Читать книгу Intermittent Demand Forecasting - John E. Boylan - Страница 76

In this section, we have seen that, although there may be real costs associated with inventory holdings and shortages, they can be very difficult to measure reliably. For this reason, we have advocated a service level measure approach at the SKU level.

We have found that both the cycle service level () and fill rate () are measurable in a wholesaling environment, and the fill rate may be approximated by the ready rate () for non‐lumpy intermittent items in a retail environment.

There is a link between the cost‐driven approach and the service‐driven approach. If the main costs are in expediting orders, then the cycle service level is a better reflection of the costs. On the other hand, if the main costs are in loss of immediate profit or loss of goodwill, then the fill rate is a more appropriate measure.