Principles of artificial intelligence
Principles of artificial intelligence
A hierarchy of tractable satisfiability problems
Information Processing Letters
GRASP—a new search algorithm for satisfiability
Proceedings of the 1996 IEEE/ACM international conference on Computer-aided design
A Computing Procedure for Quantification Theory
Journal of the ACM (JACM)
A Simplified Format for the Model Elimination Theorem-Proving Procedure
Journal of the ACM (JACM)
A Linear Format for Resolution With Merging and a New Technique for Establishing Completeness
Journal of the ACM (JACM)
A Unifying View of Some Linear Herbrand Procedures
Journal of the ACM (JACM)
An Implementation of the Model Elimination Proof Procedure
Journal of the ACM (JACM)
The Semantics of Predicate Logic as a Programming Language
Journal of the ACM (JACM)
A machine program for theorem-proving
Communications of the ACM
Logic for Problem Solving
Parallel cooperative propositional theorem proving
Annals of Mathematics and Artificial Intelligence
Lemma and cut strategies for propositional model elimination
Annals of Mathematics and Artificial Intelligence
The Use of Lemmas in the Model Elimination Procedure
Journal of Automated Reasoning
Autarky Pruning in Propositional Model Elimination Reduces Failure Redundancy
Journal of Automated Reasoning
The Search Efficiency of Theorem Proving Strategies
CADE-12 Proceedings of the 12th International Conference on Automated Deduction
CADE-13 Proceedings of the 13th International Conference on Automated Deduction: Automated Deduction
SATO: An Efficient Propositional Prover
CADE-14 Proceedings of the 14th International Conference on Automated Deduction
Problem-Solving Methods in Artificial Intelligence
Problem-Solving Methods in Artificial Intelligence
Automatic SAT-compilation of planning problems
IJCAI'97 Proceedings of the Fifteenth international joint conference on Artifical intelligence - Volume 2
Pushing the envelope: planning, propositional logic, and stochastic search
AAAI'96 Proceedings of the thirteenth national conference on Artificial intelligence - Volume 2
Parallel cooperative propositional theorem proving
Annals of Mathematics and Artificial Intelligence
Autarky Pruning in Propositional Model Elimination Reduces Failure Redundancy
Journal of Automated Reasoning
Conditional Pure Literal Graphs
IJCAR '01 Proceedings of the First International Joint Conference on Automated Reasoning
Persistent and Quasi-Persistent Lemmas in Propositional Model Elimination
Annals of Mathematics and Artificial Intelligence
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Classical STRIPS‐style planning problems are formulated as theorems to be proven from a new point of view: that the problem is not solvable. The result for a refutation‐based theorem prover may be a propositional formula that is to be proven unsatisfiable. This formula is identical to the formula that may be derived directly by various “SAT compilers”, but the theorem‐proving view provides valuable additional information not in the formula, namely, the theorem to be proven. Traditional satisfiability methods, most of which are based on model search, are unable to exploit this additional information. However, a new algorithm called “Modoc” is able to exploit this information and has achieved performance comparable to the fastest known satisfiability methods, including stochastic search methods, on planning problems that have been reported by other researchers, as well as formulas derived from other applications. Unlike most theorem provers, Modoc performs well on both satisfiable and unsatisfiable formulas. Modoc works by a combination of back‐chaining from the theorem clauses and forward‐chaining on tractable subformulas. In some cases, Modoc is able to solve a planning problem without finding a complete assignment because the back‐chaining methodology is able to ignore irrelevant clauses. Although back‐chaining is well known in the literature, a high level of search redundancy existed in previous methods; Modoc incorporates a new technique called “autarky pruning”, which reduces search redundancy to manageable levels, permitting the benefits of back‐chaining to emerge, for certain problem classes. Experimental results are presented for planning problems and formulas derived from other applications.