Zümre sınırlarının seçilmesi: Bulunması zor optimumlar

Yıl 2010, Cilt: 39 Sayı: 2, 195 - 204, 02.12.2009

Jane Horgan

Öz

Dalenius’un (1950) zümre sınırlarının belirlenmesi için bir denklem kümesi sağlamasının ardından, ortalamanın ya da toplamın Horvitz-Thompson tahminleyeninin varyansını minimize eden optimum zümre sınırlarını elde etmek için yapılan çalışmalar giderek yaygınlaşmıştır. Bu makalede, gerçekleştirilen yöntemlerin gelişimi takip edilerek şu anda hangi aşamada olduğumuz ve bulunduğumuz noktadan nereye gidebileceğimiz sorularına cevap aranmaktadır. 

Anahtar Kelimeler

Yaklaşım yöntemleri, nümerik optimizasyon, çarpıklık

Choosing the stratification boundaries: The elusive optima

Öz

Since Dalenius (1950) provided a set of equations for the determination of the stratum boundaries, there has been a proliferation of attempts to obtain the optimum stratum boundaries, those that minimise the variance of the Horvitz-Thompson estimator of mean or total. In this paper, we track the progress of such methods, and ask where we are now and where to go from here. 

Anahtar Kelimeler

Approximation methods, numerical optimisation, skewness

Kaynakça

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