Tedarikçi seçimi için TOPSIS tabanlı ikizkenar yamuk tip-2 bulanık çok kriterli karar verme metodu: Tekstil sektöründe bir uygulama

Yıl 2017, Cilt: 23 Sayı: 1, 70 - 80, 01.03.2017

Berk Ayvaz , Ali Osman Kuşakcı

Öz

Tedarikçi
değerlendirme ve seçimi, nitel ve nicel çok sayıda faktörün değerlendirilmesini
gerektiren karmaşık birçok kriterli karar verme problemi olarak görülmektedir.
Gerçek hayatta, belirsizlikler ve muğlaklık bir karar verme sürecinin ayrılmaz
bir parçası olarak karşımıza çıkmaktadır. Bulanık küme teorisi, belirsizlik
durumunda karar vermemize imkân sağlayan metotlardan bir tanesidir. Bu
çalışmada, ikizkenar yamuk tip 2 bulanık TOPSIS yöntemi kısaca tanıtılmıştır.
Tanıtılan yöntem, Türkiye’de bir tekstil firmasının tedarikçi seçimi problemine
uygulanmıştır. Ayrıca, tip 2 bulanık TOPSIS yönteminin sonuçlarını desteklemek
için aynı problem tip 1 bulanık TOPSIS ile de çözülmüştür. Duyarlılık analizi
yapılarak önerilen çözümler farklı senaryolar altında incelenmiştir. Duyarlılık
analizi sonuçlarına göre tip 2 bulanık TOPSIS daha efektif ve uygun çözümler
üretmektedir.

Anahtar Kelimeler

Tip 2 bulanık TOPSIS, Çok kriterli karar verme, Tedarikçi seçimi

A trapezoidal type-2 fuzzy multi-criteria decision making method based on TOPSIS for supplier selection: An application in textile sector

Öz

Supplier
evaluation and selection includes both qualitative and quantitative criteria
and it is considered as a complex Multi Criteria Decision Making (MCDM)
problem. Uncertainty and impreciseness of data is an integral part of decision
making process for a real life application. The fuzzy set theory allows making
decisions under uncertain environment. In this paper, a trapezoidal type 2
fuzzy multi-criteria decision making methods based on TOPSIS is proposed to
select convenient supplier under vague information. The proposed method is
applied to the supplier selection process of a textile firm in Turkey. In
addition, the same problem is solved with type 1 fuzzy TOPSIS to confirm the
findings of type 2 fuzzy TOPSIS. A sensitivity analysis is conducted to observe
how the decision changes under different scenarios. Results show that the
presented type 2 fuzzy TOPSIS method is more appropriate and effective to
handle the supplier selection in uncertain environment.

Anahtar Kelimeler

Type 2 fuzzy TOPSIS, Multi criteria decision making, Supplier selection

Kaynakça

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