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http://dx.doi.org/10.9709/JKSS.2014.23.3.019

A New Bootstrap Simulation Method for Intermittent Demand Forecasting  

Park, Jinsoo (용인대학교 경영정보학과)
Kim, Yun Bae (성균관대학교 시스템경영공학과)
Lee, Ha Neul (성균관대학교 산업공학과)
Jung, Gisun (성균관대학교 산업공학과)
Abstract
Demand forecasting is the basis of management activities including marketing strategy. Especially, the demand of a part is remarkably important in supply chain management (SCM). In the fields of various industries, the part demand usually has the intermittent characteristic. The intermittent characteristic implies a phenomenon that there frequently occurs zero demands. In the intermittent demands, non-zero demands have large variance and their appearances also have stochastic nature. Accordingly, in the intermittent demand forecasting, it is inappropriate to apply the traditional time series models and/or cause-effect methods such as linear regression; they cannot describe the behaviors of intermittent demand. Markov bootstrap method was developed to forecast the intermittent demand. It assumes that first-order autocorrelation and independence of lead time demands. To release the assumption of independent lead time demands, this paper proposes a modified bootstrap method. The method produces the pseudo data having the characteristics of historical data approximately. A numerical example for real data will be provided as a case study.
Keywords
Intermittent Demand Forecasting; Spare Parts; Part Inventory Management;
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