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Subject: Re: learn function of S9 CB vs S9 UCI-to S Nechi/H Conrady

Author: William Penn

Date: 09:17:47 03/25/05

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On March 24, 2005 at 17:09:22, Sandro Necchi wrote:

>On March 24, 2005 at 16:40:19, Rajen Gupta wrote:
>
>>somebody, i think it was Sandro Necchi who had posted earlier that although the
>>engine is identical, the CB an UCI versions have different learn functions.
>>
>>could they elaborate; in particular which of these has a better learning
>>function
>
>I believe UCI has a better learning function than CB.
>
>Sandro

In my many tests with the Shredder9 UCI version which uses a new .pl2 file for
learning, I can't find any evidence of reliable learning! It just doesn't work,
usually.

For example, analyze a position for 1 hour in infinite mode, which should give
it quite a bit of learning. Right?

Then exit the software, reset the computer, reload the software, and bring the
position back up for infinite analysis. It should now benefit from the prior
analysis. Right?

In only about 1 test position in 5 (20% of the time), it remembers the prior
long analysis OK. In about 4 test positions in 5 (80%), it remembers absolutely
nothing, zero, zilch.
WP



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