Author: Don Dailey
Date: 06:37:24 08/02/98
Go up one level in this thread
On August 02, 1998 at 08:01:28, Robert Hyatt wrote: >On July 31, 1998 at 20:51:56, Bruce Moreland wrote: > >> >>On July 31, 1998 at 14:00:04, Peter Fendrich wrote: >> >>>The ratings on ICC and FICS are really swinging. IMHO they are using a >>>completely wrong approach to handle this. The ELO formula is not at all suited >>>for the kind of events taking place on these real time severs. The original ELO >>>formula is using a kind of constant a 'dampening' factor for varitaions during >>>time. At least on ICC they have tried to use another, more dynamic but similar >>>method to handle this problem. There are new, much better, ways to deal with >>>this. Nowerdays used within some of the space, aero and automotive applications. >> >>Both ICC and FICS tried to use the Glicko system. >> >>On ICC, they made it an "extra" rating system, but I don't think anyone paid >>much attention to this, so it is removed from the "finger" notes. It is still >>there, but to see it you have to use "yfinger". >> >>On FICS, they made this the only rating system. I am not there much, but I >>remember seeing a lot of posts about this, people were upset about this system >>because if you played a lot, your rating tended to stay constant no matter how >>you did, and people wanted to have more movement in their ratings. So I believe >>that on FICS they patched Glicko somehow, so that ratings would still move a >>bit. >> >>bruce > > >the problem with "Elo" is that the "K" factor was statistically derived from >the typical number of rated games a person would reasonably play in a year, and >the max expected rating change of a person over that time frame. It is totally >wrong for a server where (say) a program plays 20,000 games per year. Because >we see the huge swings that result from this. Chances are that if you are a >2,000 player today, you will be a 2,000 player in 6 months, regardless of how >many games you play, So it would be difficult to pick a formula that is fair >to those playing a dozen games a year and to those playing thousands. I wonder why they don't give people the option to use a smaller K factor? - Don
This page took 0.01 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.