Author: Mike Byrne
Date: 19:50:49 02/01/04
Go up one level in this thread
On February 01, 2004 at 20:03:53, Bryan Hofmann wrote: >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. I didn't say that -- but that is what I meant. Thanks for the clarification. You want to reset the learing with every version or if you upgrade the machine.
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