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Re: [Bug-gnubg] FIBS rating and error rates
From: |
Joern Thyssen |
Subject: |
Re: [Bug-gnubg] FIBS rating and error rates |
Date: |
Thu, 21 Aug 2003 16:11:01 +0000 |
User-agent: |
Mutt/1.4.1i |
On Thu, Aug 21, 2003 at 08:00:13AM +0200, address@hidden wrote
> One issue in the rating formula is that I weigh moveErr and cubeErr by
>
> errTot = moveErr/X + C*cubeErr/X, with
> X=(unforcedMoves+unforcedCubedecisions), and C=1, and assume R depends
> on errTot only.
I can't explain why, but I would rather see
errTot = ( (1-C) * moveerr + C * cubeerr)/X
>
> Some exploratory simulations indicate C<1. i.e., cube errors are not
> as important as is assumed.For example an errTot = .015 predicts
> R=300 but if entirely due to cube errors R = 116.
>
> I would like to refine the R estimate by doing some simulations where
> I vary move and cube errors independently.
>
> Please point me to any relevant previous work on this subject....
I can't recall having seen anything.
Note that Snowie uses another errTot:
errTot = (moveErr + cubeErr) /
(total moves player 1 + total moves player2)
Jørn
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[Bug-gnubg] Re: FIBS rating and error rates, kvandoel, 2003/08/26
Re: [Bug-gnubg] FIBS rating and error rates,
Joern Thyssen <=
Re: [Bug-gnubg] FIBS rating and error rates, kvandoel, 2003/08/22