Reading of electronic documents: the usability of linear, fisheye, and overview+detail interfaces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Navigation patterns and usability of zoomable user interfaces with and without an overview
ACM Transactions on Computer-Human Interaction (TOCHI)
Proceedings of the working conference on Advanced visual interfaces
A user study on visualizing directed edges in graphs
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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In this study, we experimentally evaluated two GUI prototypes (named "split" and "integrated") for parametric CAD modeling. Participants in the study were asked to perform a number of 3D model comprehension tasks, using both interfaces. The tasks themselves were classified into three classes: parameterization, topological and geometrical tasks. We measured the task completion times, error rates, and user satisfaction for both interfaces. The experimental results showed that task completion times are significantly shorter when the "split" interface is being used, in all cases of interest: 1) tasks taken as a whole and 2) tasks viewed by task type. There was no significant difference in error rates between the two interfaces; however, error rate was significantly higher in the case of parameterization tasks (for both interfaces). User satisfaction was significantly higher for the "split" interface. The study gave us a better understanding of the human performance when perceiving and comprehending parametric CAD models, and offered insight into the usability aspects of the two studied interfaces; we also believe that the knowledge obtained could be of practical utility to implementers of parametric CAD modeling packages.