机构地区: 中国人民大学统计学院
出 处: 《数学的实践与认识》 2010年第3期138-145,共8页
摘 要: 通过将逆抽样设计视为一种特殊的二重抽样,建立了二重抽样和为回归估计的二重抽样的一般形式,得到了逆抽样设计算法下的回归估计.模拟分析的结果表明,以回归估计的形式引入较为合适的辅助信息,能够在估计精度上对逆抽样设计算法做出改进. Viewing inverse sampling design algorithm as a special type of two-phase sampling, we established the general form of two-phase sampling and two-phase sampling for regression estimation. Then we get the regression estimators under the inverse sampling design algorithm. The simulation study indicates that the inverse sampling design algorithm can be greatly improved in the respect of estimation accuracy by introducing appropriate auxiliary information in the form of regression estimation.
领 域: [理学] [理学] [自动化与计算机技术] [自动化与计算机技术]