location of a...
JCP
2007
13 years 10 months ago
2007
Abstract— Data synopsis is a lossy compressed representation of data stored into databases that helps the query optimizer to speed up the query process, e.g. time to retrieve the...
DMSN
2004
ACM
14 years 4 months ago
2004
ACM
Recent work in sensor databases has focused extensively on distributed query problems, notably distributed computation of aggregates. Existing methods for computing aggregates bro...
ICDT
1995
ACM
14 years 2 months ago
1995
ACM
Partial information in databases can arise when information from several databases is combined. Even if each database is complete for some \world", the combined databases wil...
ICDE
2005
IEEE
14 years 4 months ago
2005
IEEE
In recent years, content-based image retrieval has become more and more important in many application areas. Similarity retrieval is inherently a very demanding process, in partic...