Glossary > —P— > Periods Between Demand
Periods Between Demand
The number of periods between demands that is used to calculate intermittency. This value is calculated as slices of zero / (slices of non-zero – 1)
For example:
Consider a demand history of [5, 4, 0, 0, 3, 2, 0, 1, 0, 0, 0]
slices of zero = 6
slices 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.
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