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Agile Asynchronous Backtracking for Distributed Constraint Satisfaction Problems

Abstract : Asynchronous Backtracking is the standard search procedure for distributed constraint reasoning. It requires a total ordering on the agents. All polynomial space algorithms proposed so far to improve Asynchronous Backtracking by reordering agents during search only allow a limited amount of reordering. In this paper, we propose Agile-ABT, a search procedure that is able to change the ordering of agents more than previous approaches. This is done via the original notion of termination value, a vector of stamps labelling the new orders exchanged by agents during search. In Agile-ABT, agents can reorder themselves as much as they want as long as the termination value decreases as the search progresses. Our experiments show the good performance of Agile-ABT when compared to other dynamic reordering techniques.
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Submitted on : Wednesday, May 25, 2011 - 11:04:57 PM
Last modification on : Friday, October 22, 2021 - 3:07:33 PM
Long-term archiving on: : Thursday, March 30, 2017 - 10:38:14 AM


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  • HAL Id : lirmm-00595688, version 2



Christian Bessière, El Houssine Bouyakhf, Younes Mechqrane, Mohamed Wahbi. Agile Asynchronous Backtracking for Distributed Constraint Satisfaction Problems. RR-11017, 2011, pp.01-20. ⟨lirmm-00595688v2⟩



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