首页> 外文期刊>Australian & New Zealand journal of statistics >Efficient error variance estimation in non-parametric regression
【24h】

Efficient error variance estimation in non-parametric regression

机译:非参数回归中的高效错误方差估计

获取原文
获取原文并翻译 | 示例
           

摘要

Error variance estimation plays a key role in the analysis of homogeneous non-parametric regression models. For a random design model, most methods in the literature for error variance estimation assume the independence between the predictor variable X and the error epsilon. In this work, we derive the optimal semi-parametric efficiency bound for the error variance sigma 2=var(epsilon) without such an independence assumption. A residual-based efficient estimator for sigma 2 is proposed and its asymptotic normality is established. An extensive simulation study is conducted, which shows that our proposed estimator works very favourably against competitors. A simple real-data example is also presented.
机译:误差方差估计在均匀非参数回归模型的分析中扮演关键作用。对于一个随机的设计模型,对于错误方差估计的文献中的大多数方法假设预测器变量x和epsilon之间的独立性。在这项工作中,我们从没有这种独立假设的情况下得出了错误方差Sigma 2 = var(epsilon)的最佳半参数效率。提出了一种基于Sigma 2的高效估计,并建立了渐近正态性。进行了广泛的仿真研究,表明我们所提出的估计人员对竞争对手的工作非常有利。还呈现了一个简单的真实数据示例。

著录项

获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号