315 search results - page 12 / 63 » Quantile and histogram estimation |
AND
2009
13 years 5 months ago
2009
This paper presents an adaptive method for the skew angle estimation of noisy handwritten Arabic documents using the energy distributions of Cohen’s class. The presence of noise...
SIGMOD
2010
ACM
13 years 6 months ago
2010
ACM
Virtually all histograms store for each bucket the number of distinct values it contains and their average frequency. In this paper, we question this paradigm. We start out by inv...
SIGMOD
1998
ACM
14 years 2 days 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 ...
SIGMOD
1999
ACM
14 years 4 days ago
1999
ACM
The database query optimizer requires the estimation of the query selectivity to find the most efficient access plan. For queries referencing multiple attributes from the same rel...
ISCI
2007
13 years 7 months ago
2007
Selectivity estimation is an important step of query optimization in a database management system, and multidimensional histogram techniques have proved promising for selectivity ...