Detecting Unsolvable Queries for Definite Logic Programs.
Maurice BruynoogheHenk VandecasteeleD. Andre de WaalMarc DeneckerPublished in: PLILP/ALP (1998)
Keyphrases
- logic programs
- logic programming
- recursive programs
- answer sets
- answer set programming
- fixpoint
- stable models
- inductive logic programming
- query processing
- partial deduction
- background knowledge
- computational properties
- term rewriting systems
- query language
- query evaluation
- prolog programs
- recursive queries
- database
- horn clauses
- answering queries
- normal logic programs
- stable model semantics
- strong equivalence
- logic program updates
- data sources