A constraints language, built on the top of an object system is described. Constraints are arranged in a hierarchy and they represent prototypes of constraint-arcs, which are defined intentionally by an assertive language. Preprocessing techniques are exploited and a variety of algorithms are used to find solutions both inferred and allowed by the constraint-arcs. The "Eight Queens" problem is used in the paper as example
COOL: an Object System with Constraints
Avesani, Paolo;Perini, Anna;Ricci, Francesco
1990
Abstract
A constraints language, built on the top of an object system is described. Constraints are arranged in a hierarchy and they represent prototypes of constraint-arcs, which are defined intentionally by an assertive language. Preprocessing techniques are exploited and a variety of algorithms are used to find solutions both inferred and allowed by the constraint-arcs. The "Eight Queens" problem is used in the paper as exampleFile in questo prodotto:
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