Approximate ELO

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Return to Thread:User talk:Chase-san/Approximate ELO/reply (9).

Here are some graphs.

Approx elo 1 graph.png Approx elo 2 graph.png

Chase-san‎08:45, 30 October 2012
 

If you want to enforce a specific rating for a specific competitor, you can also adjust the DESIRED_AVERAGE in the algorithm above so ratings match what you want.

MN‎16:03, 30 October 2012
 

The real challenge is making multiple bots line up, which is about what I managed here.

Chase-san‎08:33, 31 October 2012

If you change the rating difference between competitors, you distort expected score estimation, PBI and specialization indexes. It is no longer ELO-like.

That´s why the code I put above shifts all competitors up or down equally.

MN‎17:41, 31 October 2012
 

Looks pretty good. Any chance you could show that first graph overlayed with a scatter plot of the training samples you used?

Skilgannon‎08:35, 31 October 2012
 

The first one was generated (calcelofast). I used all samples from 2009 rumble archive aps and glinko-2.

From there it was hand tuned to be honest.

Chase-san‎10:01, 31 October 2012
 

Wow, ok. It would only be a couple lines of Matlab/Scilab to do a proper regression though. Wouldn't that be better?

Skilgannon‎10:04, 31 October 2012
 

If you want to do one. You can just get the output from the algorithm and use those as the samples.

(I don't have MatLab actually).

Chase-san‎10:06, 31 October 2012
 
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