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Subject: Re: You compare apples with bananas

Author: Jeroen van Dorp

Date: 06:15:54 07/25/00

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Both apples and bananas are fruit, so they have something in common. For
instance: "would you like a piece of fruit after your meal?" If asked, you're
supposed to get a grape, apple, banana, orange... not a brick or a glass of
milk.

The same with ratings, especially if you use the terminology "Elo" in it. In
this case (I suppose) it's the same algorithm used to calculate the rating.

You are right, these are separate figures. However, Elo ratings themselves
across the world may have just a bit in common.

Maybe a 2000 player in Chili (or the Netherlands...or the US) , never playing
outside his country, might be just a 1800 or even a 2200 player when going
international. Well, the "pool" stuff, we all know.

However the differences that can occur, a certain rating tells you something
about "absolute" strenght. Maybe a 1600 player may score between 1450 and 1750,
maybe a 2650 computer program may reach 2450 or 2750 in actual play, but it
tells you something about the level of play all the same.

You are very right in your disclaiming SSDF figures against FIDE Elo figures,
but to deny any correlation is also too much. There is one. We can debate about
the deviations, no doubt about that. Well, that's a different story.

No need to burn it in the mirror. Just use a sticker:
"warning: SSDF-Elo ratings are not necessarily the same ratings as standard
human FIDE Elo ratings. We do not guarantee...." :)

Jeroen ;-}



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