Variable selection in finite mixture of regression models using the skew-normal distribution
Variable selection in finite mixture of regression models using the skew-normal distribution
复制标题
使用偏正态分布的有限混合回归模型中的变量选择
DOI:
10.1080/02664763.2019.1709051
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发表时间:
2019-12
期刊:
影响因子:
--
通讯作者:
Lin Dai
中科院分区:
文献类型:
--
作者:
Junhui Yin;Liucang Wu;Lin Dai
Variable selection in finite mixture of regression (FMR) models is frequently used in statistical modeling. The majority of applications of variable selection in FMR models use a normal distribution for regression error. Such assumptions are unsuitable for a set of data containing a group or groups of observations with asymmetric behavior. In this paper, we introduce a variable selection procedure for FMR models using the skew-normal distribution. With appropriate choice of the tuning parameters, we establish the theoretical properties of our procedure, including consistency in variable selection and the oracle property in estimation. To estimate the parameters of the model, a modified EM algorithm for numerical computations is developed. The methodology is illustrated through numerical experiments and a real data example.
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