This is as it should be. Most (all?) players will observe that they have lower error rates in short matches without so many cube descisions and gammons not counting in many games. So since a players error rate depends on the matchlength so does the translation of error rates to fibs rating.
Christian. On 8/21/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Another funny thing wrt to FIBS ratings : it seems to me that when playing 1-pointers the FBS rating is much more severe (compared to the error rate based "overall rating") than when playing longer matches. Example : 1) 1-pointer Error rate (total) : -0.111 Error rate (per decision) : -5 Equiv. Snowie error rate : -2 Overall rating : World class Error based abs. FIBS rating : 1890.8 2) 15-point match Error rate (total) : -0.695 Error rate (per decision) : -5 Equiv. Snowie error rate : -2 Overall rating : World class Error based abs. FIBS rating : 2004.3 3) 1-pointer Error rate (total) : -0.256 Error rate (per decision) : -11 Equiv. Snowie error rate : -5 Overall rating : Advanced Error based abs. FIBS rating : 1668.3 [I've no example of a long match where I played -11/Advanced, but I'm sure that in a 5pt match, when you get Advanced you normally get a FIBS rating of 1900 or more]. Maybe there's just a bug in the computations, possibly due to absence of cube. Another possibility is that Kees' formula somehow incorporates a correlation between chequer errors and cube errors, which would make the frmula not adapted to 1-pt matches. Any thoughts ? MaX.
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