928 search results - page 108 / 186 » Analysis and optimization of active databases |
SSD
2001
Springer
14 years 2 months ago
2001
Springer
In this paper we introduce the notion of constrained nearest neighbor queries (CNN) and propose a series of methods to answer them. This class of queries can be thought of as neare...
VLDB
1997
ACM
14 years 2 months ago
1997
ACM
A number of techniques have been developed for maximizing disk utilization in media servers, including disk arm scheduling and data placement ones. Instead, in this paper we focus...
ICMCS
2007
IEEE
14 years 4 months ago
2007
IEEE
In this paper, we propose a new approach of facial expression recognition. In order to capture the temporal characteristic of facial expressions, we design dynamic haar-like featu...
ICDE
2008
IEEE
14 years 11 months ago
2008
IEEE
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
VLDB
2004
ACM
14 years 3 months ago
2004
ACM
Histograms and Wavelet synopses provide useful tools in query optimization and approximate query answering. Traditional histogram construction algorithms, such as V-Optimal, optim...