625 search results - page 54 / 125 » Genetic algorithms for large join query optimization |
WWW
2008
ACM
14 years 8 months ago
2008
ACM
In this paper, we formalize the problem of Basic Graph Pattern (BGP) optimization for SPARQL queries and main memory graph implementations of RDF data. We define and analyze the c...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
There is growing interest in algorithms for processing and querying continuous data streams (i.e., data that is seen only once in a fixed order) with limited memory resources. Pro...
GECCO
2009
Springer
14 years 2 months ago
2009
Springer
Size and complexity of data repositories collaboratively created by Web users generate a need for new processing approaches. In this paper, we study the problem of detection of ...
GECCO
2007
Springer
14 years 1 months ago
2007
Springer
The basic idea to defend in this paper is that an adequate perception of the search space, sacrificing most of the precision, can paradoxically accelerate the discovery of the mo...
WWW
2010
ACM
14 years 2 months ago
2010
ACM
Query suggestion has been an effective approach to help users narrow down to the information they need. However, most of existing studies focused on only popular/head queries. Si...