Variable Selection for Partially Linear Varying Coefficient Transformation Models with Censored Data

• 作者: Jiang Du Ying Lu Zhongzhan Zhang
• 来源期刊: 统计学期刊(英文)
• 学科: 数学
• 关键词: Variable Selection Maximum LIKELIHOOD Estimation SPLINE SMOOTHING
• 年，卷（期）: 2012,（5）
• 页码范围: 565-570
• 页数: 6页
• 分类号: O1

摘要

In this paper, we study the problem of variable selection for varying coefficient transformation models with censored data. We fit the varying coefficient transformation models by maximizing the marginal likelihood subject to a shrink- age-type penalty, which encourages sparse solutions and hence facilitates the process of variable selection. We further provide an efficient computation algorithm to implement the proposed methods. A simulation study is conducted to evaluate the performance of the proposed methods and a real dataset is analyzed as an illustration.