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Subject: Re: How do I compute an unrated program's rating after a series matches?

Author: Odd Gunnar Malin

Date: 03:29:38 03/21/05

Go up one level in this thread


On March 18, 2005 at 12:53:52, Tony Hedlund wrote:

>On March 18, 2005 at 07:01:57, Odd Gunnar Malin wrote:
>
>>On March 18, 2005 at 05:04:18, Tony Hedlund wrote:
>>
>>>On March 18, 2005 at 00:35:00, emerson tan wrote:
>>>
>>>>On March 18, 2005 at 00:27:04, emerson tan wrote:
>>>>
>>>>>I want to know the rating of Frizt 5.32 on Athlon 1200Mhz, so I run a series of
>>>>>matches with programs that have established ratings.
>>>>>
>>>>>Supposed Fritz 5.32 scored from the following matches:
>>>>>
>>>>>Junior 8.0       elo 2782   14.5 - 5.5     Fritz 5.32
>>>>>Shredder 7.0     elo 2772   12.0 - 8.0     Fritz 5.32
>>>>>Deep Frizt 8.0   elo 2790   16.0 - 4.0     Fritz 5.32
>>>>>Chess Tiger 14.0 elo 2719   11.5 - 8.5     Frizt 5.32
>>>>>Hiarcs 9.0       elo 2747   13.5 - 6.5     Frizt 5.32
>>>>>
>>>>>How do I compute the elo of Fritz 5.32 ?
>>>>>
>>>>>Thanks
>>>>
>>>>
>>>>I can only see some plus or minus from its matches but no elo rating.
>>>
>>>average elo+  400*(won-lost)/games
>>>
>>>2762+ 400*(32.5-67.5)/100
>>>
>>>2762-140 = 2622
>>>
>>>Tony
>>
>>Hi.
>>
>>Your formula are correct for unrated players but do you have the correct formula
>>to calculate performans for rated players.
>
>You can use the formula for calculating the TPR for a rated player in a
>tournament.
>
>Tony
>

Yes, I'm sure there are many methods to calculate TPR but in a program for
publishing a table to the net I don't think it's good to take up the discussion
there. What I want is to do it like all other do so people can compare, and ev.
use it for the same tournament they allready find on the net to play with the
result a little.

In here we can discuss what is the best method, shouldn't it reflect if a player
do it better or worse than expected? As it is now you can get a performance
lower than your rating but still raise your rating points in a tournament. The
same aply if you lose ratingpoints.

For players with perfect (100%) score I like the USCF method with giving a
performance of 400 point higher than highest rated opponent, or with 0% 400
points lower than the lowest rated opponent.

But what to do with the rest to get rid of the strange looking performance. Use
the 350 rule in performance calculating, whould that take care of it?

Odd Gunnar



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