The local integro splines with optimized knots
The local integro splines with optimized knots
复制标题
具有优化节点的局部积分样条
DOI：
10.1007/s40314-019-0960-z
复制
发表时间：
2019
影响因子：
2.6
通讯作者：
Zhang Yali
中科院分区：
文献类型：
--
作者：
Guo Xiao;Han Xuli;Zhang Yali
本文提出了一种新的局部积分样条节点优化方法。将节点计算问题转化为凸优化问题，在凸优化问题中，节点的个数和节点的位置可以同时自动确定。数值算例表明，用本文方法得到的逼近积分样条在满足拟合精度的同时，节点数少。
This paper presents a new approach to optimize knots of local integro splines that approximate given function integrals. The problem of computing knots is reformulated asconvex optimization problem, in which both the number of knots and their locations can be automatically determined at the same time. The numerical examples show that approximation integro splines obtained by our method have few knots, while satisfying the fitting precision.