24 search results - page 1 / 5 » Practical Aspects of Query Rewriting for OWL 2 |
76
Voted
SEMWEB
2009
Springer
15 years 4 months ago
2009
Springer
Abstract. Query answering for the QL profile of OWL 2 and a substantial fragment of the EL profile can be implemented via query rewriting. In our previous work, we presented RQR...
102
Voted
DLOG
2011
14 years 1 months ago
2011
We present an optimized query rewriting algorithm for OWL 2 QL that computes the rewriting set of a user query by avoiding unnecessary inferences and extended clause subsumption ch...
81
Voted
WS
2008
ACM
14 years 10 months ago
2008
ACM
Since achieving W3C recommendation status in 2004, the Web Ontology Language (OWL) has been successfully applied to many problems in computer science. Practical experience with OW...
99
Voted
DLOG
2011
14 years 1 months ago
2011
We show that deciding conjunctive query inseparability for OWL 2 QL ontologies is PSpace-hard and in ExpTime. We give polynomial-time (incomplete) algorithms and demonstrate by exp...
104
Voted
CIKM
2007
Springer
15 years 4 months ago
2007
Springer
Regular path queries (RPQ’s) are given by means of regular expressions and ask for matching patterns on labeled graphs. RPQ’s have received great attention in the context of s...