88 search results - page 8 / 18 » Exploiting statistics on query expressions for optimization |
177
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SIGMOD
2006
ACM
15 years 10 months ago
2006
ACM
Text is ubiquitous and, not surprisingly, many important applications rely on textual data for a variety of tasks. As a notable example, information extraction applications derive...
GEOINFO
2003
14 years 11 months ago
2003
Relational index structures, as for instance the Relational Interval Tree, the Relational R-Tree, or the Linear Quadtree, support efficient processing of queries on top of existing...
158
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SIGMOD
2007
ACM
15 years 10 months ago
2007
ACM
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
130
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SSDBM
2002
IEEE
15 years 2 months ago
2002
IEEE
The efficient management of interval data represents a core requirement for many temporal and spatial database applications. With the Relational Interval Tree (RI-tree1 ), an effi...
KDD
2007
ACM
15 years 10 months ago
2007
ACM
Summarization is an important task in data mining. A major challenge over the past years has been the efficient construction of fixed-space synopses that provide a deterministic q...