Hermite Rational Function Interpolation with Error Correction

Hermite Rational Function Interpolation with Error Correction
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带误差修正的 Hermite 有理函数插值

DOI:
10.1007/978-3-030-60026-6_19
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发表时间:
2020
期刊:
Proc. Computer Algebra in Scientific Computing (CASC
影响因子:
--
通讯作者:
Yang, Zhi-Hong
Yang, Zhi-Hong
中科院分区:
--
文献类型:
--
作者:
Kaltofen, Erich L.;Pernet, Clement;Yang, Zhi-Hong

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本文将多重代数纠错码中的带纠错的Hermite插值方法推广到域上有理函数的Hermite插值,由函数和函数的导数值给出了一种插值算法,该算法能在不同的参数上定位和纠正错误,其中至少有一个值或导数值是错误的.输入的此类数的上限E。我们的算法充分过采样的有理函数,以保证一个唯一的插值。我们对,,distinct进行采样,其中是有理函数f/g的j阶导数,其中 n = ∑ 我 = 1 n ( ℓ 我 + 1 ) ≥ D F + D G + 1 + 2 e + 2 ∑ K = 1 e ℓ K ;是的上界和的上界,它们是我们算法的输入。自变量可以是极点,它的真假由一个函数值来表示。我们的结果仍然有效的fieldsof特征。该算法具有与经典Hermite插值算法相同的渐近运算复杂度,对于多项式,即,,和均匀导数轮廓,该算法专门用于基于1986年Welch-Berlekamp算法的单变量多重码译码器。
We generalize Hermite interpolation with error correction, which is the methodology for multiplicity algebraic error correction codes, to Hermite interpolation of a rational function over a fieldfrom function and function derivative values.We present an interpolation algorithm that can locate and correcterrors at distinct argumentswhere at least one of the values or values of a derivative is incorrect. The upper boundEfor the number of suchis input. Our algorithm sufficiently oversamples the rational function to guarantee a unique interpolant. We samplefor,,distinct, whereis thej-th derivative of the rational functionf/g,,,, and where N = ∑ i = 1 n ( ℓ i + 1 ) ≥ D f + D g + 1 + 2 E + 2 ∑ k = 1 E ℓ k ;is an upper bound forandan upper bound for, which are input to our algorithm. The argumentscan be poles, which is truly or falsely indicated by a function valuewith the corresponding. Our results remain valid for fieldsof characteristic. Our algorithm has the same asymptotic arithmetic complexity as that for classical Hermite interpolation, namely.For polynomials, that is,, and a uniform derivative profile, our algorithm specializes to the univariate multiplicity code decoder that is based on the 1986 Welch-Berlekamp algorithm.
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