computer-go: Re: Generalized Ranking System

["Cuijpers, P.J.L." <P.J.L.Cuijpers@xxxxxx>]

I have some criticism on Mark Boons post:

He wrote

> I used a simple notion that player A 
> is one rank higher than player B if he wins two out of three games. I 
> also assume that if player A is one rank higher than player B and player B
is 
> one rank higher than player C, player A is two ranks higher than player C.

> (This is not a trivial assumption, but the discussion gets too complicated

> otherwise.)

This assumption turns out to be wrong.
Maybe due to the handicap system or maybe due to human factors we can easily
verify at:

http://www.european-go.org/rating/statev.html

that a 20k player has a chance of 36% of winning against a 19k, 35% against
a 18k and 24% against a 17k while a 3D player has a chance of 36% against a
4D, 20% against a 5D, 8% against a 6D and no chance against a 7D player.
The mapping of the kuy-dan to generalized ranking is therefore strongly
non-linear. Pity.

As for the discussion about God:
 
If we don't believe in freedom of expression for people we despise,
we don't believe in it at all			-- Noam Chomsky