6. Conclusions and future research
The WSS method of bootstrapping does have advantages, most notably
the ability to simulate demand values that have not appeared in
history. However, whether or not theWSS method is worth the considerable
added complexity is questionable. Parametric methods are simpler,
and the simplest method of all, SES, performs well. In the messy
electronics data, SES produces fewer backorders thanWSS at all levels
of inventory investment.