285 search results - page 10 / 57 » Optimization of Real Conjunctive Queries |
JAPLL
2010
13 years 5 months ago
2010
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...
SPIRE
2009
Springer
14 years 1 months ago
2009
Springer
Abstract. Term-partitioned indexes are generally inefficient for the evaluation of conjunctive queries, as they require the communication of long posting lists. On the other side, ...
AAAI
2007
13 years 9 months ago
2007
The use of ontologies in various application domains, such as Data Integration, the Semantic Web, or ontology-based data management, where ontologies provide the access to large a...
EDBT
2008
ACM
14 years 6 months ago
2008
ACM
For complex data mining queries, query optimization issues arise, similar to those for the traditional database queries. However, few works have applied the cost-based query optim...
SEMWEB
2010
Springer
13 years 4 months ago
2010
Springer
Abstract. In order to effectively and quickly answer queries in environments with distributed RDF/OWL, we present a query optimization algorithm to identify the potentially relevan...