Satın Alma Karar Sürecinde Bulanık Topsis Yöntemi ve Dopga Algoritmasının Uygulanması: 3D Televizyon Örneği

Yıl 2018, Cilt: 6 Sayı: 4, 613 - 632, 01.12.2018

Engin Ufuk Ergul

https://doi.org/10.15317/Scitech.2018.156

Öz

Günümüzde insanların evlerinde eğlenceli vakit geçirebilecekleri aygıtların başında televizyon gelmektedir ve vakitlerinin çoğunu televizyon karşısında geçirmektedirler. Bu yüzden oldukça iyi bir televizyon satın almak isterler. Bu televizyonların başında üç boyutlu televizyonlar (3D TV) gelmektedir. Televizyon satın alma, uzun vadeli bir alışveriş olduğu için satın almadan önce oldukça titiz bir çalışmayla değerlendirme yapmak ve en iyisini belirlemek gerekmektedir. En iyi 3D TV’ nin değerlendirilmesi, kesin bir yapıya sahip olmayan karmaşık bir problemdir ve 3D TV’ nin özelliklerine bağlıdır. 3D TV’ nin karar verme sürecini etkileyen, dinamik karşıtlık oranı, tazeleme oranı, güç tüketimi, derinlik, ağırlık, maliyet, cevap süresi gibi birçok performans göstergesi vardır. Bu yüzden, 3D TV’ nin değerlendirilmesi karmaşık bir karar verme sürecidir. Bu nedenle, bu problem çok kriterli karar verme (ÇKKV) yöntemleri ile çözülebilir. Bu makalede, teknoloji marketlerinden satın alınması düşünülen sekiz popüler 3D TV, kataloglarından ve uzmanların görüşlerinden elde edilen altı özelliği kullanılarak kararlaştırılmıştır. En iyi 3D televizyonu belirlemek için yapılan çalışmada ilk olarak Bulanık İdeal Çözüme Benzerlikle Tercih Sıralama Tekniği (TOPSIS) metodu uygulanarak 3D TV’ ler sıralanmış ve daha sonra duyarlılık analizi yapılmıştır. İkinci olarak, Fuzzy TOPSIS yönteminden elde edilen 3D TV sıralamasını karşılaştırmak için Bireyin Baskınlık Gücü Genetik Algoritma (DOPGA) yöntemi uygulanarak 3D TV’ ler sıralanarak gerekli karşılaştırmalar ve değerlendirmeler yapılmış ve en iyi 3D TV seçilmiştir.

Anahtar Kelimeler

Karar verme, Evrimsel algoritmalar, Bulanık TOPSIS, MCDM, Duyarlılık analizi, 3D TV

APPLICATION OF FUZZY TOPSIS METHOD AND DOPGA ALGORITHM IN PURCHASING DECISION PROCESS: 3D TELEVISION EXAMPLE

Öz

Nowadays, television is at the head of devices where people can have fun in their homes, and people spend most of their time on television. So, they want to purchase a pretty good television. At the head of these televisions are three-dimension televisions (3D TVs). Since purchasing a television is a long-term shopping, it is necessary to evaluate it with great care and to determine its best before purchasing it. Evaluation of the best 3D TV is a complex problem with no definite structure and it depends on the features of the 3D TVs. There are many performance indicators as dynamic contrast ratio, refresh rate, power consumption on mode, depth, weight, cost, response time etc. affecting the decision-making process about 3D TVs. Therefore, evaluation of 3D TVs is a complex decision- making process. Hence, this problem can be solved by multi-criteria decision-making (MCDM) methods. In this paper, eight popular 3D TVs considered to be purchased in technology markets are compared by using six specifications obtained from its catalog and the experts’ opinion. In this study, in order to determine the best 3D TV, alternative 3D TVs were first sorted by using Fuzzy Techniques for Order Preference by Similarity to Ideal Solution (TOPSIS) method, and then, the sensitivity analysis was performed. Secondly, to compare the 3D TV ranking obtained from Fuzzy TOPSIS method, 3D TVs were ordered by using Domination Power of an Individual Genetic Algorithm (DOPGA) method and necessary comparisons and evaluations were made and the best 3D TV was selected.

Anahtar Kelimeler

Decision making, Evolutionary algorithms, Fuzzy TOPSIS, MCDM, Sensitivity analysis, 3D TV

Kaynakça

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