Re: [Bug-gnubg] Can we display Effective Pip Count

[Joern Thyssen]

On Tue, May 13, 2003 at 10:01:39AM +0100, Ian Shaw wrote
> > -----Original Message-----
> > From: Joern Thyssen [mailto:address@hidden
> > Sent: 12 May 2003 19:44
> > 
> > I've added effective pip count to
> > 
> > Analyse->One chequer race
> > Analyse->One sided rollout
> > Analyse->Evaluation (if one- or two-sided bearoff)
> 
> The One Sided Rollout is correct.
> 
> The wastage is calculated wrongly on the Evaluation. It has (I think):
>  PlayersWastage = PlayersEPC - OpponentsPips
>  OpponentsWastage = OpponentsEPC - PlayersPips

OK, I'll fix that.

> 
> The Mean Rolls for the classic 7-5-3 (79 pips) distribution differs on the 
> Evaluation and One Chequer Race displays.
> Evaluation shows Mean = 10.539 and epc = 68.068. This number is correct.

I guess you mean epc = 86.068 :-)

> One Chequer Race Mean = 10.006. The epc is calculated from this
> correctly and the wastage follows from this. There is also a small
> rounding error. Are you using 8.167 rather than 49/6? Call me a
> pedant, but would a few more 6s hurt?

I am using 49/6, it's just rounded in the output. 

Note that one chequer race will be different from evaluation, since it
assumes you have one chequer only (i.e., one chequer at the 79point). 

Jørn