304 search results - page 34 / 61 » Selectivity Estimation of Window Queries |
CASCON
2001
13 years 9 months ago
2001
On Line Analytical Processing (OLAP) aims at gaining useful information quickly from large amounts of data residing in a data warehouse. To improve the quickness of response to qu...
SIGMOD
1994
ACM
13 years 12 months ago
1994
ACM
We describe an algorithm for estimating the number of page fetches for a partial or complete scan of a B-tree index. The algorithm obtains estimates for the number of page fetches ...
CVPR
2010
IEEE
14 years 3 months ago
2010
IEEE
A framework is presented for estimating the pose of a camera based on images extracted from a single omnidirectional image of an urban scene, given a 2D map with building outlines...
3DPVT
2006
IEEE
14 years 1 months ago
2006
IEEE
In this paper we present a prototype system for image based localization in urban environments. Given a database of views of city street scenes tagged by GPS locations, the system...
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...