Abstract:
Glyph-based visualization can offer elegant and concise presentation of
multivariate information while enhancing speed and ease in visual search
experienced by users. As with icon designs, glyphs are usually created based
on the designers' experience and intuition, often in a spontaneous manner.
Such a process does not scale well with the requirements of applications
where a large number of concepts are to be encoded using glyphs. To alleviate
such limitations, we propose a new systematic process for glyph design by
exploring the parallel between the hierarchy of concept categorization and
the ordering of discriminative capacity of visual channels. We examine the
feasibility of this approach in an application where there is a pressing need
for an efficient and effective means to visualize workflows of biological
experiments. By processing thousands of workflow records in a public archive
of biological experiments, we demonstrate that a cost-effective glyph design
can be obtained by following a process of formulating a taxonomy with the aid
of computation, identifying visual channels hierarchically, and defining
application-specific abstraction and metaphors.