[computer-go] use for Monte Carlo on 19X19?
Don Dailey
drdailey at cox.net
Tue Nov 6 06:00:27 PST 2007
AnchorMan uses that in KGS mode - it will pass quite early sometimes and
mark dead stones based on the territory statistics you are talking
about.
So I assume the play-outs are chinese and the move selection is the same
as our bots except you won't move into an intersection that is owned by
either player?
How reliable is that? I had to be pretty conservative in AnchorMan
about using that, it would fail to defend territory unless I made the
threshold for ownership pretty high.
- Don
Lars wrote:
> I had build an Monte-Carlo GO-Engine (GOMonCy) wich uses the Japanese
> scoring system. It reached a win rate against GnuGO 3.6 level 10 of
> stable 50%-52%. I used territorry-statistics about the Monte-Carlo
> outcomes. You get a probability for every field telling you who is the
> owner. It works quite good, but I thougt that nearly everyone is using
> such statistics, isnt't it? Using a threshold to decide that a field
> belongs to a player you can also handle seki situations. Of course, if
> it is losing, the engin will break the seki situation an continue
> losing..
>
> Am Montag, den 05.11.2007, 16:54 -0800 schrieb forrestc at adnc.com:
>
>> Jason House said:
>>
>>> What about seki situations?
>>>
>>> On Nov 5, 2007 1:41 PM, <forrestc at adnc.com> wrote:
>>>
>>>
>>>> It takes some tricky analysis to work out the Japanese score, due to
>>>> uncertainty about life/death; likewise it's not easy for a program to
>>>> recognize when moving is no longer to its advantage.
>>>>
>>>> How about bringing in a Monte Carlo routine after both players have
>>>> passed?--as a scoring referree, set to fill up the board (but avoiding
>>>> eye-filling
>>>>
>> -------------------------------------------------------------------
>> -->> and self-atari (except in ko situations) <<--
>> -------------------------------------------------------------------
>>
>>>> until all legal
>>>> moves are played...
>>>>
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