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[Bug-gnubg] Re: Strange FIBS ratings
From: |
kvandoel |
Subject: |
[Bug-gnubg] Re: Strange FIBS ratings |
Date: |
Fri, 5 Sep 2003 20:05:45 +0200 (CEST) |
On Fri, 5 Sep 2003, Albert Silver wrote:
> I analyzed two matches in the past few days where coincidentally I made
> some huge blunders and where my error rate came out as 22+, thereby
> classifying me as a Casual Player. The problem is that the FIBS ratings
> given are VERY different, and seem a bit generous on top of it. I can't
> copy the statistics to the clipboard anymore (hint! hint!) so I'll copy
> it from the exported TXT:
> Match 1:
> Overall statistics
> Error rate (per decision) -51.28 ( -0.542%) -20.25 ( -0.253%)
> Error based abs. FIBS rating 1465.2 1704.0
> Chequerplay errors rating loss 353.5 344.7
> Cube errors rating loss 231.4 1.3
> And now match 2:
> Error rate (per decision) -13.86 ( -0.036%) -21.97 ( -0.075%)
> Error based abs. FIBS rating 1936.0 1866.3
> Chequerplay errors rating loss 95.9 131.8
> Cube errors rating loss 18.1 51.9
> How can I be rated 1866 with the enormous error rate in match 2?? And
> why is it so much better than the first match with a huge error rate as
> well?
The reason is that in the 2nd match your errors consisted mainly of cube
errors, which have a much smaller effect on rating, which depends on
move errors and cube errors (not on the total errors). The "Error rate
(per decision)" is a number which is not well correlated with rating if
you make large cube errors.
The textual description should be coupled to rating and not to "Error
rate (per decision)", I'm not sure if that has been done yet.
See
http://www.cs.ubc.ca/~kvdoel/tmp/ratings/
for the gory details.
Kees
- [Bug-gnubg] Strange FIBS ratings, Albert Silver, 2003/09/05
- [Bug-gnubg] Re: Strange FIBS ratings,
kvandoel <=
- [Bug-gnubg] RE: Strange FIBS ratings, Albert Silver, 2003/09/05
- [Bug-gnubg] Re: Strange FIBS ratings, Joern Thyssen, 2003/09/05
- [Bug-gnubg] RE: Strange FIBS ratings, Albert Silver, 2003/09/05
- Re: [Bug-gnubg] Re: Strange FIBS ratings, Joseph Heled, 2003/09/05
- Re: [Bug-gnubg] Re: Strange FIBS ratings, Holger, 2003/09/06
- RE: [Bug-gnubg] Re: Strange FIBS ratings, Albert Silver, 2003/09/06
- Re: [Bug-gnubg] Re: Strange FIBS ratings, Joseph Heled, 2003/09/05