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Dimensionality Reduction of SDSS Spectra with Variational Autoencoders

  • Authors: Stephen K. N. Portillo, John K. Parejko, Jorge R. Vergara, and Andrew J. Connolly

2020 The Astronomical Journal 160 45.

  • Provider: AAS Journals

Caption: Figure 15.

Top 10 spectra outliers in VAE latent space using the local outlier factor algorithm, plotted with offsets added to separate the spectra. The faded parts of the spectra are bad pixels or outside the wavelength range of the original spectrum and are infilled with iterative PCA (see Section 3).

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