Computer Chess Club Archives




Subject: Re: New tool to estimate the statistical significance of match results

Author: Rémi Coulom

Date: 13:28:26 07/17/04

Go up one level in this thread

On July 17, 2004 at 14:21:00, Joachim Rang wrote:

>Hi Remi,
>that is exatly what I need right now, thank you very much.
>Unfortunately the MonteCarlo calculation takes really long if I feed in the
>result of two 400 games-gauntlets of two different version. I aborted after 10
>minutes. Any idea how long it might take to compute on my Athlon xp 1540 Mhz? Is
>ther a way to make it a bit less accurate but quicker?
>regards Joachim

I ran a few experiments with 400 games, and it keeps displaying a value of
-1.#IND00, which indicates a division by zero. The program seems to work OK with
200 or 300 games, but not with more. Beyond 300, exponents become too high for
the floating point precision. I may try tomorrow morning to replace the built-in
"long double" type by a more accurate type of the GNU multiprecision library, so
that p^400 is not equal to zero for probabilities p  < 1. That should make the
program applicable to bigger matches.

What are the numbers of your gauntlet matches ?


This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.