Generalizing ADOPT and BnB-ADOPT

  • Authors:
  • Patricia Gutierrez;Pedro Meseguer;William Yeoh

  • Affiliations:
  • IIIA - CSIC, Universitat Autònoma de Barcelona, Bellaterra, Spain;IIIA - CSIC, Universitat Autònoma de Barcelona, Bellaterra, Spain;Computer Science Department, University of Massachusetts, Amherst, MA

  • Venue:
  • IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume One
  • Year:
  • 2011

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Abstract

ADOPT and BnB-ADOPT are two optimal DCOP search algorithms that are similar except for their search strategies: the former uses best-first search and the latter uses depth-first branch-and-bound search. In this paper, we present a new algorithm, called ADOPT(k), that generalizes them. Its behavior depends on the k parameter. It behaves like ADOPT when k = 1, like BnB-ADOPT when k = ∞ and like a hybrid of ADOPT and BnB-ADOPT when 1 k k) is a correct and complete algorithm and experimentally show that ADOPT(k) outperforms ADOPT and BnB-ADOPT on several benchmarks across several metrics.