Cluster Information of Non-Sampled Area in Small Area Estimation

Rahma Anisa, Anang Kurnia, and Indahwati

Department of Statistics, Bogor Agricultural University – Indonesia

Abstract

Empirical Best Linear Unbiased Predictor (EBLUP) has been widely used to predict parameters in area with small or even zero sample size. The problem is when this model should be used to predict the parameters of non-sampled area. Ordinary EBLUP predicted the parameters using synthetic model which ignore the area random effects because lack of non-sampled area information. Thus, those prediction will be distorted based on a single line of the synthetic model. One of idea that developed in this paper is to modify the prediction model by adding cluster information by assuming that there are similiarities among particular areas. These information will be added into the model to modify the intercept of prediction model. Another approach is by adding random effects of auxiliary variable into the previous model in order to modify both intercept and slope of the prediction model. In this paper, simulation process is carried out  to study the performance of the proposed models compared with ordinary EBLUP. All models evaluated based on the value of Relative Bias (RB) and Relative Root Mean Squares Error (RRMSE). The result of simulation showed that the addition of cluster information can improve the ability of the model to predict ​​on non-sampled areas.

 

Keywords: EBLUP, Clustering, Linear Mixed Models.

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