Abstract
The properties of a smooth continuous spline approximation are considered. The existence conditions are established and an algorithm is proposed to determine the parameters of such a spline with segments as the sum of a polynomial and an exponent. The errors of approximating a function and its derivative by such a spline with polynomial segments and segments in the form of the sum of a polynomial and an exponent are estimated.
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References
C. de Boor, A Practical Guide to Splines, Springer (1994).
P. Malachivskyy, “Continuous approximation of the characteristics of a thermal diode sensor and its sensitivity by the sum of a polynomial and an exponent with nonlinear parameter,” Vymiryuval’na Tekhnika ta Metrologiya, No. 69, 84–89 (2008).
P. Malachivskyy, Ya. Pizyur, and V. Andrunik, “Continuous and smooth uniform spline approximation of the thermal characteristics of a sensor and its sensitivity,” Vymiryuval’na Tekhnika ta Metrologiya, No. 67, 24–30 (2007).
V. V. Skopetskyy and P. S. Malachivskyy, “Hermitian interpolation by the sum of a polynomial and a nonlinear expression,” Dop. NAN Ukrainy, No. 9, 34–39 (2010).
A. A. Samarskii and A. V. Gulin, Numerical Methods [in Russian], Nauka, Moscow (1989).
Yu. S. Zav’yalov, B. I. Kvasov, and V. L. Miroshnichenko, Methods of Spline Functions [in Russian], Nauka, Moscow (1980).
N. P. Korneichuk, Splines in the Theory of Approximation [in Russian], Nauka, Moscow (1984).
A. A. Ligun and A. A. Shumeiko, “Optimal node choice in spline approximation of functions,” Dokl. AN USSR, Ser. A, No. 6, 18–22 (1984).
B. A. Popov, Uniform Approximation by Splines [in Russian], Naukova Dumka, Kyiv (1989).
Ya. Pizyur, “Approximation of functions by Hermitian splines with exponential segments,” Visn. Nats. Univ. “L’vivs’ka Politekhnika,” No. 566, 68–75 (2006).
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Translated from Kibernetika i Sistemnyi Analiz, No. 5, pp. 65–71, September–October 2011.
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Skopetskyy, V.V., Malachivskyy, P.S. & Pizyur, Y.V. Approximation by a smooth interpolation spline. Cybern Syst Anal 47, 724–730 (2011). https://doi.org/10.1007/s10559-011-9351-1
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DOI: https://doi.org/10.1007/s10559-011-9351-1