Initialize flat growth.
Provides a strong initialization for flat growth by setting the growth to 0 and calculates the offset parameter that pass the function through the mean of the the y_scaled values.
flat_growth_init(df)
df |
Data frame with columns ds (date), y_scaled (scaled time series), and t (scaled time). |
A vector (k, m) with the rate (k) and offset (m) of the flat growth function.
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