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Exponentaion weighed functions #13

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ritchie46 opened this issue Dec 1, 2021 · 1 comment

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ritchie46 commented Dec 1, 2021

Someone asked if we could support this: https://pandas.pydata.org/pandas-docs/stable/user_guide/window.html#window-exponentially-weighted

I haven't looked at it much, but it seems like this should be possible with some cumulative expression kung fu.

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koaning commented Dec 1, 2021

Exponential smoothing only looks at the previous value. I think it's just using a .diff() might do.

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