315 search results - page 11 / 63 » Quantile and histogram estimation |
SAC
2005
ACM
14 years 1 months ago
2005
ACM
: We study the problem of one dimensional selectivity estimation in relational databases. We introduce a new type of histogram based on information theory. We compare our histogram...
BNCOD
2008
13 years 9 months ago
2008
Abstract. Accurate selectivity estimations are essential for query optimization decisions where they are typically derived from various kinds of histograms which condense value dis...
WAIM
2004
Springer
14 years 1 months ago
2004
Springer
Selectivity estimation of path expressions in querying XML data plays an important role in query optimization. A path expression may contain multiple branches with predicates, each...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
The Degenerate Unmixing Estimation Technique (DUET) is a Blind Source Separation (BSS) algorithm for stereo audio. DUET depends on an amplitude-phase 2d histogram built from the d...
FSS
2007
13 years 7 months ago
2007
This paper presents a new fuzzy framework for main motion estimation in video sequences. The estimation is performed using a fuzzy representation of pixel gray levels. The motion ...