Dichotomies in Ontology-Mediated Querying with the Guarded Fragment.
André HernichCarsten LutzFabio PapacchiniFrank WolterPublished in: CoRR (2018)
Keyphrases
- ontology based data access
- ontology reasoning
- domain ontology
- query language
- expressive power
- knowledge base
- knowledge representation
- databases
- first order logic
- semantic web
- semantic information
- semantically heterogeneous
- database
- multi dimensional
- conceptual model
- transitive closure
- guarded fragment
- data model
- conjunctive queries
- search space