Identifiability of interaction kernels in mean-field equations of interacting particles
Identifiability of interaction kernels in mean-field equations of interacting particles
复制标题
相互作用粒子平均场方程中相互作用核的可识别性
DOI:
10.3934/fods.2023007
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
F. Lu
中科院分区:
文献类型:
--
作者:
Quanjun Lang;F. Lu
This study examines the identifiability of interaction kernels in mean-field equations of interacting particles or agents, an area of growing interest across various scientific and engineering fields. The main focus is identifying data-dependent function spaces where a quadratic loss functional possesses a unique minimizer. We consider two data-adaptive $L^2$ spaces: one weighted by a data-adaptive measure and the other using the Lebesgue measure. In each $L^2$ space, we show that the function space of identifiability is the closure of the RKHS associated with the integral operator of inversion. Alongside prior research, our study completes a full characterization of identifiability in interacting particle systems with either finite or infinite particles, highlighting critical differences between these two settings. Moreover, the identifiability analysis has important implications for computational practice. It shows that the inverse problem is ill-posed, necessitating regularization. Our numerical demonstrations show that the weighted $L^2$ space is preferable over the unweighted $L^2$ space, as it yields more accurate regularized estimators.
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DOI:
--
发表时间:
2022-05
期刊:
--
影响因子:
--
作者:
Rentian Yao;Xiaohui Chen;Yun Yang
通讯作者:
Rentian Yao;Xiaohui Chen;Yun Yang
影响因子:
1.4
作者:
Zhongyan Li;F. Lu;M. Maggioni;Sui Tang;C. Zhang
通讯作者:
Zhongyan Li;F. Lu;M. Maggioni;Sui Tang;C. Zhang
影响因子:
3
作者:
Lu, Fei;Maggioni, Mauro;Tang, Sui
通讯作者:
Tang, Sui
DOI:
10.1073/pnas.1822012116
发表时间:
2019
影响因子:
11.1
作者:
Lu, Fei;Zhong, Ming;Tang, Sui;Maggioni, Mauro
通讯作者:
Maggioni, Mauro
DOI:
--
发表时间:
2022
期刊:
Proceedings of Mathematical and Scientific Machine Learning
影响因子:
--
作者:
Lu, Fei;Lang, Quanjun;An, Qingci
通讯作者:
An, Qingci