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Subject: Re: Learning problems of Tiger

Author: Dave Gomboc

Date: 13:35:35 01/18/00

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On January 18, 2000 at 16:30:15, Christophe Theron wrote:

>On January 18, 2000 at 10:32:51, Enrique Irazoqui wrote:
>
>>I noticed that sometimes Tiger keeps playing the same losing opening lines. In
>>the match Tiger-Hiarcs, games 6 and 10 are D10 openings, identical until 14...
>>e6, where Hiarcs shows an evaluation of 0.82 from its point of view. Tiger lost
>>them both. Games 17 and 19 were A45 lines that immediately out of book Hiarcs
>>evaluated as 0.57 in its favor. Again, Tiger lost both games. It seems that
>>there is a learner problem that will allow Tiger to play repeatedly the same
>>losing lines.
>
>
>You are right Enrique. This is not a bug, I would rather call it a design flaw.
>
>I have written a simple learning algorithm because I did not want to invest too
>much time in it. In fact I had almost no time to invest, so I have done my best
>in a very tight schedule.
>
>My philosophy has always been to put my efforts on the real stuff: the engine
>itself.
>
>But I'll have to work harder on the learning system, because as you have heard
>recently, Junior6 is badly taking advantage of this (I have heard it has
>repeated TWELVE TIMES the same won opening in one of the SSDF matches). :(
>
>
>    Christophe

Looks like you'll be doing some comp-comp testing in the future.  Welcome to the
Core Wars saga.

Dave



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