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STACS
2010
Springer
15 years 4 months ago
Unsatisfiable Linear CNF Formulas Are Large and Complex
We call a CNF formula linear if any two clauses have at most one variable in common. We show that there exist unsatisfiable linear k-CNF formulas with at most 4k2 4k clauses, and ...
Dominik Scheder
ESOP
2008
Springer
14 years 11 months ago
Iterative Specialisation of Horn Clauses
Abstract. We present a generic algorithm for solving Horn clauses through iterative specialisation. The algorithm is generic in the sense that it can be instantiated with any decid...
Christoffer Rosenkilde Nielsen, Flemming Nielson, ...
NMR
2004
Springer
15 years 2 months ago
Logic programs with annotated disjunctions
Current literature offers a number of different approaches to what could generally be called “probabilistic logic programming”. These are usually based on Horn clauses. Here, ...
Joost Vennekens, Sofie Verbaeten, Maurice Bruynoog...
ESOP
2001
Springer
15 years 2 months ago
Control-Flow Analysis in Cubic Time
Abstract. It is well-known that context-independent control flow analysis can be performed in cubic time for functional and object-oriented languages. Yet recent applications of c...
Flemming Nielson, Helmut Seidl
AMAI
2002
Springer
14 years 9 months ago
Generalizations of Watched Literals for Backtracking Search
The technique of watching two literals per clause to determine when a clause becomes a unit clause was introduced recently in the Chaff satisfiability program. That program does n...
Allen Van Gelder