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arXiv 1306.5984math.NAcs.NAmath.OC
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多参数Tikhonov正则化——一种增强方法

Multi-Parameter Tikhonov Regularization -- An Augmented Approach

North Carolina State University(北卡罗来纳州立大学);Texas A&M University(德克萨斯农工大学);The University of Tokyo(东京大学)

Kazufumi Ito, Bangti Jin, Tomoya Takeuchi

AI总结:

本文研究多参数正则化方法,通过增强Tikhonov正则化视角提出平衡不相容原则,提供理论分析和数值算法验证其有效性。

摘要:

我们研究多参数正则化(多重惩罚)以解决线性逆问题,促进所求对象的多种特征。我们从增强Tikhonov正则化的角度重新审视选择正则化参数的平衡原则,并推导出一种称为平衡不相容原则的新参数选择策略。提供了先验和后验误差估计以理论验证这些原则,并提供了高效实现这些原则的数值算法。展示了去噪的数值结果以证明平衡不相容原则的有效性。

英文摘要:

We study multi-parameter regularization (multiple penalties) for solving linear inverse problems to promote simultaneously distinct features of the sought-for objects. We revisit a balancing principle for choosing regularization parameters from the viewpoint of augmented Tikhonov regularization, and derive a new parameter choice strategy called the \textit{balanced discrepancy principle}. A priori and a posteriori error estimates are provided to theoretically justify the principles, and numerical algorithms for efficiently implementing the principles are also provided. Numerical results on denoising are presented to illustrate the feasibility of the balanced discrepancy principle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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