Author: Ryan B.
Date: 00:01:34 10/15/05
Go up one level in this thread
Nice find on the pawn value thing and I agree about the change being too
conservative.
On October 15, 2005 at 02:45:52, Thomas Gaksch wrote:
>Hello Jonas,
>it is great that you try new settings. But i think you changed your settings to
>conservative. To raise the value to 102 changes nearly nothing. Of course i only
>know how these settings are calculated in fruit 2.1 but i thing this hadn´t
>changed in fruit 2.2. in fruit 2.1 the calculations are as follows:
>
>PawnStructureWeight = (option_get_int("Pawn Structure") * 256 + 50) / 100;
>pawn_eval=((opening[White] - opening[Black]) * PawnStructureWeight) / 256;
>for example:
>PawnStructureWeight = (102 * 256 + 50) / 100;
>=> PawnStructureWeight = 261
>opening[White] is the evaluation for the white pawn structure.
>opening[Black] is the evaluation for the black pawn structure.
>say opening[White] = 60 and opening[Black] = 10
>then pawn_eval = ((60 - 10) * 261) / 256 = 50.97 => pawn_eval = 50
>thats the same score as the default value Pawn Structure 100
>so my suggestion would be to raise the value much higher than only by 2.
>
>regards
>thomas
>
>
>On October 14, 2005 at 16:01:11, Jonas Cohonas wrote:
>
>>On October 14, 2005 at 08:36:17, Joachim Rang wrote:
>>
>>>...but now you really have to reveal your settings. I'm very curious.
>>>
>>>Joachim
>>
>>Everything default except:
>>
>>Pawn Structure 102
>>Passed Pawns 102
>>Pawn 102
>>
>>BTW after 12 games:
>>
>>1 Fruit 2.2 v01 XXXXXX 1½1111 5.5 / 6 2.75 91.67%
>>2 Shredder 9 UCI 0½0000 XXXXXX 0.5 / 6 2.75 8.33%
>>
>>1 Fruit 2.2 v01 XXXXXX 1½1110 4.5 / 6 6.75 75.00%
>>2 Shredder 9 UCI 0½0001 XXXXXX 1.5 / 6 6.75 25.00%
>>
>>Regards
>>Jonas
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