ETKİNLİĞİN ÖLÇÜMÜNDE BAYEZGİL YAKLAŞIM: DİNAMİK STOKASTİK SINIR MODELİ BULGULARI

Yıl 2020, Cilt: 16 Sayı: 2, 389 - 412, 31.12.2020

Ramazan Ekinci

Öz

Literatürde yapılan etkinlik analizlerinde genellikle üretim sürecinde kullanılan girdilerin gecikmeli uyarlama süreçleri dikkate alınmamaktadır. Dinamik uyarlama sürecini gözardı eden bu yaklaşımlarla tahmin edilen etkinlik skorları bu nedenle sapmalı olabilmektedir. Bu çalışmada 2005 – 2017 dönemi için Türkiye imalat sanayinde faaliyet gösteren 106 firmanın maliyet etkinlik düzeyleri dinamik stokastik sınır analizi ile tahmin edilmiştir. Elde edilen sonuçlara göre, kalıcılık parametresinin değeri bire yakın ve oldukça yüksektir. Buna göre firmaların uyarlama maliyetlerinden kaynaklanan etkinsizlikteki kalıcılığın yüksek olduğu söylenebilir. Firmaların dinamik etkinlik skorları ortalamasının statik etkinlik skorları ortalamasından düşük olması bu sonucu destekleyen diğer bir bulgudur.

Anahtar Kelimeler

Dinamik sınır modeli, Dinamik etkinlik, Uyarlama maliyetleri

BAYESIAN APPROACH IN THE MEASUREMENT OF THE EFFICIENCY: DYNAMIC STOCHASTIC FRONTIER MODEL FINDINGS

Öz

In the efficiency analysis conducted in the literature, the lagged adjustment process of inputs used in the production process is usually not taken into account. Therefore, the efficiency scores estimated by these approaches, which ignore the dynamic adjustment costs, can be biased. In this study, the level of cost efficiency for 106 firms operating in Turkey's manufacturing industry over the period 2005 – 2017, is estimated by dynamic stochastic frontier analysis. The results indicate that, the persistence parameter is fairly close to unity. Accordingly, one can say that the persistence in inefficiency caused by the adjustment costs of the firms is high. The fact that the average of dynamic efficiency scores of the firms is lower than the average of static efficiency scores is another finding that supports this result.

Anahtar Kelimeler

Dynamic stochastic frontier, Dynamic efficiency, Adjustment costs

Kaynakça

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