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。
NLREG can handle linear, polynomial, exponential, logistic, periodic, and general nonlinear functions.
对于多项式，它由系数，未知元以及指数组成，考虑到它包括的属性较多，故链表是一种非常不错的选择。
For the polynomial, which consists of coefficients, the unknown element and the index composition, given that it includes more properties, so the list is a very good choice.
本文构造了一种混合样条函数，它是用一次多项式函数及指数函数的结合来表示的。
In this paper we describe the construct ion of a new type of blend spline and study their interpolation formulas and estimation of error.
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