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Subject: Re: Computer accounts DO cause ratings inflation

Author: KarinsDad

Date: 14:43:21 03/17/99

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On March 17, 1999 at 13:35:46, Robert Hyatt wrote:

[snip]
>
>this is another interesting aspect.  The "K-factor" in the rating calculation
>was arrived at most likely by 'trial and error'.  IE it was tuned for tournament
>chess where you might play 5-10 games per month, and K has to be large enough to
>let your rating swing as much as it should.  But what if you play 100 games per
>day.  I'd almost think K should shrink _way_ down... ie as in the "glicko"
>rating system that is _much_ more stable.  IE what is the probability that
>Crafty is actually 200 points worse than yesterday, when _no_ changes have been
>made?  Very low.  Yet if I play an equal-rated player, my rating changes by
>+/- 16 after one game.  For a server, I believe this is _wrong_.

Robert,

Are you saying that the servers do not decrease the ratings changes (i.e. halve
them just due to the fact that a higher rated player is playing) for the higher
rated players?

If so, this is strange and disturbing.

KarinsDad :|



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