Akgun, Ozgur, Gent, Ian Philip, Jefferson, Christopher Anthony et al. (2 more authors) (2014) Breaking conditional symmetry in automated constraint modelling with CONJURE. In: ECAI 2014. IOS Press , pp. 3-8.
Abstract
Many constraint problems contain symmetry, which can lead to redundant search. If a partial assignment is shown to be invalid, we are wasting time if we ever consider a symmetric equivalent of it. A particularly important class of symmetries are those introduced by the constraint modelling process: model symmetries. We present a systematic method by which the automated constraint modelling tool CONJURE can break conditional symmetry as it enters a model during refinement. Our method extends, and is compatible with, our previous work on automated symmetry breaking in CONJURE. The result is the automatic and complete removal of model symmetries for the entire problem class represented by the input specification. This applies to arbitrarily nested conditional symmetries and represents a significant step forward for automated constraint modelling.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 The Authors and IOS Press. This work was supported by UK EPSRC EP/K015745/1. Jefferson is supported by a Royal Society University Research Fellowship. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Computer Science (York) |
Depositing User: | Pure (York) |
Date Deposited: | 27 Mar 2019 11:40 |
Last Modified: | 29 Oct 2024 01:15 |
Published Version: | https://doi.org/10.3233/978-1-61499-419-0-3 |
Status: | Published |
Publisher: | IOS Press |
Identification Number: | 10.3233/978-1-61499-419-0-3 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:144176 |
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