OWL Query Answering Based on Query Extension.
Birte GlimmYevgeny KazakovIlianna KolliaGiorgos B. StamouPublished in: OWLED (2014)
Keyphrases
- query answering
- answering queries
- query answers
- query rewriting
- data integration systems
- query containment
- data exchange
- ontology languages
- data complexity
- open world
- conjunctive queries
- data integration
- integrity constraints
- regular path queries
- incomplete information
- query relaxation
- query complexity
- unions of conjunctive queries
- data sources
- query processing
- query evaluation
- database
- transitive roles
- ontology based data access
- relational queries
- dl lite
- data management
- ontology mappings
- knowledge base
- approximate answers
- closed world
- semantic web
- knowledge representation