Hi David,

Putting some weaker programs on CGOS is a good idea -  I would like to
see it seeded with players of many different strengths.

Olivier is in charge of cgos 19x19 so whatever time he wants to set is
up to him.    I would suggest to him to set a 1 second time gift if he
chooses to play at a faster rate since network will be a real issue with
any who have a lousy connection.  

If the time control is cut in half,  it will probably change the
relative strengths of the programs, because some programs will not be
crippled by the time change and other will.     Here is what I would
predict:

   1.  Gnugo would increase in ranking.
   2.  Your program will increase in rank - but not as much as GnuGo.
   3.  Crazy Stone will drop in rank.   
   4.  Every program will drop in ELO except GnuGo or other non-scalable
programs.

I'm assuming that your program is scalable,  that Crazy Stone is more
scalable and GnuGo is not scalable (in other words it would run just the
same as it does now.)       

So if we decrease the time control,  it will make you look better and
you may get lazy about improving your program.     However, it might
make GnuGo competitive with your program.    I'm of course making
certain scalability assumptions that might not be true. 

My suggest to Olivier is to compromise and set time control 20 minutes
per side and give 1 second gift.

- Don




David Fotland wrote:
> I think there are two reasons there are not more programs on 19x19 CGOS:
>
> 1) The anchor, Gnugo, is quite strong, Many Faces 12 is stronger, and
> CrazyStone is much stronger.  Since the programs playing are so strong, it
> is demoralizing for a new program to lose so often.  Without weaker
> competition, it is hard to get accurate ratings for new, weaker programs.
>
> 2) The rounds take almost an hour, so it takes much too long to get enough
> games to see how your program is doing.  In my local testing, I use 10 or 15
> minutes per side.  I like to see 50 to 100 test games get any confidence
> that a new version is stronger.  I prefer to get a test run complete in
> under a day.
>
> I propose the following changes:
>
> I'll put up 3 weaker versions of Many Faces 12, so there is competition at
> lower ratings.  These versions are quite fast, using only a few seconds for
> a full game.  This will provide some stable opponents for the weaker
> programs.
>
> I think the time limits for CGOS19x19 should be reduced to 10 or 15 minutes
> per side.  This is enough to test programs, and it's still a reasonable time
> limit for games against people.  Since programs that search scale with
> additional time, the relative ratings of these programs should be similar at
> 10 minutes per game and 30 minutes per game.
>
> -David
>
>
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>   
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