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Approximating the zero-norm penalized sparse signal recovery using a hierarchical Bayesian framework

Published: 17 April 2024 Publication History

Abstract

Sparse Bayesian learning (SBL) with its self-regulation and uncertainty estimation features, has become a popular topic in the field of sparse signal recovery. However, it is a challenging problem to employ zero-norm penalty on signals in the hierarchical framework of SBL. In this paper, an SBL approach that approximates the zero-norm penalized spare signal recovery is proposed based on the idea that signals can be modeled using generalized Gaussian distribution (GGDs). It should be noted that the mean and variance of GGDs are related to its shape parameters, making the direct use of GGDs in Bayesian inference impractical. To solve this problem, we derives a proposition and further build a new hierarchical Bayesian framework (HrBayFw). The proposed HrBayFw is equivalent to assign ℓ p-norm penalty to signals, and the parameter p can be designed to approximate 0. Thus, the zero-norm penalized spare signal recovery can be realized using SBL, and the use of the proposition enables tractable marginalization over all parameters. The main advantage of the proposed approach is that it achieves a lower reconstruction error than current Bayesian methods. Numerical simulations evidence that the proposed SBL approach achieves better accuracy performance in terms of normalized-mean-square-error comparing with other contemporary algorithms.

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  • (2024)Acoustic Imaging Approach for DC Magnetic Bias Analysis of Power TransformerProceedings of the 2024 International Conference on Machine Intelligence and Digital Applications10.1145/3662739.3670860(474-479)Online publication date: 30-May-2024

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Information & Contributors

Information

Published In

cover image Signal Processing
Signal Processing  Volume 218, Issue C
May 2024
278 pages

Publisher

Elsevier North-Holland, Inc.

United States

Publication History

Published: 17 April 2024

Author Tags

  1. Sparse Bayesian learning
  2. Sparse signal recovery
  3. Acoustic DOA estimation
  4. Zero-norm
  5. Bayesian inference

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  • (2024)Acoustic Imaging Approach for DC Magnetic Bias Analysis of Power TransformerProceedings of the 2024 International Conference on Machine Intelligence and Digital Applications10.1145/3662739.3670860(474-479)Online publication date: 30-May-2024

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