Rewriting Minimizations for Efficient Query Answering over Ontologies.
Tassos VenetisGiorgos StoilosVasilis VassalosPublished in: Int. J. Artif. Intell. Tools (2017)
Keyphrases
- query answering
- conjunctive queries
- query rewriting
- ontology based data access
- dl lite
- data exchange
- data complexity
- regular path queries
- data integration
- integrity constraints
- datalog programs
- ontology languages
- inconsistent databases
- answering queries
- knowledge base
- transitive roles
- magic sets
- ontology mappings
- incomplete information
- databases
- xml data exchange
- information integration
- schema mappings
- np complete
- knowledge representation
- query relaxation
- special case
- computational complexity