Convolutional Sparse Support Estimator Network (CSEN): From Energy-Efficient Support Estimation to Learning-Aided Compressive Sensing

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Support estimation (SE) of a sparse signal refers to finding the location indices of the nonzero elements in a sparse representation. Most of the traditional approaches dealing with SE problems are iterative algorithms based on greedy methods or optimization techniques. Indeed, a vast majority of them use sparse signal recovery (SR) techniques to obtain support sets instead of directly mapping the nonzero locations from denser measurements (e.g., compressively sensed measurements). This study proposes a novel approach for learning such a mapping from a training set. To accomplish this objective, the convolutional sparse support estimator networks (CSENs), each with a compact configuration, are designed. The proposed CSEN can be a crucial tool for the following scenarios: 1) real-time and low-cost SE can be applied in any mobile and low-power edge device for anomaly localization, simultaneous face recognition, and so on and 2) CSEN’s output can directly be used as “prior information,” which improves the performance of sparse SR algorithms. The results over the benchmark datasets show that state-of-the-art performance levels can be achieved by the proposed approach with a significantly reduced computational complexity.

Original languageEnglish
Article number9484349
Pages (from-to)290 - 304
Number of pages15
JournalIEEE Transactions on Neural Networks and Learning Systems
Issue number1
Early online date2021
Publication statusPublished - 2023
Publication typeA1 Journal article-refereed


  • Convolution
  • Dictionaries
  • Estimation
  • Face recognition
  • Image reconstruction
  • Learned compressive sensing (CS)
  • Noise measurement
  • sparse signal representation
  • support recovery.
  • Training

Publication forum classification

  • Publication forum level 3

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Computer Networks and Communications
  • Artificial Intelligence


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