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IJCAI
2003
9 years 11 months ago
A Fast and Simple Algorithm for Bounds Consistency of the AllDifferent Constraint
In constraint programming one models a problem by stating constraints on acceptable solutions. The constraint model is then usually solved by interleaving backtracking search and ...
Alejandro López-Ortiz, Claude-Guy Quimper, ...
AAAI
2010
9 years 11 months ago
Propagating Conjunctions of AllDifferent Constraints
We study propagation algorithms for the conjunction of two ALLDIFFERENT constraints. Solutions of an ALLDIFFERENT constraint can be seen as perfect matchings on the variable/value...
Christian Bessiere, George Katsirelos, Nina Narody...
CORR
2011
Springer
207views Education» more  CORR 2011»
9 years 4 months ago
The AllDifferent Constraint with Precedences
We propose ALLDIFFPREC, a new global constraint that combines together an ALLDIFFERENT constraint with precedence constraints that strictly order given pairs of variables. We ident...
Christian Bessiere, Nina Narodytska, Claude-Guy Qu...
CSCLP
2005
Springer
10 years 3 months ago
On Generators of Random Quasigroup Problems
Problems that can be sampled randomly are a good source of test suites for comparing quality of constraint satisfaction techniques. Quasigroup problems are representatives of struc...
Roman Barták
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