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Selected Papers from the 2000 Symposium on Graph Drawing
DOI: 10.7155/jgaa.00054
Graph Layout Aesthetics in UML Diagrams: User Preferences
Vol. 6, no. 3, pp. 255-279, 2002. Regular paper.
Abstract The merit of automatic graph layout algorithms is typically judged by
their computational efficiency and the extent to which they conform to
aesthetic criteria (for example, minimising the number of crossings,
maximising orthogonality). Experiments investigating the worth of such
algorithms from the point of view of human usability can take
different forms, depending on whether the graph has meaning in the
real world, the nature of the usability measurement, and the effect
being investigated (algorithms or aesthetics). Previous studies have
investigated performance on abstract graphs with respect to both
aesthetics and algorithms, finding support for reducing the number of
crossings and bends, and increasing the display of symmetry.
This paper reports on preference experiments assessing the effect of
individual aesthetics in the application domain of UML
diagrams. Subjects' preferences for one diagram over another were
collected as quantitative data. Their stated reasons for their choice
were collected as qualitative data. Analysis of this data enabled us
to produce a priority listing of aesthetics for this domain. These UML
preference results reveal a difference in aesthetic priority from
those of previous domain-independent experiments.
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