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Some studies on nonpolynomial interpolation and error analysis
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DOI：10.1016/j.amc.2014.07.049.png)
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In this paper, we propose nonpolynomial and Hermite nonpolynomial interpolation with multiple parameters and present method to determine optimal value of parameters which generate minimum error in approximation. The generalized error analysis results for nonpolynomial and Hermite nonpolynomial interpolations are derived. We establish theoretical relationship among nonpolynomial, polynomial interpolation and the Fourier series, and propose solution to Runge's phenomenon through nonpolynomial interpolation. The Hermite nonpolynomial cubic spline, nonpolynomial cubic spline interpolation methods and their error analysis are presented. Numerical simulations are carried out for the analysis of error in cubic spline interpolations. Proposed method is applied to the analysis of various time series to show comparison in errors between polynomial and nonpolynomial spline interpolations, and to Empirical Mode Decomposition (EMD) to illustrate practical usefulness of the results. (C) 2014 Elsevier Inc. All rights reserved.
Keyword:
Polynomial and nonpolynomial interpolations
Runge's phenomenon
Spline interpolations
Empirical Mode Decomposition
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期刊
IF:
3.4
论文数:
2.3W
被引数:
3.3W
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