68 search results - page 1 / 14 » Wavelet-Based Histograms for Selectivity Estimation |
SIGMOD
1998
ACM
13 years 9 months ago
1998
ACM
Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...
CAIP
2007
Springer
13 years 8 months ago
2007
Springer
This paper presents a novel texture descriptor based on the wavelet transform. First, we will consider vertical and horizontal coefficients at the same position as the components o...
SIGMOD
1996
ACM
13 years 9 months ago
1996
ACM
Many commercial database systems maintain histograms to summarize the contents of relations and permit efficient estimation of query result sizes and access plan costs. Although s...
CVPR
2004
IEEE
14 years 6 months ago
2004
IEEE
This paper presents a novel hierarchical approach to triangular mesh generation from height fields. A waveletbased multiresolution analysis technique is used to estimate local sha...
ADC
2007
Springer
13 years 11 months ago
2007
Springer
Histograms are used extensively for selectivity estimation and approximate query processing. Workloadaware dynamic histograms can self-tune itself based on query feedback without ...