Robust Estimation of Generalized Estimating Equation when Data Contain Outliers
| Main Authors: | Nisa, Khoirin, Herawati, Netti |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Universitas Lampung
, 2017
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| Online Access: |
http://insist.unila.ac.id/index.php/ojs/article/view/23 http://insist.unila.ac.id/index.php/ojs/article/view/23/83 |
Daftar Isi:
- Abstract—In this paper, a robust procedure for estimating parameters of regression model when generalized estimating equation (GEE) applied to longitudinal data that contains outliers is proposed. The method is called ‘iteratively reweighted least trimmed square’ (IRLTS) which is a combination of the iteratively reweighted least square (IRLS) and least trimmed square (LTS) methods. To assess the proposed method a simulation study was conducted and the result shows that the method is robust against outliers.Keywords—GEE, IRLS, LTS, longitudinal data, regression model.