Partial concurrent adjustment → Estimate regression coefficients

The Partial current adjustment → Estimate regression coefficients option means that the ARIMA model, outliers and other regression variables are not re-identified. The coefficients of the ARIMA model are fixed, but the regression coefficients are re-estimated.

In particular, new outliers cannot be added to the model and neither calendar variables nor the outliers type can be changed. The transformation type remains unchanged.

The example below shows the initial model (left) and the results of the refreshment procedure with the Partial concurrent adjustment → Estimate regression coefficients option (right). The number of estimated parameters is 16 in the initial model and 14 in the revised model. That is because the ARIMA coefficients are not estimated.

The Partial concurrent adjustment → Estimate regression coefficients revision policy results