A comparison of linear and mosaic diagrams for set visualization.

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Title: A comparison of linear and mosaic diagrams for set visualization.
Authors: Luz, Saturnino1 s.luz@ed.ac.uk, Masoodian, Masood2
Source: Information Visualization. Jul2019, Vol. 18 Issue 3, p297-310. 14p.
Subjects: Venn diagrams, Set theory, Subset selection, Gantt charts, Line geometry
Abstract: Linear diagrams have been shown to compare favourably to better known forms of set visualization, such as Venn and Euler diagrams, in supporting non-interactive assessment of set relationships. Recent studies that compared several variants of linear diagrams have demonstrated that users perform best at tasks involving identification of intersections, disjointness and subsets when using a horizontally drawn linear diagram with thin lines representing sets and employing vertical lines as guide lines. The essential visual task the user needs to perform in order to interpret this kind of diagram is vertical alignment of parallel lines and detection of overlaps. Space-filling mosaic diagrams which support this same visual task have been used in other applications, such as the visualization of schedules of activities, where they have been shown to be superior to linear Gantt charts. In this article, we present an experimental comparison of linear and mosaic diagrams for visualization of set relationships, in terms of accuracy, time-to-answer and subjective ratings of perceived task difficulty. The findings show that the two visualizations are largely similar with respect to these measures, suggesting that the choice of one or the other may be solely guided by other visual design considerations. Mosaic diagrams might be more suitable, for instance, in cases where miniature diagrams representing overviews of relations in different collections of sets are required, such as in small-multiples displays. [ABSTRACT FROM AUTHOR]
Copyright of Information Visualization is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: A comparison of linear and mosaic diagrams for set visualization.
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  Data: <searchLink fieldCode="JN" term="%22Information+Visualization%22">Information Visualization</searchLink>. Jul2019, Vol. 18 Issue 3, p297-310. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Venn+diagrams%22">Venn diagrams</searchLink><br /><searchLink fieldCode="DE" term="%22Set+theory%22">Set theory</searchLink><br /><searchLink fieldCode="DE" term="%22Subset+selection%22">Subset selection</searchLink><br /><searchLink fieldCode="DE" term="%22Gantt+charts%22">Gantt charts</searchLink><br /><searchLink fieldCode="DE" term="%22Line+geometry%22">Line geometry</searchLink>
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  Label: Abstract
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  Data: Linear diagrams have been shown to compare favourably to better known forms of set visualization, such as Venn and Euler diagrams, in supporting non-interactive assessment of set relationships. Recent studies that compared several variants of linear diagrams have demonstrated that users perform best at tasks involving identification of intersections, disjointness and subsets when using a horizontally drawn linear diagram with thin lines representing sets and employing vertical lines as guide lines. The essential visual task the user needs to perform in order to interpret this kind of diagram is vertical alignment of parallel lines and detection of overlaps. Space-filling mosaic diagrams which support this same visual task have been used in other applications, such as the visualization of schedules of activities, where they have been shown to be superior to linear Gantt charts. In this article, we present an experimental comparison of linear and mosaic diagrams for visualization of set relationships, in terms of accuracy, time-to-answer and subjective ratings of perceived task difficulty. The findings show that the two visualizations are largely similar with respect to these measures, suggesting that the choice of one or the other may be solely guided by other visual design considerations. Mosaic diagrams might be more suitable, for instance, in cases where miniature diagrams representing overviews of relations in different collections of sets are required, such as in small-multiples displays. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Information Visualization is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1177/1473871618754343
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      – Code: eng
        Text: English
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        PageCount: 14
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        Type: general
      – SubjectFull: Set theory
        Type: general
      – SubjectFull: Subset selection
        Type: general
      – SubjectFull: Gantt charts
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      – SubjectFull: Line geometry
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              Text: Jul2019
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              Y: 2019
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