Author: Robert Henry Durrett
Date: 06:03:29 09/09/98
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On September 08, 1998 at 23:36:05, Serge Desmarais wrote: <snip> >Now here is HOW Fritz picks its moves : at base, it takes the popularity of the >move (% of times played) and then balance it with the % of wins (score), ratings >of the players and performance rating of the moves (don't ask me the >mathematical formula!) to decide a percentage of chance of playing it in a game. >Later, it will refine this percentage by adding a value based on its "learned >experience" when playing that move (you can also manually change the scores). >But you have to know that Fritz will NEVER play a move that was played only ONCE >if there are much more popular choices. It will NEVER play a move that has lost >100% of the time or has a sensible negative score (UNLESS it is the ONLY move in >book for that position, and even in that case it would have avoided the line >earlier). In the Fritz basic book, there are NO preset values (manually >adjusted) for any move. It contains over a million moves/positions with all the >known main lines for every major opening. <snip> Serge, please forgive me for this, but I do not find the above to be "crystal clear." Maybe it's just me, I don't know. What do you mean by "balance it"? What do you mean by "refine this percentage by adding"? What do you mean by "sensible"? What, exactly, [if you know] determines which specific opening it will play next? Doesn't it's opponent have something to say about that? Thanks in advance for your clarification.
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