[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

BGonline.org Forums

ELO

Posted By: Bob Koca
Date: Wednesday, 16 December 2009, at 7:43 p.m.

In Response To: ELO (Rich Munitz)

"The Elo formula does not care in the least what the absolute ratings are - only relative ratings, and these two players must produce win percentages in the long run to match the Elo formula by definition." -- No. What may happen is that the ELO formula overstates the underdogs chances for a small ratings difference but overstates it for a large difference. There is no reason to think it is exactly correct for a given ratings difference. --

"And of course, there is always the issue of ratings manipulation, or players willingness or unwillingness to play new players with low experience that may have ratings far from their proper levels. Or players that only play with closely rated players vs those that will play anyone. "

--

Yes to all of those. And also there is a wide range of matchlengths being played but the ELO rating is applying to all of them simultaneously. How to adjust for different match lengths is basically a guess and another source of uncertainty. If everyone at the site only played 5 point matches, I would have more confidence in the formula's predictions for 5 point matches.

Messages In This Thread

 

Post Response
Your Name:
Your E-Mail Address:
Subject:
Message:

If necessary, enter your password below:

Password:
 

 

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

BGonline.org Forums is maintained by Stick with WebBBS 5.12.