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[Bug-gnubg] Bug: pruning problem (solved or not?)
From: |
boomslang |
Subject: |
[Bug-gnubg] Bug: pruning problem (solved or not?) |
Date: |
Wed, 10 Feb 2010 11:38:18 +0000 (GMT) |
Hi team,
I am not sure if this has been tackled yet but I get strange results in the
following position:
Position ID: LQAAQAoAAAAAAA
Match ID: cIlmAAAACAAA
On 0-ply, it gives the correct move (5/off 2/1) but on 1-ply it rates '5/off
4/3' equally good as '5/off 2/1'... During a full rollout it rates all three
possible moves equally good. See tables below.
Does this have something to do with pruning? Am I running an old version
perhaps? I have "Version GNU Backgammon 0.90-mingw 20091102" and use a large
cahce and one eval thread, Windows XP HE 2002 SP3.
Thx in advance
--boomslang
1. Cubeful 0-ply 5/off 2/1 Eq.: +0.929
0.732 0.000 0.000 - 0.268 0.000 0.000
0-ply cubeful prune [expert]
2. Cubeful 0-ply 5/off 4/3 Eq.: +0.734 ( -0.196)
0.642 0.000 0.000 - 0.358 0.000 0.000
0-ply cubeful prune [expert]
3. Cubeful 0-ply 5/off Eq.: +0.479 ( -0.450)
0.597 0.000 0.000 - 0.403 0.000 0.000
0-ply cubeful prune [expert]
1. Cubeful 1-ply 5/off 2/1 Eq.: +0.778
0.732 0.000 0.000 - 0.268 0.000 0.000
1-ply cubeful prune
2. Cubeful 1-ply 5/off 4/3 Eq.: +0.778 ( +0.000)
0.642 0.000 0.000 - 0.358 0.000 0.000
1-ply cubeful prune
3. Cubeful 1-ply 5/off Eq.: +0.712 ( -0.066)
0.599 0.000 0.000 - 0.401 0.000 0.000
1-ply cubeful prune
1. Cubeful 2-ply 5/off 2/1 Eq.: +0.778
0.732 0.000 0.000 - 0.268 0.000 0.000
2-ply cubeful prune [world class]
2. Cubeful 2-ply 5/off 4/3 Eq.: +0.778 ( +0.000)
0.642 0.000 0.000 - 0.358 0.000 0.000
2-ply cubeful prune [world class]
3. Cubeful 2-ply 5/off Eq.: +0.778 ( +0.000)
0.599 0.000 0.000 - 0.401 0.000 0.000
2-ply cubeful prune [world class]
1. Rollout 5/off Eq.: +0.785
0.599 0.000 0.000 - 0.401 0.000 0.000 CL +0.198 CF +0.785
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.003]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 845114611 and
quasi-random dice
Play: 0-ply cubeful prune [expert]
Cube: 0-ply cubeful prune [expert]
2. Rollout 5/off 2/1 Eq.: +0.778 ( -0.008)
0.732 0.000 0.000 - 0.268 0.000 0.000 CL +0.463 CF +0.778
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.000]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 845114611 and
quasi-random dice
Play: 0-ply cubeful prune [expert]
Cube: 0-ply cubeful prune [expert]
3. Rollout 5/off 4/3 Eq.: +0.778 ( -0.008)
0.642 0.000 0.000 - 0.358 0.000 0.000 CL +0.284 CF +0.778
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.000]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 845114611 and
quasi-random dice
Play: 0-ply cubeful prune [expert]
Cube: 0-ply cubeful prune [expert]
1. Rollout 5/off 2/1 Eq.: +0.778
0.732 0.000 0.000 - 0.268 0.000 0.000 CL +0.463 CF +0.778
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.000]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 845114611 and
quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
2. Rollout 5/off 4/3 Eq.: +0.778 ( +0.000)
0.642 0.000 0.000 - 0.358 0.000 0.000 CL +0.284 CF +0.778
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.000]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 845114611 and
quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
3. Rollout 5/off Eq.: +0.778 ( +0.000)
0.597 0.000 0.000 - 0.403 0.000 0.000 CL +0.194 CF +0.778
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.001 CF 0.000]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed 845114611 and
quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
- [Bug-gnubg] Bug: pruning problem (solved or not?),
boomslang <=