A Practical Acyclicity Notion for Query Answering over Horn-SRIQ Ontologies.
David CarralCristina FeierPascal HitzlerPublished in: CoRR (2018)
Keyphrases
- query answering
- data exchange
- dl lite
- ontology based data access
- ontology languages
- conjunctive queries
- data complexity
- answering queries
- integrity constraints
- incomplete information
- transitive roles
- data integration
- ontology mappings
- np hard
- query rewriting
- knowledge base
- inconsistent databases
- query answers
- datalog programs
- description logics
- semantic web
- knowledge representation
- query containment
- databases
- np complete
- schema mappings