Requesting and Submitting Global Constraints

It is recalled from the introduction that this year's competition allows any global constraint defined on integer variables, provided the constraint has been formally requested by some contestant team. Any contestant team requesting a global constraint is expected to submit at least 20 instances that involve the global constraint. Binary, non-binary, extensional and intensional constraints should not be requested.

To request their global constraints, contestant teams are invited to send an email to cspcomp $\left\langle\text{\texttt{at}}\right\rangle$cril.univ-artois.fr. Constraints may be requested until April 10, 2009. A separate email should be sent for each global constraint. The subject of the email should read ``GLOBAL CONSTRAINT REGISTRATION: $\langle$name of the global constraint$\rangle$'' and the body of the email should describe the name of the requesting contestant team and a URL where to find the team's submitted problem instances with the global constraint. It is recalled that there should be at least 20 such instances. The name and semantics of the global constraint must correspond to the definition of the global constraint catalog (http://www.emn.fr/x-info/sdemasse/gccat/).

Details of the specification format for global constraints may be found in the document entitled XML Representation of Constraint Networks which may be downloaded from http://www.cril.fr/~lecoutre/research/benchmarks/. This document also presents examples.