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Subject: Re: u2600 Club Rating List - Jan 25

Author: Will Singleton

Date: 00:27:04 01/26/99

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On January 26, 1999 at 01:42:38, James B. Shearer wrote:

>On January 25, 1999 at 04:24:37, Will Singleton wrote (in part):
>
>
>>I am a bit confused by the fact that it appears to be more difficult for some
>>member programs to play against computers than humans.  That is, when a
>>program doesn't play other programs, it's rating will usually rise.  Is this
>>generally true, or not?  And why should it be so, since the rating system should
>>normalize this?
>
>      The rating system is based on a model which only approximates reality.  It
>would not be surprising if there are detectable deviations between the model and
>reality.  Note the model was developed for human tournament play, the ICC
>environment is rather different.
>      In any case I don't think rating model claims that your rating playing a
>subset of the pool of players will always be the same as your rating playing the
>entire pool.  So it is conceivable that program x performs at a 2200 level
>against computers on ICC but performs at a 2400 level against humans on ICC.
>(Of course such programs should be balanced by other programs which are better
>against computers so there is no net flow of rating points between the human and
>computer pools).
>      Naturally one can speculate endlessly when lacking data.  How does Amateur
>do playing humans vrs playing computers?  For example what is its performance
>rating for its last 100 games against humans as opposed to its last 100 games
>against computers?  (One could divide the pool in other ways, strong opponents
>vrs weak opponents for example.)
>                              James B. Shearer


Actually, it plays equally badly vs humans and computers in the endgame. :)
I'll have to start keeping stats about who I play.

If you and Volovka keep playing me, I'm sure my rate vs humans won't look too
good.

Will





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