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CP
2008
Springer
13 years 6 months ago
Perfect Constraints Are Tractable
By using recent results from graph theory, including the Strong Perfect Graph Theorem, we obtain a unifying framework for a number of tractable classes of constraint problems. Thes...
András Z. Salamon, Peter G. Jeavons
CP
2008
Springer
13 years 6 months ago
Crossword Puzzles as a Constraint Problem
We present new results in crossword composition, showing that our program significantly outperforms previous successful techniques in the literature. We emphasize phase transition ...
Anbulagan, Adi Botea
CP
2008
Springer
13 years 6 months ago
Elicitation Strategies for Fuzzy Constraint Problems with Missing Preferences: Algorithms and Experimental Studies
Fuzzy constraints are a popular approach to handle preferences and over-constrained problems in scenarios where one needs to be cautious, such as in medical or space applications. ...
Mirco Gelain, Maria Silvia Pini, Francesca Rossi, ...
CP
2008
Springer
13 years 6 months ago
Universal Booleanization of Constraint Models
Abstract. While the efficiency and scalability of modern SAT technology offers an intriguing alternative approach to constraint solving via translation to SAT, previous work has mo...
Jinbo Huang
CP
2008
Springer
13 years 6 months ago
Engineering Stochastic Local Search for the Low Autocorrelation Binary Sequence Problem
Abstract. This paper engineers a new state-of-the-art Stochastic Local Search (SLS) for the Low Autocorrelation Binary Sequence (LABS) problem. The new SLS solver is obtained with ...
Steven Halim, Roland H. C. Yap, Felix Halim
CP
2008
Springer
13 years 6 months ago
Guiding Search in QCSP+ with Back-Propagation
The Quantified Constraint Satisfaction Problem (QCSP) has been introduced to express situations in which we are not able to control the value of some of the variables (the universa...
Guillaume Verger, Christian Bessiere
CP
2008
Springer
13 years 6 months ago
Perfect Derived Propagators
When implementing a propagator for a constraint, one must decide about variants: When implementing min, should one also implement max? Should one implement linear equations both wi...
Christian Schulte, Guido Tack
CP
2008
Springer
13 years 6 months ago
Experimenting with Small Changes in Conflict-Driven Clause Learning Algorithms
Experimentation of new algorithms is the usual companion section of papers dealing with SAT. However, the behavior of those algorithms is so unpredictable that even strong experime...
Gilles Audemard, Laurent Simon