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IJCAI
1993
13 years 6 months ago
A Tractable Class of Abduction Problems
literal: Let p be a proposition. Then p and -p are literals. clause: A clause is a disjunction of literals. Horn Clause: A Horn Clause is a clause in which there is at most one po...
Kave Eshghi
COCO
2005
Springer
89views Algorithms» more  COCO 2005»
13 years 10 months ago
Hardness of Max 3SAT with No Mixed Clauses
We study the complexity of approximating Max NME3SAT, a variant of Max 3SAT when the instances are guaranteed to not have any mixed clauses, i.e., every clause has either all its ...
Venkatesan Guruswami, Subhash Khot
CORR
2011
Springer
143views Education» more  CORR 2011»
12 years 9 months ago
Towards Understanding and Harnessing the Potential of Clause Learning
Efficient implementations of DPLL with the addition of clause learning are the fastest complete Boolean satisfiability solvers and can handle many significant real-world problem...
Paul Beame, Henry A. Kautz, Ashish Sabharwal
COCO
2006
Springer
97views Algorithms» more  COCO 2006»
13 years 9 months ago
A Duality between Clause Width and Clause Density for SAT
We consider the relationship between the complexities of - and those of restricted to formulas of constant density. Let be the infimum of those such that - on variables can be dec...
Chris Calabro, Russell Impagliazzo, Ramamohan Patu...
AAAI
2008
13 years 7 months ago
Clause Learning Can Effectively P-Simulate General Propositional Resolution
Currently, the most effective complete SAT solvers are based on the DPLL algorithm augmented by clause learning. These solvers can handle many real-world problems from application...
Philipp Hertel, Fahiem Bacchus, Toniann Pitassi, A...