Query answering over uncertain RDF knowledge bases: explain and obviate unsuccessful query results.
Ibrahim DellalStéphane JeanAllel HadjaliBrice ChardinMickaël BaronPublished in: Knowl. Inf. Syst. (2019)
Keyphrases
- query answering
- answering queries
- query answers
- query rewriting
- incomplete information
- data integration systems
- data exchange
- rdf knowledge bases
- query containment
- data complexity
- conjunctive queries
- integrity constraints
- data integration
- regular path queries
- query relaxation
- ontology based data access
- query complexity
- query processing
- dl lite
- data structure
- rdf data
- query execution
- database
- query evaluation
- aggregate queries
- datalog programs
- range queries
- recursive queries
- data sources
- database systems
- schema mappings
- probabilistic databases
- autonomous agents
- approximate answers
- data management
- query language
- artificial intelligence
- machine learning