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Re: [Bug-gnubg] Re: Confidence intervals from rollouts
From: |
Joern Thyssen |
Subject: |
Re: [Bug-gnubg] Re: Confidence intervals from rollouts |
Date: |
Thu, 5 Sep 2002 19:30:58 +0000 |
User-agent: |
Mutt/1.4i |
On Thu, Sep 05, 2002 at 12:25:09PM -0700, David Montgomery wrote
> > Actually thrice :-)
>
> As long as we are counting, we should count Fredrik Dahl,
> who I believe did it first, for a total of four. :-)
>
> > Gary's rollout code from rollout.c has:
> >
> > for( i = 0; i < cGames; i++ ) {
> > if( prc->rngRollout != RNG_MANUAL )
> > InitRNGSeed( rcRollout.nSeed + ( i << 8 ), prc->rngRollout );
> >
> > Since gnubg doesn't change the seed between rollouts of different moves
> > the same dice sequence will be used for each game.
>
> This gives duplicate dice, but unless I'm mistaken it
> doesn't do stratified sampling (perfect distribution
> of rolls at every depth).
You're not mistaken :-) I think it would require quite some work to
implement that.
Jørn
--
Joern Thyssen, PhD
Vendsysselgade 3, 3., DK-9000 Aalborg, Denmark
+45 9813 2791 (private) / +45 2077 2689 (mobile) / +45 9633 7036 (work)
- [Bug-gnubg] Confidence intervals from rollouts, Douglas Zare, 2002/09/03
- Re: [Bug-gnubg] Confidence intervals from rollouts, David Montgomery, 2002/09/03
- Re: [Bug-gnubg] Confidence intervals from rollouts, nis, 2002/09/04
- Re: [Bug-gnubg] Confidence intervals from rollouts, David Montgomery, 2002/09/04
- [Bug-gnubg] Re: Confidence intervals from rollouts, pepster, 2002/09/05
- Re: [Bug-gnubg] Re: Confidence intervals from rollouts, Joern Thyssen, 2002/09/05
- RE: [Bug-gnubg] Re: Confidence intervals from rollouts, David Montgomery, 2002/09/05
- Re: [Bug-gnubg] Re: Confidence intervals from rollouts,
Joern Thyssen <=
- [Bug-gnubg] Re: Confidence intervals from rollouts, pepster, 2002/09/06
- Re: [Bug-gnubg] Confidence intervals from rollouts, Nis Jorgensen, 2002/09/05
- Re: [Bug-gnubg] Confidence intervals from rollouts, David Montgomery, 2002/09/05
- Re: [Bug-gnubg] Confidence intervals from rollouts, Douglas Zare, 2002/09/05
- RE: [Bug-gnubg] Confidence intervals from rollouts, David Montgomery, 2002/09/05
- Re: [Bug-gnubg] Confidence intervals from rollouts, Joern Thyssen, 2002/09/05
- Re: [Bug-gnubg] Confidence intervals from rollouts, Joern Thyssen, 2002/09/08
- Re: [Bug-gnubg] Confidence intervals from rollouts, Joern Thyssen, 2002/09/05