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[gnugo-devel] Inaccurate estimate_score
From: |
Darren Cook |
Subject: |
[gnugo-devel] Inaccurate estimate_score |
Date: |
Fri, 25 Mar 2005 11:33:12 +0900 |
User-agent: |
Mozilla Thunderbird 1.0 (X11/20041206) |
The GTP commands shown in [1], give the output shown in [2]. It is black
to play. "final_score" is correct and the true score of this position is
60.5 to white if black moves next; 61.5 if white moves next.
I'm confused by the output of estimate_score; when the docs (manual
section 19.6) said upper/lower bound I was hoping for a reasonably
reliable possible range of scores (e.g. something like 59.5 to 61.5). Is
this a bug, or my misunderstanding of the docs?
It also seems the output of experimental_score is 2.5pts wrong for
black, 1 pt wrong for white. Again, is this a bug or my misunderstanding
of what it is doing?
Darren
P.S. Gnugo 3.6.
[1]:
showboard
final_score
estimate_score
experimental_score black
experimental_score white
[2]:
=
A B C D E F G H J
9 . X X . . . . . . 9
8 X . X O O O . . . 8
7 X X X O . O + . . 7
6 . . X O . . O . . 6
5 O O O . + . . O O 5
4 . . X O O . . . . 4
3 X X X O . O O O . 3
2 . . . O . O . . O 2 WHITE (O) has captured 12 stones
1 O O O O . . . . . 1 BLACK (X) has captured 1 stones
A B C D E F G H J
= W+60.5
= W+59.5 (upper bound: 59.5, lower: 59.5)
= 58.0
= 60.5
- [gnugo-devel] Inaccurate estimate_score,
Darren Cook <=