46 search results - page 4 / 10 » Hashed samples: selectivity estimators for set similarity se... |
JACM
2012
11 years 9 months ago
2012
A fundamental problem in data management is to draw and maintain a sample of a large data set, for approximate query answering, selectivity estimation, and query planning. With la...
ICDM
2009
IEEE
14 years 2 months ago
2009
IEEE
— In a data-mining approach, a model for estimation of Aerosol Optical Depth (AOD) from satellite observations is learned using collocated satellite and groundbased observations....
VLDB
2001
ACM
13 years 11 months ago
2001
ACM
Estimating the number of distinct values is a wellstudied problem, due to its frequent occurrence in queries and its importance in selecting good query plans. Previous work has sh...
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...
ECIR
2004
Springer
13 years 8 months ago
2004
Springer
In this paper we combine two existing resource selection approaches, CORI and the decision-theoretic framework (DTF). The state-of-the-art system CORI belongs to the large group of...