Author: Christophe Theron
Date: 10:51:13 07/29/00
Go up one level in this thread
On July 29, 2000 at 08:07:35, blass uri wrote:
>On July 28, 2000 at 15:45:15, Christophe Theron wrote:
>
>>On July 28, 2000 at 01:05:53, Terry Ripple wrote:
>>
>>>Used an AMD K6-2, 266Mhz, 64Ram, Ponder off, 16Mb Hash per engine.
>>>
>>>If anyone cares to see some or all of the games, i will be glad to post them.
>>> This match shows how close the strengths are between these two fine engines!
>>>
>>>Best regards,
>>>Terry
>>>
>>>Blitz:5' 2000
>>>
>>>
>>>1 Fritz 6 158.0/306
>>>2 Hiarcs 7.32 148.0/306
>>
>>
>>
>>No offense intended Terry, but you cannot say with this match which program is
>>the best.
>>
>>The result of this match is 51.63% in favor of Fritz.
>>
>>I don't have the typical margin of error for 306 games, but I know that for 400
>>games it is +/-2.5% (80% confidence) and +/-2.1% (70% confidence).
>
>using who is better that assumes the binomical distribution I found
>loser score 191 and 80% certainty: the required wins are 209=52.3%
>loser score 194 and 70% certainty: the required wins are 206=51.5%
>
>so I got
>+/-1.5%(70% confidence) and +/-2.3%(80% confidence).
>The practical number is different because there are draws and should be lower
>than 1.5% for 70% and 2.3% for 80%
>
>Uri
Ernst Heinz in his book "Scalable Search In Computer Chess" gives a formula. I
should use this one instead I suppose.
Christophe
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