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Structured Bayesian Orthogonal Matching Pursuit

机译:结构化贝叶斯正交匹配追踪

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摘要

Taking advantage of the structures inherent in many sparse decompositions constitutes a promising research axis. In this paper, we address this problem from a Bayesian point of view. We exploit a Boltzmann machine, allowing to take a large variety of structures into account, and focus on the resolution of a joint maximum a posteriori problem. The proposed algorithm, called Structured Bayesian Orthogonal Matching Pursuit (SBOMP), is a structured extension of the Bayesian Orthogonal Matching Pursuit algorithm (BOMP) introduced in our previous work [1]. In numerical tests involving a recovery problem, SBOMP is shown to have good performance over a wide range of sparsity levels while keeping a reasonable computational complexity.
机译:利用许多稀疏分解固有的结构构成了有前途的研究方向。在本文中,我们从贝叶斯角度解决了这个问题。我们利用Boltzmann机器,允许考虑多种结构,并专注于解决联合最大后验问题。所提出的算法称为结构化贝叶斯正交匹配追踪(SBOMP),是我们先前工作中引入的贝叶斯正交匹配追踪算法(BOMP)的结构扩展。在涉及恢复问题的数值测试中,SBOMP在广泛的稀疏性级别上具有良好的性能,同时保持了合理的计算复杂性。

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