Perhaps computers play better (so far) when they focus on the wins because they 
are not omniscient; they can get suckered into thinking that large groups are 
alive or dead when the reverse is actually true. Humans are better at 
"chunking" life-and-death status of independent groups.

( Newell and Simon, Cognitive Science, Chunking hierarchies )

http://en.wikipedia.org/wiki/Chunking_%28psychology%29


Terry McIntyre <terrymcint...@yahoo.com>


Anarchism is founded on the observation that since few men are wise enough to 
rule themselves, even fewer are wise enough to rule others. - Edward Abbey



________________________________
From: Don Dailey <dailey....@gmail.com>
To: computer-go <computer-go@computer-go.org>
Sent: Mon, November 23, 2009 8:21:15 AM
Subject: Re: [computer-go] Re: Hahn system tournament and MC bots

I have repeatedly stated that the Hahn system is a simplification,  but this is 
just a guess on my part and I might have it backwards.    I'm not sure whether 
that invalidates the idea that computers will play this better or not.

Here is a thought experiment.    Imagine an omniscient  player or program which 
is capable of always playing the very best move according to either criteria 
that you configure.    You can configure it maximize the score, or to win the 
game.     

In win game mode it will play ANY move randomly that is "good enough."   Since 
it is omnicient there is no point in talking about risk,  or chances in any 
context.     In a lost game it would play a move at random.

In maximize score mode it would choose the move that maximizes the total points 
taken on the board.  It would be the perfect Hahn system player for instance.   

The more difficult strategy is to maximize total points on the board.    In 
fact, this is a superset of the other strategy because maximizing the points 
taken will always be a valid way to implement the "try to win game" strategy,  
but the reverse is not true.

This is no doubt why computers play stronger with the goal to win the game - it 
is a much less distracting concept for a computer to grasp.

So I am not sure, but I might be reversing my point of view on this.    I have 
to think about it some more.   It's clear that computers play weaker with this 
strategy, but I'm still pretty sure they will play the Hahn system better with 
the maximize points taken strategy but it may not follow that they will play 
this better relative to humans.    Especially if it is a more challenging goal. 
    What I cannot decide is if it is really more challenging - I just know it's 
more challenging to do it perfectly.   

- Don








On Mon, Nov 23, 2009 at 11:00 AM, Robert Jasiek <jas...@snafu.de> wrote:

steve uurtamo wrote:
>
>>>the idea that i like about keeping track of number of points won or
>>>>lost by is that not only could you find the winner, but you could find
>>>>how absolutely dominant, on average, they were against their
>>>>opponents.
>>
>
>Under normal Go: no! E.g., some players have the style to let every game be 
>close.
>
>>-- 
>
>>robert jasiek
>>_______________________________________________
>>computer-go mailing list
>computer-go@computer-go.org
>http://www.computer-go.org/mailman/listinfo/computer-go/
>



      
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