Yüklenici Değerlendirme Sürecinde Aralıklı Tip2 Bulanık Topsis Yöntemi Uygulaması: Küçük ve Orta Ölçekli İşletmelerde Kobi'ler Bir Örnek Olay Çalışması

Yıl 2019, Sayı: 18, 481 - 501, 01.04.2019

Ahmet Çalık

Öz

Bu çalışma, Küçük ve Orta Ölçekli İşletme KOBİ lerde en uygun yüklenicileri seçmede yardımcı olacak Çok Kriterli Karar Verme ÇKKV çerçevesi geliştirmeyi amaçlamaktadır. Önerilen çerçeve, TOPSIS yöntemi ve bulanık mantık teorisinin bir kombinasyonunu kullanmaktadır ve üç aşamadan oluşmaktadır. İlk olarak, değerlendirme kriterlerini belirlemek ve sonuçlandırmak için yüklenici seçimi ve teklif değerlendirmesi hakkında ayrıntılı bir literatür taraması derlenmiştir. Ardından belirsizliklerin üstesinden gelmek için aralık tip-2 bulanık kümeler ve dilsel değişkenler kullanılmış ve değerlendirme kriterlerinin ağırlıkları karar vericiler tarafından, aralık tip-2 bulanık sayılara dönüştürülen dilsel terimlere dayanarak elde edilmiştir. Son olarak aralık tip-2 bulanık TOPSIS yöntemi KOBİ'ler için yüklenici alternatiflerini sıralamak için kullanılmıştır. Ayrıca, Türkiye’deki bir KOBİ kuruluşunda yüklenici seçim sürecinden ilham alan bir örnek olay çalışması, önerilen yaklaşımın etkinliğini göstermek için kullanılmıştır.

Anahtar Kelimeler

Aralık tip-2 bulanık sayılar, Topsis, yüklenici seçimi, küçük ve orta ölçekli işletmeler.

Application of Interval Type-2 Fuzzy Topsis Method in Contractor Evaluation Process: A Case Study in Small and Medium Enterprises SMEs

Öz

This study aims to develop a Multi-Criteria Decision Making MCDM framework to help select the most appropriate contractors in Small and Medium Sized Enterprises SMEs . The proposed framework uses a combination of the TOPSIS method and the fuzzy logic theory and consists of three steps. First, a detailed literature review of contractor selection and tender evaluation is conducted to determine and finalize evaluation criteria. Then, interval type-2 fuzzy sets and linguistic variables are used to handle the uncertainties, and the weights of the evaluation criteria are obtained by the decision makers based on linguistic terms that are converted to interval type-2 fuzzy numbers. Finally, the interval type-2 fuzzy TOPSIS method is used to rank contractor alternatives for SMEs. In addition, an example of an SME inspired by the contractor selection process in the case study organizations in Turkey has been used to demonstrate the effectiveness of the proposed approach.

Anahtar Kelimeler

Interval type-2 fuzzy numbers, Topsis, contractor selection, small and medium enterprises.

Kaynakça

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