Periods Between Demand
The number of periods between demands that is used to calculate intermittency, considered from the first non-zero demand. This value cannot be altered and is calculated as
Periods of Zero / (Periods of Non-Zero – 1).
Example 1
Consider a demand history of [0, 26, 0, 0, 0, 0, 0, 48, 16, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 19, 0, 0, 0]
Periods of Zero = 21
Periods of Non-Zero = 5
The value of the Periods Between Demand would be 21 / (5 – 1) = 5.25
Example 2
Consider a demand history of [5, 4, 0, 0, 3, 2, 0, 1, 0, 0, 0]
Periods of Zero = 6
Periods of Non-Zero = 5
The value of the Periods Between Demand would be 6 / (5 – 1) = 1.5
 |
The value of the PERIODS_BETWEEN_DEMAND global setting is used for the Periods Between Demand when:
• A new parameter is created
• The value of the Periods Between Demand field is blank
The default value is displayed in parenthesis next to the label on the Best Fit tab of the Forecast Parameters page.
|
Appears on these pages