On 3/6/08, Christoph Birk <[EMAIL PROTECTED]> wrote:
> On Thu, 6 Mar 2008, Don Dailey wrote:
>
> > advantageous to give away stones that not.  Despite what many people
>  > believe,  MC programs don't normally believe it's better to win small
>  > and they are not hell-bent on giving away stones in order to try to make
>  > the score come out to be exactly 0.5 win.
>
>
> You are correct that it is not explicitly programmed into the MC
>  programs to win by 0.5 pts, but since most of them don't care about
>  the margin they in practice often do.

You are right, but I think that you may also be misconstruing the
nakade problem as a lack of concern about margin, when it is really a
fundamental failure to understand (i.e., failure to explore
sufficiently) the nakade shapes.  The tendancy for your final scores
on lost games to be 0.5 really reflects a motivation on your own part
to lose by the smallest margin that you can.  After a point when the
game is resolved, this doesn't conflict with the program's goal, so it
lets you do just that.

As an interesting thought, I think that it might actually be
informative for people to try out programs that _do_ try to win by
exactly 0.5!  Not as a fundamental goal, but rather as a slight
preference for the endgame.  If authors can do this in a manner that
does not degrade the playing ability much, then human players might be
able to see even more clearly what life & death errors a program
makes, and at what point it is able to discover the correct solution.
Clearly the programs would be weaker like this, but I think it could
expose some systematic problems very quickly, so that they could be
focused on.

Weston
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