Author: chandler yergin
Date: 15:36:43 11/19/05
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On November 19, 2005 at 17:33:37, Bertil Eklund wrote: >On November 19, 2005 at 05:50:31, Uri Blass wrote: > >>I wonder what happened to the famous learning of the chessbase programs >> >>From the fruit page about future plans: >> >>"Book-learning and position-learning (perhaps but not very likely - >>book-learning is not easy to implement in a UCI-Engine)" >> >>Note that the chessbase programs are supposed to have book learning and I >>remember that old Fritz beated Rebel8 again and again in the same line because >>Rebel did not have book learning. >> >>People could expect based on these observations that Fruit is going to lose >>matches in the ssdf because of lack of learning (or at least to score worse in >>the second half of the match but I do not see it happens). >> >>I wonder if there is a bug in the implementation of learning by chessbase. >> >>Note that based on the match against shredder9 that is supposed to have >>positional learning it seems that positional learning also did not help Shredder >>against fruit. >> >>I did not look at the games of the ssdf to find out but I wonder if the >>opponents of fruit did not try to repeat lines that they beated fruit and I >>wonder if it had no effect(even if they cannot repeat the same lines exactly I >>expect repeating similiar lines to have bigger probability to lead to similiar >>results). >> >>Is there something wrong in my assumptions? >> >>Uri > >Positive learning don't work with (if not the opening are totally winning) >engines like Shredder, Nimzo and Comet for example, because these engines plays >different moves and lines (if not forced) in each and every game because of >hashing (?) or some other factor that makes them play different moves in the >same position. > >Bertil They 'evaluate' every legal move in every position on the board. This becomes the Root position and the Search & Evaluation begins again.
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