Hi,
What's an usual winning rate for black/white from an empty 9x9 board, black
playing first, 7.5 komi? I play 50k games when starting my program, and I
usually get around 60% winning rate for white. This seems rather high to me,
and I suspect a bug somewhere. Do you have any data I could
On Thu, 2009-01-08 at 19:27 +0100, i...@gmx.ch wrote:
Hi,
What's an usual winning rate for black/white from an empty 9x9 board, black
playing first, 7.5 komi? I play 50k games when starting my program, and I
usually get around 60% winning rate for white. This seems rather high to me,
and
ibd asked:
what's an usual winning rate for black/white from an empty
9x9 board, black playing first, 7.5 komi? I play 50k games
when starting my program, and I usually get around 60%
winning rate for white. This seems rather high to me, and I
suspect a bug somewhere. Do you have any data
It seems normal to me, Blac is only one play ahead, which value is several
points (probably 7,5 hence the komi value) given intelligent play, given
random play the value of one more move may be only one point.
You should try with more komi value to see which is the fair komi value for
random play
Sounds about right. Looking at my notes, I have 57% wins for white using
similar playout?rules.
- Dave Hillis
-Original Message-
From: Don Dailey dailey@gmail.com
To: computer-go computer-go@computer-go.org
Sent: Thu, 8 Jan 2009 1:38 pm
Subject: Re: [computer-go] Black/White
I ran some tests with 500k games each and came to this result:
with komi 0.5, white has 47.5 winn. perc.
with komi 1.5, white has 50.7 winn. perc.
with komi 2.5, white has 50.9 winn. perc.
with komi 3.5, white has 54.0 winn. perc.
with komi 4.5, white has 53.8 winn. perc. -- ?
with komi
You won't get any playouts whose outcome is even, so 3.5 and 4.5 are
effectively the same komi in this experiment (it would be different if
seki were possible, but naive playouts don't result in seki).
Your results seem very plausible to me.
Álvaro.
On Thu, Jan 8, 2009 at 1:59 PM, Isaac
Isaac Deutsch wrote:
I ran some tests with 500k games each and came to this result:
with komi 0.5, white has 47.5 winn. perc.
with komi 1.5, white has 50.7 winn. perc.
with komi 2.5, white has 50.9 winn. perc.
with komi 3.5, white has 54.0 winn. perc.
with komi 4.5, white has 53.8 winn. perc.
I don't know the answer, but it's not too surprising - with random play
the komi should be something like 2 or 3, so white with 7.5 komi has a
pretty good advantage. This advantage disappears (or almost
disappears) if the games are well played, but in your case they are
not.
I think
Nuno Milheiro wrote:
Given random play, komi value does not change play, so we could see
what is the mean score (no komi) instead of playing games at different
komis. But in this case we should not see those 2 exceptions.
Or else I'm wrong somewhere on my assumption.
You are wrong two ways.
You can't just look at the mean. If you take a histogram and look at the
distribution of scores, you'll see a Gaussian-like bump in the middle, but
also huge tails where only one color was left. You can calculate the histogram
once and then use it to derive the win rate for different Komis.
On Thu, 2009-01-08 at 20:29 +0100, Olivier Teytaud wrote:
I don't know the answer, but it's not too surprising - with
random play
the komi should be something like 2 or 3, so white with 7.5
komi has a
pretty good advantage. This advantage
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