Continuous analogue to iterative optimization for PDE-constrained inverse problems
Continuous analogue to iterative optimization for PDE-constrained inverse problems
复制标题
连续模拟偏微分方程约束反问题的迭代优化
DOI:
10.1080/17415977.2018.1494167
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发表时间:
2018
影响因子:
1.3
通讯作者:
B. Kaltenbacher
中科院分区:
文献类型:
--
作者:
R. Boiger;A. Fiedler;J. Hasenauer;B. Kaltenbacher
The parameters of many physical processes are unknown and have to be inferred from experimental data. The corresponding parameter estimation problem is often solved using iterative methods such as steepest descent methods combined with trust regions. For a few problem classes also continuous analogues of iterative methods are available. In this work, we expand the application of continuous analogues to function spaces and consider PDE (partial differential equation)-constrained optimization problems. We derive a class of continuous analogues, here coupled ODE (ordinary differential equation)–PDE models, and prove their convergence to the optimum under mild assumptions. We establish sufficient bounds for local stability and convergence for the tuning parameter of this class of continuous analogues, the retraction parameter. To evaluate the continuous analogues, we study the parameter estimation for a model of gradient formation in biological tissues. We observe good convergence properties, indicating that the continuous analogues are an interesting alternative to state-of-the-art iterative optimization methods.
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DOI:
10.1093/bioinformatics/btx676
发表时间:
2018-02-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Stapor P;Weindl D;Ballnus B;Hug S;Loos C;Fiedler A;Krause S;Hroß S;Fröhlich F;Hasenauer J
通讯作者:
Hasenauer J
影响因子:
10.6
作者:
B. F. Nielsen;O. M. Lysaker;P. Grøttum
通讯作者:
P. Grøttum
影响因子:
5.5
作者:
Rosenblatt M;Timmer J;Kaschek D
通讯作者:
Kaschek D
影响因子:
2.1
作者:
A. Potschka
通讯作者:
A. Potschka
影响因子:
2.9
作者:
A. Potschka
通讯作者:
A. Potschka