Re: [Bug-gnubg] Gammon theory

[Joern Thyssen]

On Mon, Aug 12, 2002 at 11:36:50AM +0100, Ian Shaw wrote
> 
> I'm not sure what the Gammon Value means. 

It's a synonym for gammon price. 

> Consider playing for the gammon
> leading 3-away 5-away while holding a 2-cube.
[...]

The gammon values/gammon prices reported are the internal representation
of gammon prices. With the definition gnubg uses you can calculate
normalised equity as

E = 2 * w - 1 
   + wg * gammon price (wg) - lg * gammon price (lg)
   + wbg * gammon price (wbg) - lbg * gammon price (lbg)

with the "usual" definition the formula would be

E = 2 * w - 1 
   + 0.5 * wg * gammon price (wg) - 0.5 * lg * gammon price (lg)
   + wbg * ( 0.5 * ( gammon price (wbg) - gammon price (wg) )
   - wbg * ( 0.5 * ( gammon price (lbg) - gammon price (lg) )

which is slightly more complicated. So the internal gammon price is
defined as it is purely for convinience.

I think you're the first person to complain about this. I've no problem
changing the reported gammon prices in the theory widget unless someone
can present good arguments against doing it :-)

Jørn

-- 
Joern Thyssen, PhD
Vendsysselgade 3, 3., DK-9000 Aalborg, Denmark
+45 9813 2791 (private) / +45 2077 2689 (mobile) / +45 9633 7036 (work)