Intermittent demand forecasting for inventory control: A multi-series approach
This paper is concerned with identifying an effective method for forecasting the lead time demand of slow-moving inventories. Particular emphasis is placed on prediction distributions instead of point predictions alone. It is also placed on methods which work with small samples as well as large samples in recognition of the fact that the typical range of items has a mix of vintages due to different commissioning and decommissioning dates over time. Various forecasting methods are compared using monthly demand data for more than one thousand car parts. It is found that a multi-series version of exponential smoothing coupled with a Pólya (negative binomial) distribution works better than the other twenty-four methods considered, including the Croston method.
|Date of creation:||Jul 2012|
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- Harvey, Andrew C & Fernandes, C, 1989. "Time Series Models for Count or Qualitative Observations," Journal of Business & Economic Statistics, American Statistical Association, vol. 7(4), pages 407-17, October.
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- Billah, Baki & King, Maxwell L. & Snyder, Ralph D. & Koehler, Anne B., 2006.
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International Journal of Forecasting,
Elsevier, vol. 22(2), pages 239-247.
- Baki Billah & Maxwell L King & Ralph D Snyder & Anne B Koehler, 2005. "Exponential Smoothing Model Selection for Forecasting," Monash Econometrics and Business Statistics Working Papers 6/05, Monash University, Department of Econometrics and Business Statistics.
- Harvey, Andrew C & Fernandes, C, 1989. "Time Series Models for Count or Qualitative Observations: Reply," Journal of Business & Economic Statistics, American Statistical Association, vol. 7(4), pages 422, October.
- Keith Ord & Ralph Snyder & Adrian Beaumont, 2010.
"Forecasting the Intermittent Demand for Slow-Moving Items,"
Monash Econometrics and Business Statistics Working Papers
12/10, Monash University, Department of Econometrics and Business Statistics.
- Ralph D. Snyder & J. Keith Ord & Adrian Beaumont, 2010. "Forecasting the Intermittent Demand for Slow-Moving Items," Working Papers 2010-003, The George Washington University, Department of Economics, Research Program on Forecasting, revised Mar 2011.
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