arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.11227math.OC
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求解连续最小割和最大流问题的有效ADMM和分裂方法

Efficient ADMM and Splitting Methods for Continuous Min-cut and Max-flow Problems

Hongpeng Sun, Xuecheng Tai, Jing Yuan

摘要:

波茨模型有很多应用。它等价于一些最小割流和最大流模型。原始对偶法已被用来解决这些问题。由于模型结构的特殊性,其收敛性证明一直是一个难题。在这项工作中,我们开发了两种新的,预处理,和过度放松的交替方向法的乘法器(ADMM)的收敛保证这些模型。使用所提出的预条件或块预条件,我们得到加速度与预处理ADMM的超松弛变体。对于Potts模型,我们还考虑了预处理和过松弛的Douglas-Rachford分裂方法。我们的框架可以处理两个标签或多个标签的问题,适当的块预条件的基础上Eckstein-Bertsekas和Fortin-Glowinski分裂技术。

英文摘要:

The Potts model has many applications. It is equivalent to some min-cut and max-flow models. Primal-dual algorithms have been used to solve these problems. Due to the special structure of the models, convergence proof is still a difficult problem. In this work, we developed two novel, preconditioned, and over-relaxed alternating direction methods of multipliers (ADMM) with convergence guarantee for these models. Using the proposed preconditioners or block preconditioners, we get accelerations with the over-relaxation variants of preconditioned ADMM. The preconditioned and over-relaxed Douglas-Rachford splitting methods are also considered for the Potts model. Our framework can handle both the two-labeling or multi-labeling problems with appropriate block preconditioners based on Eckstein-Bertsekas and Fortin-Glowinski splitting techniques.

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