Distributed Island-Based Query Answering for Expressive Ontologies.
Sebastian WandeltRalf MöllerPublished in: GPC (2010)
Keyphrases
- query answering
- dl lite
- data exchange
- ontology based data access
- ontology languages
- data integration
- conjunctive queries
- data complexity
- answering queries
- integrity constraints
- incomplete information
- heterogeneous data
- transitive roles
- tight complexity bounds
- description logics
- databases
- query rewriting
- ontology mappings
- distributed systems
- cooperative
- inconsistent databases
- heterogeneous data sources
- query containment
- data integration systems
- query answers
- double exponential
- query relaxation
- owl ontologies
- owl dl
- ontology matching
- schema mappings
- semantic web
- natural language
- multi agent
- metadata
- knowledge base