Adding appropriate implied constraints can dramatically improve the computational behaviour of a constraint solver on the augmented set of constraints. We briefly document experiments we made with PRESS and clp(q,r) for generating implied constraints.
This report is an excerpt (namely Sections 5.1, 5.2, and 5.3, which are included verbatim apart from minor cosmetic, non-technical corrections) from an unfinished technical report written in August 2000, and thus (finally) provides a citable, published reference to that work.
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