68 search results - page 5 / 14 » Wavelet-Based Histograms for Selectivity Estimation |
100
click to vote
PKDD
2005
Springer
15 years 3 months ago
2005
Springer
This paper presents an unsupervised discretization method that performs density estimation for univariate data. The subintervals that the discretization produces can be used as the...
173
click to vote
ICDE
2000
IEEE
15 years 11 months ago
2000
IEEE
Optimizing queries that involve operations on spatial data requires estimating the selectivity and cost of these operations. In this paper, we focus on estimating the cost of spat...
ADC
2003
Springer
15 years 2 months ago
2003
Springer
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
ADC
2004
Springer
15 years 3 months ago
2004
Springer
Many spatio-temporal applications involve managing and querying moving objects. In such an environment, predictive spatio-temporal queries become an important query class to be pr...
68
Voted
VLDB
1997
ACM
15 years 1 months ago
1997
ACM
The result size of a query that involves multiple attributes from the same relation depends on these attributes’ joint data distribution,i.e., the frequencies of all combination...