Local Empirical Likelihood Diagnosis of Varying Coefficient Density-Ratio Models Based on Case-Control Data

• 作者: Jiangtao Dai Lin Zheng Shuling Wang
• 来源期刊: 统计学期刊(英文)
• 学科: 数学
• 关键词: Varying-Coefficient Density-Ratio Model LOCAL Empirical Likelihood Outliers Influence Analysis
• 年，卷（期）: 2014,（9）
• 页码范围: 751-756
• 页数: 6页
• 分类号: O1

摘要

In this paper, a varying-coefficient density-ratio model for case-control studies is developed. We investigate the local empirical likelihood diagnosis of varying coefficient density-ratio model for case-control data. The local empirical log-likelihood ratios for the nonparametric coefficient functions are introduced. First, the estimation equations based on empirical likelihood method are established. Then, a few of diagnostic statistics are proposed. At last, we also examine the performance of proposed method for finite sample sizes through simulation studies.