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In constraint satisfaction, local consistency conditions are properties of constraint satisfaction problems related to the consistency of subsets of variables or constraints. They can be used to reduce the search space and make the problem easier to solve. Various kinds of local consistency conditions are leveraged, including node consistency, arc consistency, and path consistency.

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  • Propagation de contraintes (fr)
  • Local consistency (en)
  • Локальна сумісність (uk)
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  • La propagation de contraintes dans le domaine de la programmation par contraintes est le fait de réduire le domaine d'une variable afin de maintenir l'ensemble des valeurs possibles cohérent avec les contraintes du problème. La propagation de contraintes permet ainsi de résoudre un problème si la propagation permet d'établir la cohérence du problème. Les techniques de propagation de contraintes sont utilisées pour réduire la taille de l'espace de recherche lors de la résolution d'un problème de satisfaction de contraintes par un algorithme de recherche arborescente. (fr)
  • Ідея перевірки локальної сумісності лягла в основу швидкого методу , який є значно потужнішим порівняно з . Стани локальної сумісності є властивостями (CSP). Перевірка локальної сумісності забезпечується розширенням методу . Найвідомішими сумісностями є: сумісність дуг, сумісність вузла і сумісність шляху. (uk)
  • In constraint satisfaction, local consistency conditions are properties of constraint satisfaction problems related to the consistency of subsets of variables or constraints. They can be used to reduce the search space and make the problem easier to solve. Various kinds of local consistency conditions are leveraged, including node consistency, arc consistency, and path consistency. (en)
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  • In constraint satisfaction, local consistency conditions are properties of constraint satisfaction problems related to the consistency of subsets of variables or constraints. They can be used to reduce the search space and make the problem easier to solve. Various kinds of local consistency conditions are leveraged, including node consistency, arc consistency, and path consistency. Every local consistency condition can be enforced by a transformation that changes the problem without changing its solutions. Such a transformation is called constraint propagation. Constraint propagation works by reducing domains of variables, strengthening constraints, or creating new ones. This leads to a reduction of the search space, making the problem easier to solve by some algorithms. Constraint propagation can also be used as an unsatisfiability checker, incomplete in general but complete in some particular cases. Local consistency conditions can be grouped into various classes. The original local consistency conditions require that every consistent assignment can be consistently extended to another variable. Directional consistency only requires this condition to be satisfied when the other variable is higher than the ones in the assignment, according to a given order. Relational consistency includes extensions to more than one variable, but this extension is only required to satisfy a given constraint or set of constraints. (en)
  • La propagation de contraintes dans le domaine de la programmation par contraintes est le fait de réduire le domaine d'une variable afin de maintenir l'ensemble des valeurs possibles cohérent avec les contraintes du problème. La propagation de contraintes permet ainsi de résoudre un problème si la propagation permet d'établir la cohérence du problème. Les techniques de propagation de contraintes sont utilisées pour réduire la taille de l'espace de recherche lors de la résolution d'un problème de satisfaction de contraintes par un algorithme de recherche arborescente. (fr)
  • Ідея перевірки локальної сумісності лягла в основу швидкого методу , який є значно потужнішим порівняно з . Стани локальної сумісності є властивостями (CSP). Перевірка локальної сумісності забезпечується розширенням методу . Найвідомішими сумісностями є: сумісність дуг, сумісність вузла і сумісність шляху. (uk)
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