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Adding laziness in BnB-ADOPT+

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Abstract

In distributed constraint optimization, agents executing BnB-ADOPT+ react eagerly to cost changes: they send non-redundant COST messages to their parents as soon as they receive new messages. We have observed that a lazier reaction (not sending COST messages until a condition is met) substantially decrements the number of messages sent and causes only a small variation in ENCCCs. This approach combines nicely with soft arc consistency maintenance during search. We provide experimental evidence of the benefits of this approach on several benchmarks.

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References

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Authors and Affiliations

  1. Dept Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, NT, Hong Kong

    Jimmy H. M. Lee & Wen Su

  2. IIIA - CSIC, Campus UAB, 08193, Bellaterra, Spain

    Pedro Meseguer

Authors
  1. Jimmy H. M. Lee
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  2. Pedro Meseguer
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  3. Wen Su
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Correspondence to Pedro Meseguer.

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Lee, J.H.M., Meseguer, P. & Su, W. Adding laziness in BnB-ADOPT+ . Constraints 20, 274–282 (2015). https://doi.org/10.1007/s10601-014-9177-3

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  • DOI: https://doi.org/10.1007/s10601-014-9177-3

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