Re: computer-go: Pattern matching

[David Fotland <fotland@xxxxxxxxxxxxxxx>]

Yes.  I know that Go Intellect has a wide variety of
opening patterns and so can play reasonable openings
without using a joseki library.

David

At 06:08 PM 11/8/99 -0500, Gary  Boos wrote:
>Thank you.
>Do you think opponents (of similar caliber) have better/more detailed
>approaches than MFG ?
>        Gary
>-------------
>-------------
>-----Original Message-----
>From: David Fotland <fotland@xxxxxxxxxxxxxxxxx>
>To: computer-go@xxxxxxxxxxxxxxxxx <computer-go@xxxxxxxxxxxxxxxxx>;
>computer-go@xxxxxxxxxxxxxxxxx <computer-go@xxxxxxxxxxxxxxxxx>
>Date: Sunday, November 07, 1999 3:34 AM
>Subject: Re: computer-go: Pattern matching
>
>
>>At 03:56 PM 11/6/99 -0500, Gary  Boos wrote:
>>>MFG has a "...seperate database..."  for the opening.
>>>MFG got outplayed in the opening by SmartGo at the congress.
>>>Can you comment on the code (i.e. not the database) that is
>>>used to help play the opening (which seems to be a weak
>>>area for MFG) ?
>>>        Gary
>>
>>The opening is a weak area for Many Faces, mostly because I
>>rely too much on rote knowledge rather than detailed
>>opening patterns.  MF has a big full board opening database
>>collected from thousands of games.  I use it to bias the
>>evaluation toward moves that are more popular.  It also has
>>a big joseki database.  Beyond that there is very little
>>opening code.  If there is a joseki move available in a corner,
>>it will not consider non-joseki moves in that corner.  Sometimes
>>this causes big problems when sequences in one corner spill
>>over toward the next corner.  This rule sometimes prevents
>>the program from making the correct extension.
>>
>>I force a move in an empty corner if one is available.
>>
>>I have some code to evaluate moves in empty corners to encourage
>>connected 4-4 corners or shusaku style spiraling 3-4 points.
>>
>>I try to prevent giving opponent two shimari.
>>
>>I have some code to evaluate edge extensions and invasions, but it
>>is not very good.  I wrote it when I was about 10 kyu, and haven't
>>worked on it much since.
>>
>>I try to make or prevent double wing formations.
>>
>>David
>>
>>
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