491 search results - page 42 / 99 » Optimizing complex queries with multiple relation instances |
EDBT
2010
ACM
14 years 22 days ago
2010
ACM
The wide availability of commodity multi-core systems presents an opportunity to address the latency issues that have plaqued XML query processing. However, simply executing multi...
GECCO
2009
Springer
14 years 2 months ago
2009
Springer
Indicator-based algorithms have become a very popular approach to solve multi-objective optimization problems. In this paper, we contribute to the theoretical understanding of alg...
PVLDB
2008
13 years 7 months ago
2008
Estimates of predicate selectivities by database query optimizers often differ significantly from those actually encountered during query execution, leading to poor plan choices a...
PVLDB
2010
13 years 6 months ago
2010
Ontology-based data access is a powerful form of extending database technology, where a classical extensional database (EDB) is enhanced by an ontology that generates new intensio...
ICTAI
2002
IEEE
14 years 17 days ago
2002
IEEE
In this paper, we propose new dominance relations that can speed up significantly the solution process of nonlinear constrained dynamic optimization problems in discrete time and...