Focus+context exploration of hierarchical embeddings

T. Hollt, A. Vilanova , N. Pezzotti, Boudewijn Lelieveldt, H. Hauser

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
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Hierarchical embeddings, such as HSNE, address critical visual and computational scalability issues of traditional techniques for dimensionality reduction. The improved scalability comes at the cost of the need for increased user interaction for exploration. In this paper, we provide a solution for the interactive visual Focus+Context exploration of such embeddings. We explain how to integrate embedding parts from different levels of detail, corresponding to focus and context groups, in a joint visualization. We devise an according interaction model that relates typical semantic operations on a Focus+Context visualization with the according changes in the level-of-detail-hierarchy of the embedding, including also a mode for comparative Focus+Context exploration and extend HSNE to incorporate the presented interaction model. In order to demonstrate the effectiveness of our approach, we present a use case based on the visual exploration of multi-dimensional images.

Original languageEnglish
Pages (from-to)569-579
Number of pages11
JournalComputer Graphics Forum
Issue number3
Publication statusPublished - 2019
EventEUROVIS 2019: 21th EG/VGTC Conference on Visualization - Porto, Portugal
Duration: 3 Jun 20197 Jun 2019
Conference number: 21


  • Concepts and paradigms
  • Human-centered computing
  • Information visualization
  • Visualization theory

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