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Pruning for the minimum constraint family and for the number of distinct values constraint family
Number of Authors: 1
2001 (English)Conference paper, (Refereed)
Abstract [en]

The paper presents propagation rules that are common to the minimum constraint family and to the number of distinct values constraint family. One practical interest of the paper is to describe an implementation of the number of distinct values constraint. This is a quite common counting constraint that one encounters in many practical applications such as time tabling or frequency allocation problems. A second important contribution is to provide a pruning algorithm for the constraint "at most n distinct values for a set of variables". This can be considered as the counterpart of Regin's algorithm for the all different constraint where one enforces having at least n distinct values for a given set of n variables.

Place, publisher, year, edition, pages
2001, 1.
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:ri:diva-22592DOI: 10.1007/3-540-45578-7_15OAI: oai:DiVA.org:ri-22592DiVA: diva2:1042157
Conference
Principles and Practice of Constraint Programming (CP 2001): 7th International Conference
Note
Lecture notes in computer science; 2239.Available from: 2016-10-31 Created: 2016-10-31Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
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More styles
Language
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