77 search results - page 3 / 16 » Foundations of SPARQL Query Optimization |
WWW
2006
ACM
14 years 10 months ago
2006
ACM
Applications and services that access Web data are becoming increasingly more useful and wide-spread. Current main-stream Web query languages such as XQuery, XSLT, or SPARQL, howe...
EDBT
2012
ACM
12 years 6 days 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...
ESWS
2008
Springer
13 years 11 months ago
2008
Springer
Integrated access to multiple distributed and autonomous RDF data sources is a key challenge for many semantic web applications. As a reaction to this challenge, SPARQL, the W3C Re...
DLOG
2011
13 years 1 months ago
2011
W3C currently extends the SPARQL query language with so-called entailment regimes, which define how queries are evaluated using logical entailment relations. We describe a sound a...
CADE
2012
Springer
12 years 6 days ago
2012
Springer
The problem of SPARQL query containment is defined as determining if the result of one query is included in the result of another for any RDF graph. Query containment is important...