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CPAIOR
2007
Springer
15 years 3 months ago
Preprocessing Expression-Based Constraint Satisfaction Problems for Stochastic Local Search
Abstract. This work presents methods for processing a constraint satisfaction problem (CSP) formulated by an expression-based language, before the CSP is presented to a stochastic ...
Sivan Sabato, Yehuda Naveh
ICALP
2007
Springer
15 years 3 months ago
Universal Algebra and Hardness Results for Constraint Satisfaction Problems
We present algebraic conditions on constraint languages Γ that ensure the hardness of the constraint satisfaction problem CSP(Γ) for complexity classes L, NL, P, NP and ModpL. Th...
Benoit Larose, Pascal Tesson
AAAI
1998
14 years 11 months ago
On the Computation of Local Interchangeability in Discrete Constraint Satisfaction Problems
In [4], Freuderdefines several types of interchangeability to capture the equivalenceamongthe valuesof a variable in a discrete constraint satisfaction problem(CSP), and provides ...
Berthe Y. Choueiry, Guevara Noubir
LICS
2006
IEEE
15 years 3 months ago
A Characterisation of First-Order Constraint Satisfaction Problems
Abstract. We describe simple algebraic and combinatorial characterisations of finite relational core structures admitting finitely many obstructions. As a consequence, we show th...
Benoit Larose, Cynthia Loten, Claude Tardif
TEC
2002
163views more  TEC 2002»
14 years 9 months ago
Ants can solve constraint satisfaction problems
In this paper, we describe a new incomplete approach for solving constraint satisfaction problems (CSPs) based on the ant colony optimization (ACO) metaheuristic. The idea is to us...
Christine Solnon