482 search results - page 39 / 97 » Selectivity Estimation in Spatial Databases |
KDD
2010
ACM
13 years 5 months ago
2010
ACM
One essential issue of document clustering is to estimate the appropriate number of clusters for a document collection to which documents should be partitioned. In this paper, we ...
DEXA
2010
Springer
13 years 5 months ago
2010
Springer
We researched to try to find a way to reduce the cost of nearest neighbor searches in metric spaces. Many similarity search indexes recursively divide a region into subregions by u...
SSD
2005
Springer
14 years 1 months ago
2005
Springer
Abstract. A top-k OLAP query groups measures with respect to some abstraction level of interesting dimensions and selects the k groups with the highest aggregate value. An example ...
ICIP
2009
IEEE
13 years 5 months ago
2009
IEEE
Many computer vision algorithms such as object tracking and event detection assume that a background model of the scene under analysis is known. However, in many practical circums...
ECCV
2006
Springer
14 years 9 months ago
2006
Springer
A novel adaptive and patch-based approach is proposed for image regularization and representation. The method is unsupervised and based on a pointwise selection of small image patc...