A numerical method for solving retrospective inverse problem of fractional parabolic equation

A numerical method for solving retrospective inverse problem of fractional parabolic equation
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求解分数抛物型方程回顾性反问题的数值方法

DOI:
10.1016/j.cam.2022.114366
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发表时间:
2022-04
影响因子:
2.4
通讯作者:
A.M. Kardashevsky
A.M. Kardashevsky
中科院分区:
数学2区
文献类型:
--
作者:
Lingde Su;Jian Huang;V.I. Vasil’ev;Ao Li;A.M. Kardashevsky

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构造了一种求解时间分数阶抛物型方程反问题的有效数值方法。我们采用隐式有限差分法离散问题,并为反问题,我们提出了一个共轭梯度型正则化方法来解决离散不适定的线性系统。通过比较不同的误差和结果与不同的扰动数据在几个数值实验中,我们的方法被证明是解决反问题,即使有一些噪音的测量,有效和稳定。
An effective numerical method for solving the inverse problem of time fractional parabolic equation is constructed in this paper. We use implicit finite difference method to discretize the problem and for the inverse problem we propose a conjugate gradient type regularization method to solve the discretized ill-posed linear systems. By comparing the different errors and the results with different perturbed data in several numerical experiments, our method is shown to solve the inverse problem, even with some noisy measurements, efficiently and stably.
DOI: 10.1088/0266-5611/28/7/075010
发表时间: 2012-06
期刊: Inverse Problems
影响因子: 2.1
作者:
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DOI: 10.1016/j.matcom.2018.03.006
发表时间: 2018-09-01
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期刊: Math. Comput.
影响因子: --
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DOI: 10.1016/j.jcp.2013.11.017
发表时间: 2014-02-15
影响因子: 4.1
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DOI: 10.1023/a:1016539022492
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期刊: NONLINEAR DYNAMICS
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