摘要
在非均匀节点情形下,给出了用偶数阶B样条为基函数构造具有高阶多项式再生性和高阶收敛率的拟插值算子的一种方法,分别构造了无限区间R和有限区间[a,b]上的拟插值算子(Qf)(x)和(Qhf)(x),最后通过数值实验说明所给算子的特性.
A method is given to construct quasi-interpolation operator on non-uniform data points with B-splines of even order ,which possesses polynomial reproducing property of high order and high order approximation rates. With the method, the quasi-interpolation operators (Of) (x) and (Qhf) (x) are constructed on R and [ a, b ] respectively. At last, some numerical experiments are given to illustrate the features of the operator.
出处
《北华大学学报(自然科学版)》
CAS
2016年第6期701-707,共7页
Journal of Beihua University(Natural Science)
基金
吉林省教育厅科学技术研究项目(2015131)
北华大学博士启动基金项目
关键词
拟插值
非均匀B样条
多项式再生
quasi-interpolation
non-uniform B-splines
polynomial reproduction