482 search results - page 70 / 97 » Selectivity Estimation in Spatial Databases |
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
Decision support queries that scan large indexes can suffer significant degradation in I/O performance due to index fragmentation. DBAs rely on rules of thumb that use index size a...
AVBPA
2005
Springer
14 years 1 months ago
2005
Springer
Data collection for both training and testing a classifier is a tedious but essential step towards face detection and recognition. It is a piece of cake to collect more than hundre...
VLDB
1994
ACM
13 years 12 months ago
1994
ACM
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
CLEF
2007
Springer
14 years 1 months ago
2007
Springer
This paper describes the participation of MIRACLE research consortium at the Query Parsing task of GeoCLEF 2007. Our system is composed of three main modules. First, the Named Geo...
AC
2000
Springer
14 years 4 days ago
2000
Springer
The management of large databases of hierarchical (e.g., multi-scale or multilevel) image features is a common problem in object recognition. Such structures are often represented ...