Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: What is the start elo when is calculating of the SSDF rating list ?

Author: Peter Fendrich

Date: 12:44:24 11/04/02

Go up one level in this thread


On November 04, 2002 at 14:29:30, Sedat wrote:

>thanks in forwards

When computing these rating you can use a method that is not possible for
humans. In this case, each time you generate the ratings, you can use the
complete set of games played sofar. All that counts are the differences between
all the engines so you can start with whatever rating you want. Let's start with
for instance 2300 for all the engines to prevent ratings below zero. The
iterative formula will eventually give new ratings mirroring the rating
differences and according to your starting value. A player that got 2310 would
get 2210 if you had started with 2200 instead.
The next step SSDF does, is to adjust the level of all the ratings up or down,
some amount of ratingpoints. This is done using games vs rated humans so the
average level will be according to these results.

The last step is done just to get something fairly comparable to human rating
levels. But never forget that the SSDF ratings are not the same as the humans
even if the adjustment step gives some feeling of what the real strength level
is compared to humans.
Regards,
Peter



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.