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Contribution to Book
A Hybrid Scattering Transform for Signals with Isolated Singularities
2021 55th Asilomar Conference on Signals, Systems, and Computers (2021)
  • Michael Perlmutter, University of California, Los Angeles
  • Jieqian He, Michigan State University
  • Mark Iwen, Michigan State University
Abstract
The scattering transform is a wavelet-based model of Convolutional Neural Networks originally introduced by S. Mallat. Mallat’s analysis shows that this network has desirable stability and invariance guarantees and therefore helps explain the observation that the filters learned by early layers of a Convolutional Neural Network typically resemble wavelets. Our aim is to understand what sort of filters should be used in the later layers of the network. Towards this end, we propose a two-layer hybrid scattering transform. In our first layer, we convolve the input signal with a wavelet filter transform to promote sparsity, and, in the second layer, we convolve with a Gabor filter to leverage the sparsity created by the first layer. We show that these measurements characterize information about signals with isolated singularities. We also show that the Gabor measurements used in the second layer can be used to synthesize sparse signals such as those produced by the first layer.
Keywords
  • scattering transforms,
  • wavelets,
  • sparsity,
  • deep learning,
  • time-frequency analysis
Disciplines
Publication Date
2021
Publisher
IEEE
ISBN
9781665458283
DOI
https://doi.org/10.1109/IEEECONF53345.2021.9723364
Citation Information
Perlmutter, Michael; He, Jieqian; Iwen, Mark; and Hirn, Matthew. (2021). "A Hybrid Scattering Transform for Signals with Isolated Singularities". In 2021 55th Asilomar Conference on Signals, Systems, and Computers (pp. 1322-1329). https://doi.org/10.1109/IEEECONF53345.2021.9723364