ELO ?? 16. November 2011 23:25 |
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Re: ELO ?? 17. November 2011 07:57 |
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Zitat
'Moserware TrueSkill-Erklärung'
In chess, a bright beginner is expected to have a rating around 1000. Keep in mind that ratings have no units; it’s just a number that is only meaningful when compared to someone else’s number. By tradition, a difference of 200 indicates the better ranked player is expected to win 75% of the time. Again, nothing is special about the number 200, it was just chosen to be the difference needed to get a 75% win ratio and effectively defines a “class” of player.
I’ve slowly been practicing and have a rating around 1200. This means that if I play a bright beginner with a rating of 1000, I’m expected to win three out of four games.
[img]http://4.bp.blogspot.com/_Zfbv3mHcYrc/S2TvsakEvuI/AAAAAAAAKZg/1caIpEXPH0Q/s1600/bell_curves_difference.png[/img]
Note that it’s centered at 1200 - 1000 = 200. Although interesting to look on its own, it gives some useful information. This curve is representing all possible game outcomes between me and the beginner. The middle shows that I’m expected to be 200 points better. The far left side shows that there is a tiny chance that the beginner has a game where he plays as if he’s 700 points better than I am. The far right shows that there is a tiny chance that I’ll play as if I’m 1100 points better. The curve actually goes on forever in both ways, but the expected probability for those outcomes is so small that it’s effectively zero.
Re: ELO ?? 17. November 2011 15:36 |
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