Simulated Operating Concepts for WIOM Implementation
Naval Postgraduate School Monterey United States
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Naval Supply Systems Command Weapon Systems Support NAVSUP WSS serves as the Navys inventory control point, managing approximately 375,000 line items. Constrained by funding, NAVSUP WSS uses the Wholesale Inventory Optimization Model WIOM, a mixed-integer linear program developed by Naval Postgraduate School faculty, to maximize customer service. Since demand distributions for different parts change over time, NAVSUP WSS updates the inputs to WIOM and reruns it quarterly. However, large changes to the solution create an administrative burden. To deal with this problem, referred to as churn, WIOM has a persistence parameter that can discourage change from one run to the next, but it is inherently at odds with customer service performance.
- Logistics, Military Facilities and Supplies
- Administration and Management