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arXiv 2202.09665math.OC
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复合单调包含的最小提升原对偶分裂算法

A primal-dual splitting algorithm for composite monotone inclusions with minimal lifting

Francisco J. Aragón-Artacho, Radu I. Boţ, David Torregrosa-Belén

摘要:

本文研究了求解复合单调包含问题的预解式分裂算法。这些一般问题的目标是寻找由线性算子组成的极大单调算子和的零点。我们的主要贡献是建立了复合单调包含的第一个最小提升原对偶分裂算法。具体而言,所提出的计划减少了基本的不动点运营商定义的积空间的尺寸相比,其他算法,而不需要额外的评估的预解算子。我们证明了这种新算法的收敛性,并分析了它在图像去模糊和去噪问题中的性能。这项工作也有助于理论的预解分裂算法的最小提升定理最近证明的Malitsky和谭计划与预解参数。

英文摘要:

In this work, we study resolvent splitting algorithms for solving composite monotone inclusion problems. The objective of these general problems is finding a zero in the sum of maximally monotone operators composed with linear operators. Our main contribution is establishing the first primal-dual splitting algorithm for composite monotone inclusions with minimal lifting. Specifically, the proposed scheme reduces the dimension of the product space where the underlying fixed point operator is defined, in comparison to other algorithms, without requiring additional evaluations of the resolvent operators. We prove the convergence of this new algorithm and analyze its performance in a problem arising in image deblurring and denoising. This work also contributes to the theory of resolvent splitting algorithms by extending the minimal lifting theorem recently proved by Malitsky and Tam to schemes with resolvent parameters.

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