Answering Threshold Queries in Probabilistic Datalog+/- Ontologies.
Georg GottlobThomas LukasiewiczGerardo I. SimariPublished in: SUM (2011)
Keyphrases
- query answering
- answering queries
- query language
- probabilistic databases
- ontology based data access
- complexity of query answering
- uncertain databases
- ontology languages
- query rewriting
- query answers
- dl lite
- conjunctive queries
- query evaluation
- data exchange
- uncertain data
- data complexity
- semantic query
- database
- query containment
- query processing
- relational calculus
- recursive programs
- databases
- expressive power
- response time
- datalog queries
- aggregate queries
- user queries
- web search engines
- logic programming
- relational query languages
- data integration
- incomplete information
- complex queries
- integrity constraints
- knowledge base
- database query languages
- probabilistic model
- query complexity
- domain ontology
- description logics
- range queries
- relational model
- information integration
- database queries
- language model
- knowledge representation
- approximate answers
- semantic web
- retrieval systems
- data model
- relational algebra
- tuple generating dependencies
- database systems
- information retrieval