A Hybrid QFD-based Decision-Making Model for Prioritizing Supplier Selection-Economic Indicators in a Furniture Company

Abstract

In this study, a hybrid quality function deployment (QFD)-based decision-making model was proposed to prioritize economic indicators of supplier selection in a furniture company. The hybrid model is designed to prioritize economic indicators in the furniture company by measuring the influence of decision-makers through expert order weights and to ensure the effective use of step-wise weight assessment ratio analysis (SWARA) and the technique for order preference by similarity to ideal solution (TOPSIS) within the evaluation processes of a QFD-based decision mechanism. This hybrid QFD-based model has three main phases: i) Determining conceptual inputs of QFD-main structure, ii) Creating experts-weighted decision matrices, iii) Prioritizing/ranking/selecting supplier selection (SS)-economic indicator-alternatives. In the first phase, a QFD-team was formed with influential decision makers (experts) in the company's SC evaluations. Then, the two main QFD-conceptual inputs, customer needs (CNs) and supplier characteristics (SCs), were identified. The G1-order weights of experts were calculated using G1-order relation analysis. In the second phase, experts’ G1-weighted CN-importance values were computed through SWARA method. Also, experts’ G1-weighted CN-SC relationship evaluations-based decision matrices were obtained in this phase. Prioritizing/ranking/selecting SS-economic indicator-alternatives were executed in the third phase. The indicator-alternatives were prioritized by their closeness degrees calculated through TOPSIS. Consequently, financial capability, competative cost/price, and quality were determined as the most important indicator-alternatives for the furniture company using Pareto analysis.

Keywords

• QFD
• multi-criteria decision-making
• Pareto analysis
• SS-economic indicator
• furniture industry

Bir Mobilya Firmasında Tedarikçi Seçimi-Ekonomik Göstergelerinin Önceliklendirilmesi için Hibrit bir KFY-temelli Karar Verme Modeli

Öz

Bu çalışmada, bir mobilya firmasında tedarikçi seçiminde ekonomik göstergelerin önceliklendirilmesi için hibrit bir kalite fonksiyon yayılımı (KFY) tabanlı karar verme modeli önerilmiştir. Hibrit model, karar vericilerin etkisini uzman sıra ağırlıkları ile ölçerek mobilya firmasında ekonomik göstergelerin önceliklendirilmesini ve KFY tabanlı bir karar mekanizması içinde adım adım ağırlık değerlendirme analizi (SWARA) ve ideal çözüme yakınlık tekniği (TOPSIS) yöntemlerinin etkin kullanımını sağlamayı amaçlamaktadır. Bu hibrit KFY tabanlı model üç ana aşamadan oluşmaktadır: i) KFY ana yapısının kavramsal girdilerinin belirlenmesi, ii) Uzman ağırlıklı karar matrislerinin oluşturulması, iii) Tedarikçi seçimi (TS) ekonomik gösterge alternatiflerinin önceliklendirilmesi / sıralanması / seçilmesi. İlk aşamada, firmanın tedarik zinciri değerlendirmelerinde etkili karar vericilerden (uzmanlardan) oluşan bir KFY ekibi oluşturulmuştur. Ardından, iki ana KFY kavramsal girdisi olan müşteri ihtiyaçları (Mİ’ler) ve tedarikçi özellikleri (TÖ’ler) belirlenmiştir. Uzmanların G1-sıra ağırlıkları, G1-sıra ilişkisi analizi kullanılarak hesaplanmıştır. İkinci aşamada, uzmanların G1 ağırlıklı Mİ-önem değerleri SWARA yöntemi ile hesaplanmıştır. Ayrıca, uzmanların G1 ağırlıklı Mİ - TÖ ilişki değerlendirmelerine dayalı karar matrisleri bu aşamada elde edilmiştir. Üçüncü aşamada, tedarikçi seçimi ekonomik gösterge alternatiflerinin önceliklendirilmesi / sıralanması / seçilmesi gerçekleştirilmiştir. Alternatifler, TOPSIS ile hesaplanan yakınlık derecelerine göre önceliklendirilmiştir. Sonuç olarak, Pareto analizi kullanılarak, mobilya firması için finansal yetenek, rekabetçi maliyet/fiyat ve kalite en önemli gösterge alternatifleri olarak belirlenmiştir.

Anahtar Kelimeler

• KFY
• çok-kriterli karar-verme
• Pareto analizi
• TS-ekonomik göstergesi
• mobilya sektörü

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