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Subject: Re: extensions

Author: Scott Gasch

Date: 17:40:33 08/18/99

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On August 18, 1999 at 19:26:27, Dave Gomboc wrote:

[snip]
>
>Tell us the name of your program too!  How long have you been working on it?
>
>Dave

My program has no name yet... I've been working on it for the past couple of
months (with help from y'all).  It's a PVS w/ null move, killers, history,
transposition tables on a 0x88 board representation.  I am thinking about
calling it "darkhorse" once it gets better.  Right now it is just called "chess"
:)

I am reasonably satisfied with the search speed and tree size.  I've contained
the massive branching in the qeval by using a SEE.  My two major goals in the
short term are to get extensions working without a big speed sacrifice and to
improve the evaluation routine.  I need to work on an opening book too.

Speaking of eval routines: has anyone ever done any genetic programming to learn
the values of the eval routine?  I was thinking of randomly coming up with eval
term coeficients and having the computer play itself.  Then the winner survives
and the loser dies... This way I can hone in on "better" eval routines via
natural selection... anyone done anything like this?

I'll post some samples of the extension explosion when I get home.

Scott



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