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@dboing said in #25: > Why did you think piece-wise fitting would be prone to overfitting? if I understood. I made some arguments but they might not be getting the points. It's basically just a matter…

@NoseKnowsAll said in #18: > I agree that there should NOT be a linear fit between the different rating systems. First of all, many of the systems are not Elo or Elo-like. Chesscom uses the Glicko sys…

@dboing @dboing said in #9: > And other question. maybe related to the post about confidence notions. Can one bathe this data exercise into a prediction one, from sub-sampling the data used to fit the…

@NoseKnowsAll but even after filtering and pruning you can use the remaining sample sizes per conversion to provide confidence intervals right? even if they are slightly biased because of the pruning …

can you provide confidence intervals for the different conversions in the table? some of them are surely way less reliable than others and this would make these easy to identify