What logic would you use to detect active users on a social media platform that suddenly stopped posting? My inclination would be to use
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Some form of standard deviation to detect when a gap of non-use becomes significant.
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(I will be coding this up in Python.)
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As your posts show, there will be significant temporal fluctuations (hourly, daily, weekly, even monthly) that need to be accounted for 1/2
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Check out time series predictions esp those with est errors. Try Prophet to start, has Python bindings research.fb.com/prophet-foreca
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