Computer Chess Club Archives




Subject: Re: PB-ON vs PB-OFF (final results)

Author: Jeremiah Penery

Date: 15:18:26 10/15/99

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On October 15, 1999 at 12:47:33, Ratko V Tomic wrote:

>I think in the second test you gave the non-pondering program too short time
>given the high guess rate the pondering one would have. Namely if the pondering
>program [Cp] has Tp time per move and the nonpondering one [Cn] has Tn time per
>move, and if the guess rate is G (G=1 if Cp guesses 100% of Cn's moves), then a
>fair play requiring same total thinking time per move implies:
>  G*Tn + Tp = Tn
>which means that for fair play you need time ratio:
>  Tn/Tp = 1/(1-G).
>If the guess rate is 50% (G=0.5) the Cn needs twice as much time allocated. But
>with two Rebels,

>G is probably 80% or greater,

If you have any evidence to support this, please show it.  Otherwise, it is
simply a guess.

>so the Cn needs at least 5 times
>more time per move than the Cp in a fair play. And as G approaches 100% the time
>fair play time ratio goes to infinity.

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