Author: Tim Foden
Date: 03:13:51 04/25/03
Go up one level in this thread
On April 25, 2003 at 04:20:33, Albert Bertilsson wrote: >Hi! > >When testing my new engine versions against older versions I use the nice >WhoIsBetter tool to determine weather or not the new version is likely to be >stronger. > >But I would also like to know how much stronger. Just an estimation would be >nice, just as an reward for the work. Putting the engine on FICS takes to long, >so I wonder are there any rules of thumb that I can apply? > >Like: >New engine scores 3 to 2? 60% = +70.44 ELO. >New engine scores 2 to 1? 66.66% = +120.36 ELO. >New engine scores 3 to 1? 75% = +190.85 ELO. > >Regards Albert Dann Corbit has a tool called USCF which can calculate such numbers. I have a modified version here. Here is a table of outputs which may be useful: A win percentage of 50% gives a rating difference of +0.00 ELO A win percentage of 55% gives a rating difference of +34.86 ELO A win percentage of 60% gives a rating difference of +70.44 ELO A win percentage of 65% gives a rating difference of +107.54 ELO A win percentage of 70% gives a rating difference of +147.19 ELO A win percentage of 75% gives a rating difference of +190.85 ELO A win percentage of 80% gives a rating difference of +240.82 ELO A win percentage of 85% gives a rating difference of +301.33 ELO A win percentage of 90% gives a rating difference of +381.70 ELO Cheers, Tim.
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