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» Limiting Negations in Formulas
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LPAR
2010
Springer
13 years 3 months ago
Speed-Up Techniques for Negation in Grounding
Abstract. Grounding is the task of reducing a first order formula to ground formula that is equivalent on a given universe, and is important in many kinds of problem solving and re...
Amir Aavani, Shahab Tasharrofi, Gulay Ünel, E...
EDBT
2004
ACM
155views Database» more  EDBT 2004»
14 years 5 months ago
Processing Unions of Conjunctive Queries with Negation under Limited Access Patterns
We study the problem of answering queries over sources with limited access patterns. The problem is to decide whether a given query Q is feasible, i.e., equivalent to an executable...
Alan Nash, Bertram Ludäscher
EXACT
2007
13 years 7 months ago
Learning Models from Temporal-Logic Properties via Explanations
Given a model and a property expressed in temporal logic, a model checker normally produces a counterexample in case the model does not satisfy the property. This counterexample i...
Miguel A. Carrillo, David A. Rosenblueth
SAT
2009
Springer
94views Hardware» more  SAT 2009»
13 years 12 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...