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» Domain Transmutation in Constraint Satisfaction Problems
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FOCS
2002
IEEE
14 years 18 days ago
A Dichotomy Theorem for Constraints on a Three-Element Set
The Constraint Satisfaction Problem (CSP) provides a common framework for many combinatorial problems. The general CSP is known to be NP-complete; however, certain restrictions on...
Andrei A. Bulatov
CORR
2008
Springer
76views Education» more  CORR 2008»
13 years 7 months ago
An Efficient Algorithm for a Sharp Approximation of Universally Quantified Inequalities
This paper introduces a new algorithm for solving a subclass of quantified constraint satisfaction problems (QCSP) where existential quantifiers precede universally quantified ine...
Alexandre Goldsztejn, Claude Michel, Michel Rueher
MST
2008
124views more  MST 2008»
13 years 7 months ago
Complexity of Clausal Constraints Over Chains
We investigate the complexity of the satisfiability problem of constraints over finite totally ordered domains. In our context, a clausal constraint is a disjunction of inequaliti...
Nadia Creignou, Miki Hermann, Andrei A. Krokhin, G...
ECAI
2010
Springer
13 years 8 months ago
Restarts and Nogood Recording in Qualitative Constraint-based Reasoning
Abstract. This paper introduces restart and nogood recording techniques in the domain of qualitative spatial and temporal reasoning. Nogoods and restarts can be applied orthogonall...
Matthias Westphal, Stefan Wölfl, Jason Jingsh...
AAAI
2007
13 years 10 months ago
Using Expectation Maximization to Find Likely Assignments for Solving CSP's
We present a new probabilistic framework for finding likely variable assignments in difficult constraint satisfaction problems. Finding such assignments is key to efficient sea...
Eric I. Hsu, Matthew Kitching, Fahiem Bacchus, She...