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arXiv 1408.3979stat.MEmath.STstat.TH
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边界回归模型的假设检验

Hypotheses tests in boundary regression models

Holger Drees, Natalie Neumeyer, Leonie Selk

摘要:

考虑一个具有单侧误差的非参数回归模型,回归函数在一般Hölder类中。我们估计的回归函数通过最小化的局部积分的多项式逼近。我们显示了统一的简单回归估计的收敛速度,以及一个光滑的版本。这些比率延续到具有对称和有界误差分布的均值回归模型。在这样的设置中,对于在端点附近集中足够质量的不规则误差分布,比对于通常的规则分布获得更快的速率。结果证明渐近$\sqrt{n}$等价的残差为基础的(顺序)经验分布函数的(顺序)经验分布函数的未观察到的错误的情况下,不规则的误差分布。这一结果与具有规则误差的均值回归的相应结果有显著的不同。它可以很容易地应用于开发的拟合优度测试的误差分布。我们提出了一些例子,并在模拟研究中研究小样本性能。我们进一步讨论了渐近分布自由假设检验的独立性的误差分布的测量点和单调性的边界函数以及。

英文摘要:

Consider a nonparametric regression model with one-sided errors and regression function in a general Hölder class. We estimate the regression function via minimization of the local integral of a polynomial approximation. We show uniform rates of convergence for the simple regression estimator as well as for a smooth version. These rates carry over to mean regression models with a symmetric and bounded error distribution. In such a setting, one obtains faster rates for irregular error distributions concentrating sufficient mass near the endpoints than for the usual regular distributions. The results are applied to prove asymptotic $\sqrt{n}$-equivalence of a residual-based (sequential) empirical distribution function to the (sequential) empirical distribution function of unobserved errors in the case of irregular error distributions. This result is remarkably different from corresponding results in mean regression with regular errors. It can readily be applied to develop goodness-of-fit tests for the error distribution. We present some examples and investigate the small sample performance in a simulation study. We further discuss asymptotically distribution-free hypotheses tests for independence of the error distribution from the points of measurement and for monotonicity of the boundary function as well.

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