From: "Daniel M. Toebbens" HMI DE>
Date: 17 feb 2003
Subject: Re: Shogi E-mail ladder
On Sun, 16 Feb 2003, Hans van Velzen wrote:
> Observing the shogi E-mail ladder for a while I have come to the
> conclusion that there is very little movement on the ladder. This is,
> of course, due to the limited number of games, that are slow in
> progress, as compared to live shogi. I think that the ladder should
> be a little more volatile. Winning a game should usually mean to go
> up several places, instead of one or even no place.
> What are your opinions in this? Does anyone of you have any idea on how
> to accomplish this?
Assuming that the ladder rank points are calculated using an elo type
formula: just increase the coefficient k accordingly. At the moment it
seems to be something like 40 (based on my last game, after which my
rating changed from 875 to 914).
If you consider only the ratings above 400 there are currently 65 players
on the ladder covering a range of about 2000 points. That means the
average distance between places is 30 points. With that in mind I would
propose a coefficient k of 200. Winning against somebody near to you in
the ladder would give you about 100 points, resulting in a change of about
3 places in the ladder standing.
Yours,
Daniel Toebbens