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Direct Incorporation of \(L_1\)-Regularization into Generalized Matrix Learning Vector Quantization

  • Falko LischkeEmail author
  • Thomas Neumann
  • Sven Hellbach
  • Thomas Villmann
  • Hans-Joachim Böhme
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10841)

Abstract

Frequently, high-dimensional features are used to represent data to be classified. This paper proposes a new approach to learn interpretable classification models from such high-dimensional data representation. To this end, we extend a popular prototype-based classification algorithm, the matrix learning vector quantization, to incorporate an enhanced feature selection objective via \(L_1\)-regularization. In contrast to previous work, we propose a framework that directly optimizes this objective using the alternating direction method of multipliers (ADMM) and manifold optimization. We evaluate our method on synthetic data and on real data for speech-based emotion recognition. Particularly, we show that our method achieves state-of-the-art results on the Berlin Database of Emotional speech and show its abilities to select relevant dimensions from the eGeMAPS set of audio features.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Falko Lischke
    • 1
    Email author
  • Thomas Neumann
    • 1
  • Sven Hellbach
    • 1
  • Thomas Villmann
    • 2
  • Hans-Joachim Böhme
    • 1
  1. 1.HTW DresdenDresdenGermany
  2. 2.Saxony Institute for Computational Intelligence and Machine LearningUniversity of Applied Sciences MittweidaMittweidaGermany

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