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arXiv 1208.6464cs.ITmath.IT
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一种新的稀疏先验贝叶斯压缩感知算法

Bayesian compressed sensing with new sparsity-inducing prior

Zai Yang, Lihua Xie, Cishen Zhang

摘要:

稀疏贝叶斯学习(SBL)是压缩感知(CS)中稀疏信号恢复的一种流行方法。在SBL中,信号稀疏性信息被利用,假设一个稀疏诱导的信号,然后使用贝叶斯推理估计先验。在本文中,一个新的稀疏诱导先验的信号恢复和有效的算法。的主要算法产生一个稀疏的解决方案比现有的SBL方法,同时保持其理想的性能。一维合成信号和二维图像的数值模拟验证了我们的分析,并表明,稀疏信号的信号恢复精度和计算速度的算法优于其SBL同行。其改进的性能也证明了在CS与其他国家的最先进的方法相比。

英文摘要:

Sparse Bayesian learning (SBL) is a popular approach to sparse signal recovery in compressed sensing (CS). In SBL, the signal sparsity information is exploited by assuming a sparsity-inducing prior for the signal that is then estimated using Bayesian inference. In this paper, a new sparsity-inducing prior is introduced and efficient algorithms are developed for signal recovery. The main algorithm is shown to produce a sparser solution than existing SBL methods while preserving their desirable properties. Numerical simulations with one-dimensional synthetic signals and two-dimensional images verify our analysis and show that for sparse signals the proposed algorithm outperforms its SBL peers in both the signal recovery accuracy and computational speed. Its improved performance is also demonstrated in comparison with other state-of-the-art methods in CS.

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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