Three Generalizations of the FOCUS Constraint

22 Apr 2013  ·  Nina Narodytska, Thierry Petit, Mohamed Siala, Toby Walsh ·

The FOCUS constraint expresses the notion that solutions are concentrated. In practice, this constraint suffers from the rigidity of its semantics. To tackle this issue, we propose three generalizations of the FOCUS constraint. We provide for each one a complete filtering algorithm as well as discussing decompositions.

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