117 search results - page 9 / 24 » SPARQLing constraints for RDF |
ESWS
2009
Springer
15 years 4 months ago
2009
Springer
More and more applications use the RDF framework as their data model and RDF stores to index and retrieve their data. Many of these applications require both structured queries as ...
ICLP
2007
Springer
15 years 3 months ago
2007
Springer
This paper describes the dlvhex SPARQL plugin, a query processor for the upcoming Semantic Web query language standard by W3C. We report on the implementation of this languages usi...
DEXAW
2007
IEEE
15 years 1 months ago
2007
IEEE
The vision of the Semantic Web is to make Web content machine-readable. To describe data, the Resource Description Framework has been extended with a schema-level and description ...
103
click to vote
EDBT
2012
ACM
13 years 15 hour ago
2012
ACM
Query optimization in RDF Stores is a challenging problem as SPARQL queries typically contain many more joins than equivalent relational plans, and hence lead to a large join orde...
CIKM
2008
Springer
14 years 11 months ago
2008
Springer
This article is motivated by the importance of building web data mashups. Building on the remarkable success of Web 2.0 mashups, and specially Yahoo Pipes, we generalize the idea ...