Abstract
Çok değişkenli normal dağılıma sahip değişkenler için elde edilen grafiksel modeller kovaryans seçimli modeller olarak adlandırılır. Kovaryans seçimli modeller değişken çiftlerinin koşullu bağımsızlığına dayanarak belirlenir. Bu çalışmada bir grafiksel modeldeki test işleminde kullanılan sapma istatistiğinin kovaryans seçimli modellerde irdelenmesi verildi. Uygulama olarak 30 farklı un örneği kullanıldı. Un örneklerinin protein miktarı, glüten miktarı ve sedimantasyon değerleri ile bu unlardan yapılan ekmeklerin, hacim verimi ve Dallman değerleri tesbit edildi. Elde edilen sonuçlar, kovaryans seçimli model ile irdelendi.
References
- DEMPSTER, A.P., (1972), Covariance Selection, Biometrics, 28, 157-75.
- LAURITZEN S.L., (1996), Graphical Models, Clarendon Press, London.
- WHITTAKER, J., (1990), Graphical Models in Applied Multivariate Statistics, John Wiley and Sons, Chichester.
- LAURITZEN, S.L. and WERMUTH N., (1989), Graphical Models for Associations Between Variables, Some of Which are Qualitative and Quantative, Annals of Statistics, 17, 31-57.
- COX, D.R. and WERMUTH N., (1993), Linear Dependencies Represented by Chain Graph (With Discussion). Statistical Science, 8. 204-218.
- EDWARDS, D., (2001), Introduction to Graphical Modeling 2nd Edition, Springer-Verlag, New York.
- ÖZKAYA, B., BAYRAK, H., GÖKPINAR F. (2002), Unun Ekmeklik Kalitesini Etkileyen Bazı Faktörler Arasındaki İlişkilerin Kovaryans Seçimli Model ile Belirlenmesi, Hububat 2002 Hububat İşleme Teknolojileri Kongre ve Sergisi, Bildiriler Kitabı, 549-555 Gaziantep.
Abstract
Graphical models for variables, which was distributed multinormal is called covariance selection models. Covariance selection models were determined by conditional independences. In this study, deviance, which is used to test conditional independences, was given. Thirty different flour samples were used in this study. Protein, wet gluten and sedimentation values of flour samples along with the loaf volume and Dallman values of bread made of these flours were investigated. Covariance selection models evaluated the obtained results.
References
- DEMPSTER, A.P., (1972), Covariance Selection, Biometrics, 28, 157-75.
- LAURITZEN S.L., (1996), Graphical Models, Clarendon Press, London.
- WHITTAKER, J., (1990), Graphical Models in Applied Multivariate Statistics, John Wiley and Sons, Chichester.
- LAURITZEN, S.L. and WERMUTH N., (1989), Graphical Models for Associations Between Variables, Some of Which are Qualitative and Quantative, Annals of Statistics, 17, 31-57.
- COX, D.R. and WERMUTH N., (1993), Linear Dependencies Represented by Chain Graph (With Discussion). Statistical Science, 8. 204-218.
- EDWARDS, D., (2001), Introduction to Graphical Modeling 2nd Edition, Springer-Verlag, New York.
- ÖZKAYA, B., BAYRAK, H., GÖKPINAR F. (2002), Unun Ekmeklik Kalitesini Etkileyen Bazı Faktörler Arasındaki İlişkilerin Kovaryans Seçimli Model ile Belirlenmesi, Hububat 2002 Hububat İşleme Teknolojileri Kongre ve Sergisi, Bildiriler Kitabı, 549-555 Gaziantep.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Statistics |
| Journal Section | Research Articles |
| Authors | |
| Publication Date | April 15, 2003 |
| Published in Issue | Year 2003 Volume: 2 Issue: 1 |
