Author: Dann Corbit
Date: 10:06:08 02/18/05
(A) (B)ook (E)xperiment -- what's a book worth? I ran the contest on two machines. On the Windows 2000 machine, I had a hundred pop-ups about polyglot failures, so I do not trust those results at all. On the other Windows 2003 AS machine (2.2 GHz), here is the result: Program Elo + - Games Score Av.Op. Draws 1 Polyglot fruit-book : 2578 53 65 117 64.5 % 2474 21.4 % 2 Polyglot glaurung-book : 2531 59 60 117 56.0 % 2489 16.2 % 3 Polyglot glaurung-no-book: 2453 63 57 117 41.0 % 2516 17.1 % 4 Polyglot fruit-no-book : 2439 68 55 117 38.5 % 2520 13.7 % I think a lot more games would be needed to achieve certainty, but it appears at first glance that even an automatically generated book does provide some benefit. Both Fruit and Glaurung used the polyglot book, and I renamed the Glaurung book so that when the polyglot book was removed no book would be in play.
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