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Revisiting constraint-directed search
RISE, Swedish ICT, SICS.
2007 (English)In: Proceedings of LSCS'07, the 4th International Workshop on Local Search Techniques in Constraint Satisfaction, 2007, 1Conference paper, (Refereed)
Abstract [en]

We revisit the exploration of constraint-directed neighbourhoods, where a (small) set of constraints is picked before considering the neighbouring configurations where those constraints have a decreased (or preserved, or increased) penalty. Given the semantics of a constraint, such neighbourhoods can be represented via new attributes or primitives for the corresponding constraint object. We show how to define these neighbourhoods for set constraints, whether built-in or specified in monadic existential second-order logic. We also present an implementation of the corresponding primitives in our local search framework. Using these new primitives, we show how some common local-search algorithms are simplified, compared to using just a variable-directed neighbourhood, while not incurring any run-time overhead.

Place, publisher, year, edition, pages
2007, 1.
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:ri:diva-23577OAI: oai:DiVA.org:ri-23577DiVA: diva2:1042653
Conference
4th International Workshop on Local Search Techniques in Constraint Satisfaction, 23 Sept 2007, Providence, Rhode Island, USA
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2017-07-27Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
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