被逼近函数

在用楔形基函数逼近本身就是楔形函数或者它们的线性组合时，可以把被逼近函数看作沿着固定方向传播的波。

The approximated function can be regarded as the plane wave spreaded along some directions when the approximation to limited linear combined ridge basis function of plane wave is ridge functions or their combination .

改进了神经网络模型的算法，使其在样本数据相对较少的条件下也能很好地在性态上模拟被逼近函数。

The Neural Networks models is improved , it can simulate the approached function commendably even at the case of the little number of the samples .

插值方法是利用函数在某区间中已知离散因变量的值，作出适当的特定函数，使之与被逼近函数在区间其他点上函数值一致的一种方法。

The interpolation is that according to the given values of discrete points to construct a specific function such that it has the same values at all points in the interval .

插值问题是根据给定的离散点去构造一个连续的简单函数，使它与被逼近函数在给定点处的函数值相等。

The interpolation is that according to the given values of discrete points to construct a simple continuously function such that it have the same function values of at all the given points exactly .

当被逼近样条函数空间维数较大时，计算量会很大。

When the dimension of the spline space becomes bigger , the computing speed is slower .

然而，这两种方法都需要解一个和被逼近样条函数空间维数相同元的线性方程组。

However , both of them require to solve a system of linear equations with as many unknowns as the dimension of the spline space .

本文给出了在Bergman空间中函数被多项式逼近的阶与被逼近函数是ρ级σ型整函数的充要条件。

In this paper the necessary and sufficient conditions were obtained for the relationship between the order of approximation to analytic functions in the Bergman Space and the order , type of the approximated functions as entire functions .