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arXiv 2212.00524math.STstat.TH
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半函数部分线性回归模型的线性检验

Testing linearity in semi-functional partially linear regression models

Yongzhen Feng, Jie Li, Xiaojun Song

摘要:

提出了半函数部分线性回归模型线性检验的Kolmogorov-Smirnov型统计量和Cramér-von Mises型统计量.我们的检验统计量是基于一个残差标记的经验过程索引的随机投影的功能协变量,这是能够规避“灾难的维数”所带来的功能协变量。建立了零值、固定替代和局部替代序列以$n^{1/2}$速率收敛于零值的检验统计量的渐近性质。一个简单的野生引导程序建议估计的临界值,需要进行测试在实际应用中。从一个广泛的模拟研究的结果表明,我们的测试表现相当不错,在有限的samples.Finally,我们将我们的测试Tecator和AEMET数据集,以检查是否线性的假设是由这些数据集支持。

英文摘要:

This paper proposes a Kolmogorov-Smirnov type statistic and a Cramér-von Mises type statistic to test linearity in semi-functional partially linear regression models. Our test statistics are based on a residual marked empirical process indexed by a randomly projected functional covariate,which is able to circumvent the "curse of dimensionality" brought by the functional covariate. The asymptotic properties of the proposed test statistics under the null, the fixed alternative, and a sequence of local alternatives converging to the null at the $n^{1/2}$ rate are established. A straightforward wild bootstrap procedure is suggested to estimate the critical values that are required to carry out the tests in practical applications. Results from an extensive simulation study show that our tests perform reasonably well in finite samples.Finally, we apply our tests to the Tecator and AEMET datasets to check whether the assumption of linearity is supported by these datasets.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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