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SAT
2005
Springer
111views Hardware» more  SAT 2005»
14 years 4 months ago
On Subsumption Removal and On-the-Fly CNF Simplification
Conjunctive Normal Form (CNF) Boolean formulas generated from resolution or solution enumeration often have much redundancy. It is desirable to have an efficient algorithm to simpl...
Lintao Zhang
SAT
2005
Springer
129views Hardware» more  SAT 2005»
14 years 4 months ago
On Finding All Minimally Unsatisfiable Subformulas
Much attention has been given in recent years to the problem of finding Minimally Unsatisfiable Subformulas (MUSes) of Boolean formulas. In this paper, we present a new view of the...
Mark H. Liffiton, Karem A. Sakallah
SEMWEB
2007
Springer
14 years 5 months ago
Sampling and Soundness: Can We Have Both?
Recent research on model counting in CNF formulas has shown that a certain sampling method can yield results that are sound with a provably high probability. The key idea is to ite...
Carla P. Gomes, Jörg Hoffmann, Ashish Sabharw...
SAT
2009
Springer
94views Hardware» more  SAT 2009»
14 years 6 months ago
Solving SAT for CNF Formulas with a One-Sided Restriction on Variable Occurrences
In this paper we consider the class of boolean formulas in Conjunctive Normal Form (CNF) where for each variable all but at most d occurrences are either positive or negative. This...
Daniel Johannsen, Igor Razgon, Magnus Wahlströ...