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GECCO
2007
Springer
179views Optimization» more  GECCO 2007»
15 years 11 months ago
Genetic algorithms for large join query optimization
Genetic algorithms (GAs) have long been used for large join query optimization (LJQO). Previous work takes all queries as based on one granularity to optimize GAs and compares the...
Hongbin Dong, Yiwen Liang
SEMWEB
2009
Springer
15 years 11 months ago
Executing SPARQL Queries over the Web of Linked Data
The Web of Linked Data forms a single, globally distributed dataspace. Due to the openness of this dataspace, it is not possible to know in advance all data sources that might be r...
Olaf Hartig, Christian Bizer, Johann Christoph Fre...
157
Voted
BTW
2003
Springer
140views Database» more  BTW 2003»
15 years 10 months ago
An Ontology for Domain-oriented Semantic Similarity Search on XML Data
Abstract: Query languages for XML such as XPath or XQuery support Boolean retrieval where a query result is a (possibly restructured) subset of XML elements or entire documents tha...
Anja Theobald
INFSOF
2000
92views more  INFSOF 2000»
15 years 4 months ago
Identifying relevant constraints for semantic query optimization
Semantic query optimization is the process of utilizing information implied by integrity constraints to reformulate the query into one that generates the same set of answers in a ...
Sang-goo Lee, Lawrence J. Henschen, Jonghun Chun, ...
ERCIMDL
2010
Springer
144views Education» more  ERCIMDL 2010»
15 years 6 months ago
Capacity-Constrained Query Formulation
Given a set of keyphrases, we analyze how Web queries with these phrases can be formed that, taken altogether, return a specified number of hits. The use case of this problem is a ...
Matthias Hagen, Benno Stein