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Improved Speedup Bounds for Parallel Alpha-Beta Search
January 1983 (vol. 5 no. 1)
pp. 89-92
Raphael A. Finkel, Department of Computer Sciences, University of Wisconsin, Madison, WI 53706.
John P. Fishburn, Bell Laboratories, Murray Hill, NJ 07974.
In this paper we investigate the ``mandatory-work-first'' approach to parallel alpha-beta search first proposed by Akl, Barnard, and Doran. This approach is based on a version of alpha-beta search without deep cutoffs and a two-stage evaluation process, the second stage of which is often pruned. Our analysis shows that for best-first ordering on the lookahead tree, this approach provides greater speedup than the Palphabeta tree-splitting technique, and that for worst-first ordering, mandatory work first provides only slightly worse speedup than Palphabeta.
Raphael A. Finkel, John P. Fishburn, "Improved Speedup Bounds for Parallel Alpha-Beta Search," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 5, no. 1, pp. 89-92, Jan. 1983, doi:10.1109/TPAMI.1983.4767350
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