Exit Function for Forecasting 

Use

The forecast exit supports a range of methods that can be categorized as follows:

·        Moving average (simple total average, moving average of specific order, weighted moving average)

·        Exponential smoothing (simple, linear, seasonal, trend-seasonal exponential smoothing)

·        Linear regression

You select a method in which to determine a forecast strategy.

There are more forecast strategies (see Obligatory Forecast Parameters under forecast strategy 11FCSTR).

Features

The forecast exit forecast strategies also offer the following functionality:

·        Automatic model selection

·        Outlier correction

·        Trend dampening

Parameter 17TDAMP (trend dampening factor) controls trend dampening (see Optional Forecast Parameters).

·        For exponential smoothing:

¡        Optimization of smoothing factors for exponential smoothing

You can select a particular error measure using the optimization variable parameter (22OPTVAR). See Optional Forecast Parameters.

¡        Model initialization

Activities

...

       1.      Create a planning function of type Exit and enter the names of the following function modules:

Function modules for exit function

Field	Technical name
Function module	UPF_FORECAST_EXIT_EXECUTE
Function module for init.	UPF_FORECAST_EXIT_INIT

       2.      Determine the parameters. You can find more information on parameters under Forecast Parameters, Obligatory Forecast Parameters and Optional Forecast Parameters.

You can find more information on creating an exit function under Exit Function.

 

See also:

 

Forecast Parameters

Exit Function for the Log Display