Marketing Analytics, Customer Lifetime Value, K Means Clustering, Probabilistic Models, Data Science.
model. from lifetimes.utils import calibration_and_holdout_data #train/test split (calibration/holdout) #days to reserve for holdout period t_holdout = 181 # end date of observations max_date = df["InvoiceDate"].max() print("End of observations:", max_date) # end date of chosen calibration period