Need for speed: optimizing Facebook-Prophet fit method to run 20X faster

Simplifying the Bayesian model

This is the second part of a series about optimizing the internal mechanism of Prophet. Part one is not a prerequisite to understand this part, but it is recommended.

Since I released part one, the number of downloads of the Prophet package reached 30 million. It is one of the most common time series forecasting packages out there. Despite not being the most accurate algorithm, it works relatively well out of the box, but still allows …

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