Sciweavers

40 search results - page 3 / 8
» Conjunctive Query Answering for Description Logics with Tran...
Sort
View
OWLED
2008
13 years 7 months ago
Conjunctive Query Answering in EL using a Database System
We study conjunctive query answering in the description logic EL, the core of the designated OWL2-EL profile of OWL2. In particular, we present an approach that allows the use of c...
Carsten Lutz, David Toman, Frank Wolter
DLOG
2007
13 years 8 months ago
Conjunctive Query Entailment for SHOQ
An important reasoning task, in addition to the standard DL reasoning services, is conjunctive query answering. In this paper, we present a decision procedure for conjunctive query...
Birte Glimm, Ian Horrocks, Ulrike Sattler
DLOG
2008
13 years 8 months ago
Conjunctive Query Answering in SH using Knots
Answering conjunctive queries (CQs) has been recognized as a key task for the usage of Description Logics (DLs) in a number of applications. The problem has been studied by many au...
Magdalena Ortiz, Mantas Simkus, Thomas Eiter
DLOG
2006
13 years 7 months ago
Data Complexity of Answering Unions of Conjunctive Queries in SHIQ
The novel context of accessing and querying large data repositories through ontologies that are formalized in terms of expressive DLs requires on the one hand to consider query an...
Magdalena Ortiz, Diego Calvanese, Thomas Eiter
JAPLL
2010
179views more  JAPLL 2010»
13 years 4 months ago
Tractable query answering and rewriting under description logic constraints
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 ...
Héctor Pérez-Urbina, Boris Motik, Ia...