Multi-Objective Modeling of Lateral Transshipment in Supply Chain

Yıl 2018, Cilt: 34 Sayı: 3, 36 - 44, 30.12.2018

Betül Ayman , İbrahim Doğan

Öz

The flexible mechanism of lateral transshipment approaches provide high service levels with low inventory levels by sharing stock among the inventory points at the same stage of supply chain. In this study, lateral transshipment in supply chain inventory management has been modeled as multi-objective problem to examine the effect on different conflicting goals such as cost and customer service level. These objectives were analyzed with different cost parameters in a supply chain model containing a supplier and n retailers by performing a lateral transshipment policy proposed in the literatüre by modifying it. Pareto optimum solutions were analyzed by using multi-objective genetic algorithm to decide when and how much quantity should be shared and the best base stock values simultaneously. 

Anahtar Kelimeler

Supply Chain, Lateral Transshipment, Multi-Objective Optimization

Tedarik Zincirinde Yatay Paylaşım Yaklaşımının Çok Amaçlı Modellenmesi

Öz

Tedarik
zincirinin aynı aşamasındaki elemanları arasında ürün değişimine izin verilen
yatay paylaşım yaklaşımlarının esnek mekanizması, yüksek hizmet seviyelerini
düşük stok seviyeleri ile sağlamaya olanak tanımaktadır. Bu çalışmada tedarik
zinciri stok yönetiminde yatay paylaşım politikası maliyet ve müşteri hizmet
düzeyi gibi birbiriyle çelişen farklı amaçlar üzerindeki etkisini incelemek
için çok amaçlı olarak modellenmiştir. Literatürde önerilen bir yatay paylaşım
politikası esas alınarak bir tedarikçi ve birden fazla bayi içeren bir tedarik
zinciri modelinde maliyet ve müşteri hizmet düzeyi amaçları farklı maliyet
parametreleriyle çözümlenmiş ve bu amaçların değişimleri incelenmiştir.
Periyodik gözden geçirilen sisteme sahip bayiler arasında ne zaman ve hangi
miktarlarda paylaşım yapılması gerektiğine ve en iyi baz stok değerlerine eş
zamanlı olarak karar vermek üzere çok amaçlı genetik algoritma kullanılarak
pareto optimum çözümler bulunarak analiz edilmiştir.

Anahtar Kelimeler

Tedarik Zinciri, Yatay Paylaşım, Çok Amaçlı Optimizasyon

Kaynakça

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