Fuzzy modeling approach to on-hand stock levels estimation in (R, S) inventory system with lost sales

Ester Guijarro ^[1] ; Eugenia Babiloni ^[1] ; Maria Jose Canós-Darós ^[2] ; Lourdes Canós-Darós ^[1] ; Sofía Estellés ^[1]
1. [1] Universidad Politécnica de Valencia
  
  Universidad Politécnica de Valencia
  
  Valencia, España
2. [2] Universitat de València
  
  Universitat de València
  
  Valencia, España
Localización: Journal of Industrial Engineering and Management, ISSN-e 2013-0953, Vol. 13, Nº. 3, 2020, págs. 464-474
Idioma: inglés
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Resumen
- One challenge in inventory control models is to know the stock available at the beginning of the cycle to satisfy future demands, i.e. to know the on-hand stock levels at order delivery. For inventory managers, this knowledge is necessary to both determine service levels and establish the control parameters of the inventory policy. However, the calculation of on-hand stock levels when unfilled demand is lost is mathematically complex since on-hand stock cannot be negative by definition. The purpose of this paper is to propose a new approach to estimate on-hand stock levels when the inventory is periodically reviewed and unfilled demand is lost, through the use of fuzzy techniques