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    Focus+Context Exploration of Hierarchical Embeddings

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    Date
    2019
    Author
    Höllt, Thomas
    Vilanova, Anna ORCID
    Pezzotti, Nicola ORCID
    Lelieveldt, Boudewijn P. F.
    Hauser, Helwig
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    Abstract
    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.
    BibTeX
    @article {10.1111:cgf.13711,
    journal = {Computer Graphics Forum},
    title = {{Focus+Context Exploration of Hierarchical Embeddings}},
    author = {Höllt, Thomas and Vilanova, Anna and Pezzotti, Nicola and Lelieveldt, Boudewijn P. F. and Hauser, Helwig},
    year = {2019},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.13711}
    }
    URI
    https://doi.org/10.1111/cgf.13711
    https://diglib.eg.org:443/handle/10.1111/cgf13711
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