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» Efficient Optimization of Iterative Queries
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ICDE
2006
IEEE
152views Database» more  ICDE 2006»
14 years 10 months ago
A Complete and Efficient Algebraic Compiler for XQuery
As XQuery nears standardization, more sophisticated XQuery applications are emerging, which often exploit the entire language and are applied to non-trivial XML sources. We propos...
Christopher Re, Jérôme Siméon,...
SIGMOD
2008
ACM
161views Database» more  SIGMOD 2008»
14 years 9 months ago
Efficient pattern matching over event streams
Pattern matching over event streams is increasingly being employed in many areas including financial services, RFIDbased inventory management, click stream analysis, and electroni...
Jagrati Agrawal, Yanlei Diao, Daniel Gyllstrom, Ne...
ICDT
2010
ACM
180views Database» more  ICDT 2010»
14 years 6 months ago
Foundations of SPARQL Query Optimization
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the Semantic W...
Michael Schmidt, Michael Meier, Georg Lausen
ICDE
2001
IEEE
128views Database» more  ICDE 2001»
14 years 10 months ago
Counting Twig Matches in a Tree
We describe efficient algorithms for accurately estimating the number of matches of a small node-labeled tree, i.e., a twig, in a large node-labeled tree, using a summary data str...
Zhiyuan Chen, H. V. Jagadish, Flip Korn, Nick Koud...
ADC
2005
Springer
114views Database» more  ADC 2005»
14 years 2 months ago
Optimization of Relational Preference Queries
The design and implementation of advanced personalized database applications requires a preference-driven approach. Representing preferences as strict partial orders is a good cho...
Bernd Hafenrichter, Werner Kießling