Multivariate numerical derivative by solving an inverse heat source problem
Multivariate numerical derivative by solving an inverse heat source problem
复制标题
通过求解逆热源问题进行多元数值导数
DOI:
10.1080/17415977.2017.1386187
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发表时间:
2018-08
影响因子:
1.3
通讯作者:
Anlai Xie
中科院分区:
文献类型:
--
作者:
Shufang Qiu;Zewen Wang;Anlai Xie
Abstract A method for approximating multivariate numerical derivatives is presented from multidimensional noise data in this paper. Starting from solving a direct heat conduction problem using the multidimensional noise data as an initial condition, we conclude estimations of the partial derivatives by solving an inverse heat source problem with an over-specified condition, which is the difference of the solution to the direct problem and the given noise data. Then, solvability and conditional stability of the proposed method are discussed for multivariate numerical derivatives, and a regularized optimization is adopted for overcoming instability of the inverse heat source problem. For achieving partial derivatives successfully and saving amount of computation, we reduce the multidimensional problem to a one-dimensional case, and give a corresponding algorithm with a posterior strategy for choosing regularization parameters. Finally, numerical examples show that the proposed method is feasible and stable to noise data.
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DOI:
10.1007/978-0-387-49319-0
发表时间:
1941
期刊:
--
影响因子:
--
作者:
J. Jost
通讯作者:
J. Jost
影响因子:
2.4
作者:
Wang Zewen;Wen Rongsheng
通讯作者:
Wen Rongsheng
DOI:
10.1016/j.cam.2011.07.031
发表时间:
2011-10
期刊:
J. Comput. Appl. Math.
影响因子:
--
作者:
S. Riachy;M. Mboup;J. Richard
通讯作者:
S. Riachy;M. Mboup;J. Richard
影响因子:
1.7
作者:
Huilin Xu;Jijun Liu
通讯作者:
Huilin Xu;Jijun Liu
影响因子:
1.7
作者:
T. Wei;B. Hon
通讯作者:
T. Wei;B. Hon