Author: Uri Blass
Date: 04:43:15 03/01/05
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On March 01, 2005 at 06:23:41, Odd Gunnar Malin wrote: >On March 01, 2005 at 03:22:50, Jouni Uski wrote: > >>2 questions about this "sensational" new feature to experts: >>1) Is it working under Fritz GUI with Shredder 9 UCI? >>2) Is it same thing which has been working years with Yace? >> >>Jouni > >The special with Shredder 9 is that it saves the evaluation when analyzing >(positional learning in analysis mode). I don't think there are any other >engines that do this. With this you can abort your analyses session and come >back to it the next day and it will have saved some of the analysees. > >Keeping the hash when going back and forth isn't unik. At least both Chess Tiger >and Gandalf do it in addition to Yace (also earlier version of Shredder). The advantage of yace relative to part of the engines is not keeping the hash but saving it's analysis There are engines that simply forget after enough time of analysis. Yace will never forget the pv's and the scores unless you turn it off. Yace saves the analysis in special files when it analyze. Unfortunately after turning it off and on it save the learning in different log files and I have yace0001.log,yace0002.log,.... I believe that yace does not look at the hash table but at the logs in order to learn but it only look at the last log so practically it does not remember it's analysis because every time it generates a new log without deleting the old log(instead of adding information to the old log) Here is the content of my yace.ini REM initialization file for Yace ; If you want to put all logfiles in a directory, i.e. first create the ; subdirectory logs and then uncomment the line. ; log_path logs\ auto_log ; Use 30 Megabytes for hash tables. Change this to a size suitable for ; your hardware. You can use numbers like 10.5M, 10.5m, 10500k or 105000000. hash 64M ; set the chache size for endgame tables. Default is 2M. I suggest to use ; not less than 1M and not more than 8M. ; egtb_cache 4M ; Where to find the endgame tables, Nalimov format, compressed or uncompressed ; If you don't have endgame tables, delete the following line ;tbldir e:\egtb tbldir c:\Program Files\Chessbase ; save all my games sgames yacegam.pgn ; positional learning now is on by default book_learn 6 ; to disable book learning, I suggest ; book_learn 4 ; Yes - 4 and not 0, so that Yace will have access to NAGs in dblearn.bin Uri
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