Several information visualization techniques have been developed in the last few years due to the need of representing and analyzing the huge amount of data generated by several applications or made available through the World Wide Web. These techniques are usually interactive and provided as part of a graphical user interface. Information visualization… (More)
Evaluating user interfaces is usually accomplished to detect design problems in layout and interaction. One possible way to evaluate image quality in computer graphics is visual inspection by experts. Information visualization techniques are usually presented showing their use in experimental situations, employing some kind of analysis. Nevertheless, few… (More)
Some of the search tasks users perform on the Web aim at complementing the information they are currently reading in a Web page: they are ancillary search tasks. Currently, the standard way to support such ancillary searches follows an inside-out approach, which means that query results are shown in a new window/tab or as a replacement of the current page.… (More)
This paper reports the layout generation approach used in a new technique for visualizing hierarchies which provides both focus and context visualization. The hierarchy is represented as a node-edge diagram separated in two connected sub-diagrams that show the node of interest and its context.