I cannot give you Snowie error rates for the several settings, but I can give
you an estimated FIBS rating for various noise settings. These results come
from a bot I ran in 2006; I let it play with different settings for noise. The
following table are maximum likelihood estimates and 95% CI's based on 67000
matches:
Setting plies noise*1000 FIBS 95% CI
------------------
supremo 2 0 2106 (2075, 2138)
expert 0 0 2035 (2011, 2061)
?? 0 7 1958 (1909, 2008)
advanced 0 15 1825 (1776, 1874)
?? 0 22 1643 (1594, 1691)
?? 0 31 1468 (1413, 1522)
intermediate 0 40 1220 (1169, 1270)
casual player 0 50 940 (888, 992)
beginner 0 60 714 (664, 764)
Looking at the table, I would say that the noise settings for intermediate,
casual player and beginner are set too high.
A few remarks: (1) The bot played only 1 ptrs. (2) Results are based on a 2005
version of GNU Backgammon. Nets have recently improved. (3) Due to droppers the
estimates are prolly 5-10 biased downwards.
Gr, boomslang
On Friday, 28 February 2014, 17:55, Timothy Y. Chow <tc...@alum.mit.edu> wrote:
In the GNU documentation it says the following about predefined settings:
>
>Beginner: This setting uses no lookahead and adds up to 0.060 noise to the
>evaluation. With this setting GNU Backgammon will evaluate like a
>beginner.
>
>Casual play: This setting uses no lookahead and adds up to 0.050 noise to
>the evaluation. With this setting GNU Backgammon will evaluate a bit
>better than the beginner setting but not much.
>
>Intermediate: This setting uses no lookahead and adds up to 0.030 noise to
>each evaluation. It still plays an intermediate game.
>
>Advanced: This setting uses no lookahead and adds up to 0.015 noise to
>each evaluation. This setting plays a good game.
>
>My question is, approximately what Snowie error rate do these settings
>translate into? Has anyone tested this out?
>
>Tim
>
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>
>
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