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Re: [Bug-gnubg] standard error in cubefull 2ply rollouts


From: Christian Anthon
Subject: Re: [Bug-gnubg] standard error in cubefull 2ply rollouts
Date: Sat, 9 Jun 2007 17:15:11 +0200

Certainly looks like a bug. Could you give all the particulars about
the rollout and which version you where using (threads?).

Christian.

On 6/9/07, Achim Mueller <address@hidden> wrote:
Hi all,

can someone please explain me the following numbers:


posID: a9skAAzHeTsAAA matchID: MBkgAlAACAAA

Cube analysis
Rollout cubeless equity  +0.566 (Money:  +0.566)

Cubeful equities:
1. No double            +1.010
2. Double, take         +1.079  ( +0.070)
3. Double, pass         +1.000  ( -0.010)
Proper cube action: Too good to double, pass (12.3%)
Rollout details:
Centered 1-cube:
  0.779 0.016 0.000 - 0.221 0.008 0.000 CL  +0.566 CF  +1.010
 [0.019 0.001 0.000 - 0.019 0.000 0.000 CL   0.014 CF   0.442]
Player ace owns 2-cube:
  0.783 0.015 0.000 - 0.217 0.007 0.000 CL  +1.198 CF  +1.079
 [0.001 0.001 0.000 - 0.001 0.000 0.000 CL   0.004 CF   0.005]
Full cubeful rollout with var.redn.
1296 games, Mersenne Twister dice gen. with seed -715772175 and
quasi-random dice
Play: world class 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]

Why is the standard error for Centered 1-cube (cubefull) at 0.442?

Ciao

Achim


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