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BGonline.org Forums
Win Rate as a function of PR difference - XG Feature
Posted By: AdamStocks In Response To: Win Rate as a function of PR difference - XG Feature (Maik Stiebler)
Date: Thursday, 20 August 2015, at 9:08 p.m.
The various Elo formulas attempt to neutralise the effect of matchlength, but they aren't perfect in that regard. Also, the initial 'ramp' (first 500 experience) adds rating points into the system ('rating inflation') in a way that boosts the rating gains of better players (and vice verse for weaker players), thereby extending the overall rating range, which in turn increases the rating gain/loss per PR, hence 39.2 instead of the 'traditional' 33.
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