Marketing Analytics, Customer Lifetime Value, K Means Clustering, Probabilistic Models, Data Science.
max_cal_date = max_date - timedelta(days=t_holdout) print("End of calibration period:", max_cal_date) df_ch = calibration_and_holdout_data( transactions = df, customer_id_col = "CustomerID", datetime_col = "InvoiceDate", monetary_value_col = "TotalSum", calibration_period_end = max_cal_date,