This paper mainly studies the nonparametric regression estimation model of local polynomial.

论文主要研究了非参数局部多项式回归估计模型。

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This paper introduced the selection principle and method about a reasonable kernel function and bandwidth based on the nonparametric kernel density estimation and kernel regression estimation.

本文基于非参数核密度估计与核回归估计的基础上，介绍了合理选取核函数及窗宽的原则和方法。

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