A Bi-Level Mathematical Model Proposal for Procurement Process of Liquid Good in Competitive Environment

Öz

Modeling of the competitive decision making process between two players which have opposite objectives is defined as “Network Interdiction Problem” in the literature. In this study, procurement process in which two competitive firms procure liquid good from the same set of the suppliers is handled. This process is designed as a network interdiction problem for competition environment in which one of the firms tries to procure goods with minimum cost, the other one tries to maximize the procurement cost of the competitor with owned interdiction budget, as well. In this problem transforming the structure of supply chain into minimum cost flow network, a bi-level mathematical model is proposed

Anahtar Kelimeler

• Minimum cost flow network, competitive procurement process, network interdiction problem

Rekabet Ortamında Akışkan Mal Satın Alma Süreci için İki Seviyeli Matematiksel Model Önerisi

Öz

Literatürde zıt amaçları olan iki taraf arasındaki rekabetçi karar verme sürecinin modellenmesi “Şebeke Engelleme Problemi” olarak ifade edilmektedir. Bu çalışmada aynı tedarikçi kümesini kullanan rekabetçi iki firmanın akışkan mal satın alma süreci ele alınmıştır. Bu süreç, firmalardan birinin minimum maliyetle mal tedarik etmeye çalıştığı, diğerinin ise sahip olduğu engelleme bütçesi ile rakibinin minimum satın alma maliyetini en büyüklemeye çalıştığı bir rekabet ortamı için şebeke engelleme problemi şeklinde tasarlanmıştır. Bu problemdeki tedarik zinciri yapısı minimum maliyetli akış şebekesine dönüştürülerek, iki seviyeli (bi-level) matematiksel bir model önerilmiştir

Anahtar Kelimeler

• Minimum maliyetli akış şebekesi, rekabetçi satın alma süreci, şebeke engelleme problemi

Kaynakça

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