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» The Alternating Fixpoint of Logic Programs with Negation
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PODS
1989
ACM
129views Database» more  PODS 1989»
13 years 9 months ago
The Alternating Fixpoint of Logic Programs with Negation
The alternating xpoint of a logic program with negation is de ned constructively. The underlying idea is monotonically to build up a set of negative conclusions until the least xp...
Allen Van Gelder
LPNMR
1997
Springer
13 years 9 months ago
Improving the Alternating Fixpoint: The Transformation Approach
We present a bottom-up algorithm for the computation of the well-founded model of non-disjunctive logic programs which is based on the set of elementary program transformations stu...
Ulrich Zukowski, Burkhard Freitag, Stefan Brass
PODS
1991
ACM
98views Database» more  PODS 1991»
13 years 8 months ago
Minimum and Maximum Predicates in Logic Programming
A novel approach is proposed for ezpresaing and computing eficienily a large cla88 of problem8, including jinding the shortest path in a graph, that were previously considered imp...
Sumit Ganguly, Sergio Greco, Carlo Zaniolo
LMCS
2007
132views more  LMCS 2007»
13 years 4 months ago
The Complexity of Model Checking Higher-Order Fixpoint Logic
Higher-Order Fixpoint Logic (HFL) is a hybrid of the simply typed λ-calculus and the modal µ-calculus. This makes it a highly expressive temporal logic that is capable of express...
Roland Axelsson, Martin Lange, Rafal Somla
LPNMR
1999
Springer
13 years 9 months ago
On the Role of Negation in Choice Logic Programs
We introduce choice logic programs as negation-free datalog programs that allow rules to have exclusive-only (possibly empty) disjunctions in the head. Such programs naturally mod...
Marina De Vos, Dirk Vermeir