Keyphrases
- query answering
- dl lite
- description logics
- reasoning tasks
- data exchange
- open world
- data complexity
- integrity constraints
- incomplete information
- number restrictions
- knowledge base
- conjunctive queries
- data integration
- knowledge representation
- computational properties
- answering queries
- query rewriting
- first order logic
- datalog programs
- artificial intelligence
- automated reasoning
- owl dl
- data mining
- probabilistic reasoning
- data management
- semantic web
- ontology languages
- query containment
- special case
- regular path queries
- machine learning