Improving Deep Learning Projections by Neighborhood Analysis

Terri Modrakowski, Mateus Espadoto*, Alexandre Falcao, Nina Hirata, Alex Telea

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

Abstract

Visualization of multidimensional data is a difficult task, for which there are many tools. Among these tools, dimensionality reduction methods were shown to be particularly helpful to explore data visually. Techniques with good visual separation are very popular, such as those from the SNE-class, but those often are computationally expensive and non-parametric. An approach based on neural networks was recently proposed to address those shortcomings, but it introduces some fuzziness in the generated projection, which is not desired. In this paper we thoroughly explain the parameter space of this neural network approach and propose a new neighborhood-based learning paradigm, which further improves the quality of the projections learned by the neural networks, and we illustrate our approach on large real-world datasets.
Original languageEnglish
Title of host publicationComputer Vision, Imaging and Computer Graphics Theory and Applications
Subtitle of host publication15th International Joint Conference, VISIGRAPP 2020 Valletta, Malta, February 27–29, 2020, Revised Selected Papers
PublisherSpringer
Pages127–152
Number of pages26
Edition1
ISBN (Electronic)978-3-030-94893-1
ISBN (Print)978-3-030-94892-4
DOIs
Publication statusPublished - 23 Jan 2022

Publication series

NameCommunications in Computer and Information Science
PublisherSpringer
Volume1474
ISSN (Print)1865-0929
ISSN (Electronic)1865-0937

Keywords

  • Dimensionality reduction
  • Machine learning
  • Neural networks
  • Multidimensional projections

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