Trying to improve lazy smp

Discussion of chess software programming and technical issues.

Moderators: bob, hgm, Harvey Williamson

Forum rules
This textbox is used to restore diagrams posted with the [d] tag before the upgrade.
bob
Posts: 20642
Joined: Mon Feb 27, 2006 6:30 pm
Location: Birmingham, AL

Re: Trying to improve lazy smp

Post by bob » Sat Apr 18, 2015 12:37 am

Sven Schüle wrote:
bob wrote:
cdani wrote:
bob wrote:What draw rate do you assume for your 69 = 140?
I just taked this 140 from FIDE (in fact 141):

https://www.fide.com/fide/handbook.html ... ew=article
That has an assumed draw rate however, which might not be correct for your test games...
No, the draw rate is simply not part of the underlying theoretical model of the Elo rating system as it is used by the FIDE. Bayeselo uses a different model that takes the probabilities for win, draw, and loss into account as well as other factors like colors. The table in the FIDE handbook lists percentage expectancy values mapped to rating differences (and vice versa) based on the normal distribution, no draw rate is involved there.
I assume it has to be fit to something initially? IE human vs human games?

Or maybe I am simply wrong. But most predictive models like that come from fitting an approximation to empirical data somewhere along the way.

Post Reply