Re: [Bug-gnubg] improvement of cubeful equities in match play bearoffs

[Joseph Heled]

I thought eq(cfully live cube) would not be "easy".

Anyway, have you staged a large nnumber of matches between the two 
strategies, to see that it really works?

-Joseph

Joern Thyssen wrote:
> On Fri, Apr 04, 2003 at 08:21:18AM +1200, Joseph Heled wrote
>
> > Sounds great. Can you tell more about the theoretical side, i.e. how do 
> > you get X from the equities?
>
>
> For owned cube and unavailable cube the Janowski formula is
>
> eq(cubeful) = (1-x) eq(cubeless) + x eq(fully live cube)
>
> For centered cube the above formula is a reasonable approximation, so I
> use it there as well.
>
> I've got eq(cubeful) from the two-sided bearoff database, and
> eq(cubeless) and eq(fully live) can also easily be calculated, so it's
> trivial to calculate X.
>
> I then feed X into the match play formula:
>
> mwc(cubeful) = (1-x) mwc(cubeless) + x mwc(fully live cube).
>
> Jørn