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IJCAI
2007
13 years 9 months ago
Counting Complexity of Propositional Abduction
Abduction is an important method of non-monotonic reasoning with many applications in artificial intelligence and related topics. In this paper, we concentrate on propositional ab...
Miki Hermann, Reinhard Pichler
IPL
2007
99views more  IPL 2007»
13 years 7 months ago
Substitutions into propositional tautologies
We prove that there is a polynomial time substitution (y1, . . . , yn) := g(x1, . . . , xk) with k << n such that whenever the substitution instance A(g(x1, . . . , xk)) of ...
Jan Krajícek
LPNMR
2007
Springer
14 years 1 months ago
Yet Another Proof of the Strong Equivalence Between Propositional Theories and Logic Programs
Recently, the stable model semantics was extended to the syntax of arbitrary propositional formulas, which are beyond the traditional rule form. Cabalar and Ferraris, as well as Ca...
Joohyung Lee, Ravi Palla
FOCS
2007
IEEE
14 years 1 months ago
Parameterized Proof Complexity
We propose a proof-theoretic approach for gaining evidence that certain parameterized problems are not fixedparameter tractable. We consider proofs that witness that a given prop...
Stefan S. Dantchev, Barnaby Martin, Stefan Szeider
JSAT
2006
126views more  JSAT 2006»
13 years 7 months ago
Complexity Results for Quantified Boolean Formulae Based on Complete Propositional Languages
Several propositional fragments have been considered so far as target languages for knowledge compilation and used for improving computational tasks from major AI areas (like infe...
Sylvie Coste-Marquis, Daniel Le Berre, Florian Let...