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Subject: Re: The importance of opening books -- a simple experiment

Author: Arturo Ochoa

Date: 23:51:31 02/18/05

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On February 19, 2005 at 02:39:34, Uri Blass wrote:

>On February 19, 2005 at 01:40:16, Sandro Necchi wrote:
>
>>On February 18, 2005 at 19:19:31, Uri Blass wrote:
>>
>>>On February 18, 2005 at 18:52:58, Arturo Ochoa wrote:
>>>
>>>>On February 18, 2005 at 18:12:18, Sune Fischer wrote:
>>>>
>>>>>On February 18, 2005 at 13:29:56, Arturo Ochoa wrote:
>>>>>
>>>>>>>Yes but what is "help a lot"?
>>>>>>
>>>>>>Look the answer: 30% of the total score reached by Diep in testings and 25% of
>>>>>>the total score reached by Zappa in private tests. The books was responsible of
>>>>>>30% and 25% of the score reached for every mentioned engine.
>>>>>
>>>>>I'm not quite sure what that means actually.
>>>>>
>>>>>If your score is 20% and you improve that by 30% you score will be 26% which is
>>>>>a rating increase of 59 Elo.
>>>>>
>>>>>If the score improves 30% from 50% to 65% it's a 107 Elo.
>>>>>
>>>>>If the score improves by 30% from 35% to 65% it's 240 Elo.
>>>>>
>>>>>If the score improves by 30% from 60% to 90% it's 320 Elo.
>>>>>
>>>>>-S.
>>>>
>>>>These assumptions are absolutely wrong. It is a common problem in this Forum of
>>>>asserting things that I have not said.
>>>>
>>>>"Look the answer: 30% of the total score reached by Diep in testings and 25% of
>>>>the total score reached by Zappa in private tests. The books was responsible of
>>>>30% and 25% of the score reached for every mentioned engine.
>>>>I'm not quite sure what that means actually."
>>>>
>>>>Example: If Diep played 10 games, and it won 10 games, 3 games were because of
>>>>the book. Do you understand? A direct win because of the book.
>>>>
>>>>AO--
>>>
>>>It means that diep scored 10/x in your testing with book when 7/x was without
>>>book when x is unknown.
>>
>>No, not necessarely.
>>
>>We weed to define what one means to the book first.
>>It could be thanks to the book even if the program does not come out of the
>>opening with a winning advantage: i.e. a small plus but the program play very
>>well out of that position.
>>If the program got a position that handles very well with book x, than book x
>>did very well and has part of the win merit.
>
>
>I agree
>I did not say "3 direct wins out of book"
>I know that:
>1)it can be earning draw instead of loss in some cases
>2)I did not translate direct wins out of book to winning position and I assumed
>that the poster include also cases that the position out of book was not winning
>but the program knew to play it better than the opponents and getting that type
>of position was planned so the wins were result of book.
>
>Uri


More incorrections. It seems to that you mathematics are failing everywhere. How
can I explain you?



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