Inverse Models for Estimating the Initial Condition of Spatio-Temporal Advection-Diffusion Processes
Inverse Models for Estimating the Initial Condition of Spatio-Temporal Advection-Diffusion Processes
复制标题
估算时空平流扩散过程初始条件的反演模型
DOI:
10.1080/00401706.2023.2181222
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发表时间:
2023
期刊:
影响因子:
2.5
通讯作者:
Yeo, Kyongmin
中科院分区:
文献类型:
--
作者:
Liu, Xiao;Yeo, Kyongmin
Inverse problems involve making inference about unknown parameters of a physical process using observational data. This article investigates an important class of inverse problems—the estimation of the initial condition of a spatio-temporal advection-diffusion process using spatially sparse data streams. Three spatial sampling schemes are considered, including irregular, nonuniform and shifted uniform sampling. The irregular sampling scheme is the general scenario, while computationally efficient solutions are available in the spectral domain for nonuniform and shifted uniform sampling. For each sampling scheme, the inverse problem is formulated as a regularized convex optimization problem that minimizes the distance between forward model outputs and observations. The optimization problem is solved by the Alternating Direction Method of Multipliers algorithm, which also handles the situation when a linear inequality constraint (e.g., non-negativity) is imposed on the model output. Numerical examples are presented, code is made available on GitHub, and discussions are provided to generate some useful insights of the proposed inverse modeling approaches.
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DOI:
--
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影响因子:
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