Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Numerical Algorithm for Source Determination in a Diffusion–Logistic Model from Integral Data Based on Tensor Optimization. / Zvonareva, T. A.; Kabanikhin, S. I.; Krivorotko, O. I.
в: Computational Mathematics and Mathematical Physics, Том 63, № 9, 09.2023, стр. 1654-1663.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Numerical Algorithm for Source Determination in a Diffusion–Logistic Model from Integral Data Based on Tensor Optimization
AU - Zvonareva, T. A.
AU - Kabanikhin, S. I.
AU - Krivorotko, O. I.
N1 - This work was supported by the Russian Science Foundation (project no. 18-71-10044-P) and the Mathematical Center in Akademgorodok (agreement with the Ministry of Science and Higher Education of the Russian Federation no. 075-15-2022-281). Публикация для корректировки.
PY - 2023/9
Y1 - 2023/9
N2 - An algorithm has been developed for numerically solving the source determination problem in the model of information dissemination in synthetic online social networks, described by reaction–diffusion-type equations, using additional information about the process at fixed time points. The degree of ill-posedness of the source determination problem for a parabolic equation is studied based on the analysis of singular values of the linearized operator of the inverse problem. The algorithm developed is based on a combination of the tensor optimization method and gradient descent supplemented with the A.N. Tikhonov regularization. Numerical calculations demonstrate the smallest relative error in the reconstructed source obtained by the developed algorithm in comparison with classical approaches.
AB - An algorithm has been developed for numerically solving the source determination problem in the model of information dissemination in synthetic online social networks, described by reaction–diffusion-type equations, using additional information about the process at fixed time points. The degree of ill-posedness of the source determination problem for a parabolic equation is studied based on the analysis of singular values of the linearized operator of the inverse problem. The algorithm developed is based on a combination of the tensor optimization method and gradient descent supplemented with the A.N. Tikhonov regularization. Numerical calculations demonstrate the smallest relative error in the reconstructed source obtained by the developed algorithm in comparison with classical approaches.
KW - gradient methods
KW - inverse problem
KW - reaction–diffusion model
KW - regularization
KW - source determination problem
KW - tensor optimization
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85174278544&origin=inward&txGid=e3d0e1a1eb6627a2b9320aa9d190ed00
UR - https://www.mendeley.com/catalogue/70f464d9-0c49-3e0e-9631-2f9ecf4794d7/
U2 - 10.1134/S0965542523090166
DO - 10.1134/S0965542523090166
M3 - Article
VL - 63
SP - 1654
EP - 1663
JO - Computational Mathematics and Mathematical Physics
JF - Computational Mathematics and Mathematical Physics
SN - 0965-5425
IS - 9
ER -
ID: 59265442