Keyphrases
- logic programs
- logic programming
- fixpoint
- answer sets
- stable models
- normal logic programs
- inductive logic programming
- answer set programming
- background knowledge
- computational properties
- existentially quantified
- partial deduction
- logic program updates
- answer set semantics
- stable model semantics
- prolog programs
- loop formulas
- expert systems
- query answering
- declarative semantics