Hierarchy
SAP_BW (Software Component) SAP Business Warehouse⤷
BW-PLA-BPS (Application Component) Business Planning and Simulation⤷
UPF (Package) SEM-BPS: Planning Functions
Basic Data
| Data Element | UPF_Y_SIGMA_FACTOR |
| Short Description | Sigma Factor for Outlier Correction |
Data Type
| Category of Dictionary Type | Direct Type Entry | |
| Type of Object Referenced | No Information | |
| Domain / Name of Reference Type | ||
| Data Type | DEC | Counter or amount field with comma and sign |
| Length | 4 | |
| Decimal Places | 3 | |
| Output Length | 5 | |
| Value Table |
Further Characteristics
| Search Help: Name | ||
| Search Help: Parameters | ||
| Parameter ID | ||
| Default Component name | ||
| Change document | ||
| No Input History | ||
| Basic direction is set to LTR | ||
| No BIDI Filtering |
Field Label
| Length | Field Label | |
| Short | 10 | Sigma Fact |
| Medium | 20 | Sigma Factor |
| Long | 30 | Sigma Factor |
| Heading | 30 | Sigma Factor |
Documentation
Definition
The sigma factor is a setting for outlier correction. It defines the outlier in historic values. The greater the sigma factor, the more tolerance the system shows anomalous values. The system will identify less outliers.
Outliers are defined in the following way: Forecasting methods calculate forecast values for a period of time in the past. These values are then compared with the historic values. The standard deviation of the differences is multiplied with the sigma factor, producing the limiting value delta for the deviation. If a historic value deviates from the forecast value by more than delta, it is treated as an outlier.
Use
The system proposes the value 2 for the sigma factor. Increase this value if outlier correction is replacing historic values that you think should be taken into account in the forecast.
Dependencies
Example
History
| Last changed by/on | SAP | 20130604 |
| SAP Release Created in | 350 |
