Author: Robert Hyatt
Date: 09:30:54 12/01/02
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On December 01, 2002 at 00:14:10, Joshua Haglund wrote: >On November 30, 2002 at 23:33:18, Robert Hyatt wrote: > >>On November 30, 2002 at 12:23:39, Joshua Haglund wrote: >> >>>Robert, >>> >>>What is the intention of limiting the position.bin file to 1 mb? >>> >>>Is it possible for you to make the limit 2 mb in the next release? >>> >>>How much "learn" do you have, and will you share it? ;) >>>(book.lrn && position.lrn) >>> >>>Thanks much, >>> >>>Joshua >>>toneewa@yahoo.com >> >> >>I limited it to (I think) 65536 positions. For several reasons. >> >>1. that kind of learning is very time-dependent. It is really intended >>to solve problems caused where a clever opponent takes you out of book really >>quickly, then "feels" his way around to a winning-type position and then tries >>it repeatedly on a chess server to inflate his rating. This kind of learning >>makes that _very_ difficult to do in a series of games. >> >>2. The data is stuffed into the hash table as "permanent" entries. If the >>file gets bigger, then you lose hash table entries, for positions you will >>probably never see anyway. >> >>I don't publish the position.bin learn files as they are very opponent-specific >>and also _highly_ version-specific since they contain specific evaluations and >>search results that a different version might disagree with... >> >>I delete mine weekly, for example.... > >Thanks for your reply! > >How about your book_lrn file? > >If it isn't any trouble I wouldn't mind your position.lrn files. :) > >Joshua >toneewa@yahoo.com I usually keep a fairly recent book.lrn file on my ftp machine, but remember that I delete _all_ learning with a relatively high frequency, because as the program changes, the "learning results" become less accurate... When the ftp machine is back up, I'll post whatever I have that is most recent...
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