Re: [Bug-gnubg] Snowie error rate bug?

[Joern Thyssen]

On Sat, May 03, 2003 at 03:50:39PM +0200, Scott Steiner wrote
> Here are the overall stats of an imported and analysed fibs match:
> 
>                                       Opponent                You
> Overall error rate (total)        -3,658 (-31,893%)    -2,907 (-19,647%)
> Overall error rate (per decision) -0,018 (-0,157%)     -0,016 (-0,105%)
> Equivalent Snowie error rate      -11,7                -12,3
> 
> MWC against current opponent     37,75%               62,25%
> 
> As you can see, my overall error rate is better than that of my
> opponent.  However, the equivalent snowie error rate rates me worse.

Yes.

gnubg error rate:

           overall error rate
-----------------------------------------------
unforced moves + close or actual cube decisions

snowie error rate

           overall error rate
-----------------------------------------------
total moves + total cube decisions


Opponent:

gnubg error rate : -3,658/(139+64) = -0.018
snowie error rate: -3,658/(152+160)= -0.0117


You

gnubg error rate : -2,907/(134+53) = -0.016
snowie error rate: -2.907/(148+88) = -0,0123


Your opponent had the cube ownership a lot with 160 cube decisions.
However, gnubg estimates than 100 of these were trivial (e.g.,
scrambling home to save a gammon or trailing a gazillion pips in the
race), so even though your opponent gave up more equity than you his
snowie error rate is still lower due to 100 trivial cube decisions.

Jørn