Re: [Bug-gnubg] 1-ply vs 0-ply equity improvement

[Ian Shaw]

I don't have a head-to-head comparison handy. If I find it, I'll let you know.

However, these are the results of testing the current gnubg (0.15) weights 
against our benchmark database, which I ran some time ago.

Contact benchmark. One point  of total error corresponds to 0.0001565 points 
per game, according to Øystein's regression analysis.

      # Correct# Wrong  %       Tot. err.       Avg. Err        Err rate(per 
move) Error Rate (points per game)
0-ply   74524   32961   30.67%  1122.71         0.03406177      0.010445271     
    0.175704115
1-ply   76040   31445   29.26%   993.33         0.031589411     0.009241559     
    0.155456145
2-ply   79480   28005   26.05%   790.55         0.028228748     0.007354943     
    0.123721075

Subtracting,  I would expect 1-ply vs 0-ply to win 0.02 points per game.

-- Ian

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Mark Higgins
Sent: 30 January 2012 01:28
To: address@hidden
Subject: [Bug-gnubg] 1-ply vs 0-ply equity improvement

Does anyone know roughly how much of a cubeless money equity improvement 1-ply 
enjoys over 0-ply? (And 2-ply vs 1-ply.) I googled around for a while but 
couldn't find anything.


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