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Re: Peter Tax   Message List  
Reply | Forward Message #32 of 96 |
Re: [abalone_prog] Re: Speed of Tax Abalone


Le 10 janv. 06 à 22:35, peer_sommerlund a écrit :

> My French is not really good, but if I understand
> the discussion between David and Stéphane correctly
> David argues that Tax Abalone must be slow. Stéphane
> argues that this is not the case, due to the limited
> branching that Stéphane added to the alpha-beta
> algorithm: For non-leaf nodes he does a 1 or 2 ply
> search (depending on distance to leaves), and keeps
> only the 6 best moves for the full depth search.


That's quite a good recollection of the discussion.
You see, your French is perfect :-)


> I am not yet done with merging the source code, but
> a quick comparison of version Tax abalone 1.5.3 (which
> is the code base I have) and the current version of
> Nacre, shows that Tax abalone is pretty fast: 6 ply
> in 1 sec, whereas Nacre does only 3-4 ply in 1 sec.
> I played only one blitz game of 1 sec/move, and Nacre
> won this 6-0 despite the large difference in search
> depth. Thus, speed is not always enough.

This is what makes Abalone a complex, interesting game...



> When I have merged version 2.0 with my version 1.5.3,
> I will return with more test results.
> Peer


Thanks again !

































































... /// ... \\\ ...





Wed Jan 11, 2006 12:31 am

s2001nicolet
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Message #32 of 96 |
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... Pour la fonction d'évaluation, les deux meilleures strategies (Epaminondas et Hannibal) utilisent à la fois la compacité (calculée fondamentalement...
Stéphane Nicolet
s2001nicolet
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Jan 9, 2006
4:41 pm

My French is not really good, but if I understand the discussion between David and Stéphane correctly David argues that Tax Abalone must be slow. Stéphane...
peer_sommerlund
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Jan 10, 2006
9:35 pm

... That's quite a good recollection of the discussion. You see, your French is perfect :-) ... This is what makes Abalone a complex, interesting game... ... ...
Stéphane Nicolet
s2001nicolet
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Jan 11, 2006
12:31 am

I read the search algortihm, no hash, nothing special but pure alpha beta, so i wonderred about speed. But the evaluation functions part needs more ...
david.malek@...
mogwaifrance
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Jan 11, 2006
4:52 am

... alpha beta, so i ... proven wrong ... few moves by ... make me ... As I recall this "fixed-move-count" search was made popular by the famous "Chess"...
peer_sommerlund
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Jan 11, 2006
8:34 am

MLA 2.0 uses a percentage of moves at node level for levels >=6, based on a measure of disorder/entropy and how strong a move has been evaluated at previous...
david.malek@...
mogwaifrance
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Jan 11, 2006
8:48 am
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