Re: My true ROI is ... (very low content)
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Now if you're talking about someone who started playing three months ago and they play 5 SnGs a week, yes, there is major non-stationarity in what he is trying to measure and him trying to measure his "true ROI" is silly. There's no way he can do it before it will move on him significantly.
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Good point. Even though "true" ROI can move quickly, observed ROI sets a lower bound for "true" ROI for an improving player, just as it sets a upper bound for "true" ROI for a player to moves to higher SNGs. Both applications can be useful.
The Shadow
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