304 search results - page 34 / 61 » Selectivity Estimation of Window Queries |
116
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CASCON
2001
15 years 2 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
15 years 5 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 ...
120
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CVPR
2010
IEEE
15 years 9 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...
109
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3DPVT
2006
IEEE
15 years 7 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...
116
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ICDE
2010
IEEE
16 years 1 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...