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词汇 Nonparametric regression
分类 英语词汇 英语翻译词典
释义

Nonparametric regression

英语例句库

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型的拟合方法中,通常假定模型的误差是等方差的。

英语百科

Nonparametric regression

 Example of a curve (red line) fit to a small data set (black points) with nonparametric regression using a Gaussian kernel smoother. The pink shaded area illustrates the kernel function applied to obtain an estimate of y for a given value of x. The kernel function defines the weight given to each data point in producing the estimate for a target point.
 Two kinds of kernels used with kernel smoothers for nonparametric regression.
 Use of Gaussian kernels for nonparametric multiplicative regression with two predictors. The weights from the kernel function for each predictor are multiplied to obtain a weight for a given data point in estimating a response variable (dependent variable) at a target point in the predictor space.

Nonparametric regression is a form of regression analysis in which the predictor does not take a predetermined form but is constructed according to information derived from the data. Nonparametric regression requires larger sample sizes than regression based on parametric models because the data must supply the model structure as well as the model estimates.

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