Projection-averaging-based cumulative covariance and its use in goodness-of-fit testing for single-index models
Projection-averaging-based cumulative covariance and its use in goodness-of-fit testing for single-index models
复制标题
基于投影平均的累积协方差及其在单指标模型拟合优度检验中的应用
DOI:
10.1016/j.csda.2021.107301
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发表时间:
2021-12
影响因子:
1.8
通讯作者:
Zhou Yeqing
中科院分区:
文献类型:
--
作者:
Xu Kai;Zhou Yeqing
A projection-averaging-based cumulative divergence to characterize the conditional mean independence is proposed. As a natural extension of Zhou et al.(2020), the new metric has several appealing features. It ranges from zero to one, and equals zero if and only if the conditional mean independence holds. It has an elegant closed-form expression that involves no tuning parameters, making it easy to implement. The sample estimator of new metric is n-consistent under the conditional mean independence and root-n-consistent otherwise. A goodness-of-fit test for single-index models based on the variant of the proposed metric is further introduced, which generalizes the projected-based test of Escanciano (2006) to a semiparametric regression setting that allows an unspecified link function. The proposed test is consistent against any global alternatives and can detect the local alternatives distinct from the null at the parametric rate of O (n− 1/2). The effectiveness of our proposals is demonstrated through simulation examples and a real application.
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DOI:
10.1214/09-aoas312
发表时间:
2009-01-01
期刊:
The annals of applied statistics
影响因子:
--
作者:
Kosorok MR
通讯作者:
Kosorok MR
影响因子:
1.4
作者:
Yingcun Xia;Dixin Zhang
通讯作者:
Yingcun Xia;Dixin Zhang
影响因子:
--
作者:
BLUM, JR;KIEFER, J;ROSENBLATT, M
通讯作者:
ROSENBLATT, M
DOI:
10.1080/01621459.2014.887012
发表时间:
2014-07-03
影响因子:
3.7
作者:
Shao, Xiaofeng;Zhang, Jingsi
通讯作者:
Zhang, Jingsi
影响因子:
2.7
作者:
Zhu L;Xu K;Li R;Zhong W
通讯作者:
Zhong W