A global smoothing method based on polynomial splines is used to estimate the coefficient functions in functional-coefficient linear autoregressive models.
基于多项式样条全局光滑方法，建立函数系数线性自回归模型中系数函数的样条估计。
NLREG can handle linear, polynomial, exponential, logistic, periodic, and general nonlinear functions.
NLREG能够处理线性，多项式，指数，对数，周期性地，一般的非线性函数。
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