Author: Bryan Hofmann
Date: 17:03:53 02/01/04
Go up one level in this thread
On February 01, 2004 at 19:03:56, Mike Byrne wrote: >On February 01, 2004 at 12:50:11, David Dahlem wrote: > >>On February 01, 2004 at 11:48:39, Mike Byrne wrote: >> >>>On February 01, 2004 at 11:18:45, David Dahlem wrote: >>> >>>>I see the source for Crafty 19.10 is now available at .... >>>> >>>>ftp://ftp.cis.uab.edu/pub/hyatt/v19/crafty-19.10.zip >>>> >>>>What are the changes in this version? Is this the version playing in CCT6? >>>> >>>>Regards >>>>Dave >>> >>>from main.c: >>> >>> >>> ******************************************************************************* >>> * 19.10 a fix to the EvaluateWinner() code to recognize that while KRB vs * >>> * KR can not normally be won by the KRB side, we require that the * >>> * KR side not be trapped on the edge of the board, where it can be * >>> * mated. FUTILITY code put back in. 19.9 will be the SE version * >>> * for those wanting to play with it. new "learn" command option to * >>> * allow the user to set the position learning parameters that are * >>> * used to trigger position learning and disable position learning * >>> * after the game is already lost. the command syntax is as follows * >>> * "learn trigger cutoff" and are expressed as fractions of a pawn * >>> * with a decimel point. the default is learn .33 -2.0 which says * >>> * to do position learning when the score drops 1/3 of a pawn, but * >>> * turn it off after the score reaches -2.00 as the game is already * >>> * lost and learning won't help at this point. this is the CCT-6 * >>> * version exactly as played in the CCT-6 tournament. * >>> * * >>> ******************************************************************************* >>> >>>I had not realzied that there was newer version --- so Crafty 19.09 SE will not >>>be released :( >>> >>>-- I will start working on Crafty 19.10 SE, since this version appears to be >>>the "keeper" here. All my changes made to 19.09 will be carried over to 19.10 >>>SE :>) >> >>Do you recommend deleting the old position.lrn file, since this version has a >>new learn command option? >> >>Regards >>Dave > >yes ..I would delete the the *.lrn file for every version -- because every >version has the potential to evaluate things differently - no sense in mixing >apples and oranges The .lrn file is nothing more then a ASCII text file for humans to see what as been placed in the .bin files. So deleting them has no effect on Crafty as it does not use them to play. Having said this, yes I would recommend that you delete both the position.bin and position.lrn files as many evals have changed and the new learning function change things enough to do so.
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