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arXiv math/0601159math.NAcs.NA
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关于高斯插值的高阶误差界

On the High-Level Error Bound for Gaussian Interpolation

Lin-Tian Luh

AI总结:

本文解决了Madych和Nelson提出的高斯插值误差界中常数C无法计算或近似的问题,给出了C的具体值。

摘要:

众所周知,Madych和Nelson在1992年提出了一个非常强大的高斯函数误差界,形式为$| f(x)-s(x)| \leq (Cd)^{ rac{c}{d}}\left\Vert f ight\Vert_{h}$,其中$C,c$是常数,$h$是高斯函数,$s$是插值函数,$d$称为填充距离,粗略地说,它衡量插值点之间的间距。当$d o 0$时,这个误差界迅速变小。常数$C$和$c$非常敏感,它们的微小变化会导致误差界的巨大变化。如[9]所示,$c$可以计算,但$C$无法计算甚至近似。这是径向基函数理论中的一个著名问题。本文的目的是回答这个问题。

英文摘要:

It's well-known that there is a very powerful error bound for Gaussians put forward by Madych and Nelson in 1992. It's of the form$% | f(x)-s(x)| \leq (Cd)^{\frac{c}{d}}\left\Vert f\right\Vert_{h}$ where $C,c$ are constants, $h$ is the Gaussian function, $% s$ is the interpolating function, and d is called fill distance which, roughly speaking, measures the spacing of the points at which interpolation occurs. This error bound gets small very fast as $d\to 0$. The constants $C$ and $c$ are very sensitive. A slight change of them will result in a huge change of the error bound. The number $c$ can be calculated as shown in [9]. However, $C$ cannot be calculated, or even approximated. This is a famous question in the theory of radial basis functions. The purpose of this paper is to answer this question.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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