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arXiv 1402.2999math.OC
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Morozov原理的Lagrange对偶

Lagrange duality for the Morozov principle

Xavier Bonnefond, Pierre Maréchal

摘要:

考虑到一般的线性不适定方程,我们探讨的对偶性所产生的要求,差异应该采取一个给定的值的基础上估计的噪声水平,特别是在使用Morozov原则的情况下。我们表明,在合理的假设下,对偶函数是光滑的,它的最大化指出了适当的吉洪诺夫正则化参数的值。

英文摘要:

Considering a general linear ill-posed equation, we explore the duality arising from the requirement that the discrepancy should take a given value based on the estimation of the noise level, as is notably the case when using the Morozov principle. We show that, under reasonable assumptions, the dual function is smooth, and that its maximization points out the appropriate value of Tikhonov's regularization parameter.

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