Bayesci Genelleştirilmiş Lineer Karma Modellerde Önsel Seçimleri ve Karşılaştırılması

Year 2017, Volume: 21 Issue: 3, 999 - 1010, 14.06.2017

Zeynep Öztürk , Mehmet Ali Cengiz

https://doi.org/10.19113/sdufbed.44445

Cited By: 1

https://izlik.org/JA69UD67RK

Abstract

Parametre tahmininde ve model seçiminde uzman görüşlerin modele katılmasını öngören Bayesci yaklaşımda en önemli nokta parametreler hakkında önsel bilgi seçimi ve kullanımıdır. Bu nedenle, bu çalışmada, önsel dağılımların seçimleri tanıtılmış, genelleştirilmiş lineer karma modeller için farklı önseller ile elde edilen modeller hem parametre tahmini hem de model uyumu anlamında karşılaştırılmıştır. Akciğer kanseri hastalarının yaşam kaliteleri ve aldıkları tedavinin çıktılarını ölçmek amacıyla yapılan bir çalışmaya ait gerçek bir veri kullanılmıştır. SAS 9.3 programında Markov Zinciri Monte Carlo algoritması ile elde edilen parametre tahminleri bulunmuş ve modeller kurulmuştur. Farklı önsel seçimleri ile Sapma Bilgi kriteri (DIC) ne göre en iyi model bilgilendirici önsel dağılım ile elde edilen model olmuştur.

Keywords

Genelleştirilmiş lineer karma modeller , Bayesci yaklaşım; Önsel dağılımlar; Önsel seçimi

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