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Subject: Re: are you serious ?

Author: Dave Gomboc

Date: 01:08:52 12/18/99

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On December 17, 1999 at 15:25:24, Dann Corbit wrote:

>On December 17, 1999 at 02:54:31, Dave Gomboc wrote:
>[snip]
>>>>The normal distribution does not accurately predict the occurance of large
>>>>upsets.  Elo himself discussed this in his book, which you can reference for
>>>>further details.
>>>Of course, for a single contest, it does not accurately predict anything.  So
>>>what does he say about large upsets?  More frequent that predicted?  Less
>>>frequent?  I don't have the book (does anyone know where to buy it from?)
>>
>>Upsets are more frequent than predicted when using a normal distribution.
>>
>>What I don't understand is why people don't take real tournament results and
>>figure out the correct distribution.  Maybe they actually do... <shrug>
>
>That's interesting, because it supports the opposite of the assertion that lower
>rated players will never beat higher rated players if the difference is great.
>
>What is the stated reason for A.E.'s statements?  Is it mathematical or
>empirical?

Empricial.  I think that such a claim would have to be made based on
observation, no?

Dave



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