Dichotomies in Ontology-Mediated Querying with the Guarded Fragment.
André HernichCarsten LutzFabio PapacchiniFrank WolterPublished in: ACM Trans. Comput. Log. (2020)
Keyphrases
- ontology based data access
- query language
- ontology reasoning
- databases
- semantic web
- domain ontology
- expressive power
- first order logic
- guarded fragment
- semantically heterogeneous
- query processing
- knowledge representation
- constraint databases
- conjunctive queries
- conceptual model
- transitive closure
- query answering
- artificial intelligence