Methods It is discussed by nonparametric piecewise polynomial estimation and least squares estimation.

方法利用非参数分段多项式估计和最小二乘法进行讨论。

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Methods It is discussed by nonparametric piecewise polynomial estimation and least squares estimation.

方法利用非参数分段多项式估计和最小二乘法进行讨论。

youdao