407 search results - page 2 / 82 » Query Estimation by Adaptive Sampling |
UAI
2000
13 years 6 months ago
2000
Sampling is an important tool for estimating large, complex sums and integrals over highdimensional spaces. For instance, importance sampling has been used as an alternative to ex...
SIGMOD
2007
ACM
14 years 5 months ago
2007
ACM
Good cardinality estimates are critical for generating good execution plans during query optimization. Complex predicates, correlations between columns, and user-defined functions...
VLDB
2002
ACM
13 years 4 months ago
2002
ACM
Many valuable text databases on the web have non-crawlable contents that are "hidden" behind search interfaces. Metasearchers are helpful tools for searching over many s...
TKDE
2008
13 years 4 months ago
2008
Data stream management systems need to control their resources adaptively since stream characteristics and query workload may vary over time. In this paper we investigate an approa...
ICDE
2006
IEEE
14 years 6 months ago
2006
IEEE
One important way in which sampling for approximate query processing in a database environment differs from traditional applications of sampling is that in a database, it is feasi...