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  • × author_ss:"Shneiderman, B."
  • × theme_ss:"Benutzerstudien"
  1. Ostroff, D.; Shneiderman, B.: Selection devices for user of an electronic encyclopedia : an empirical comparison of four possibilities (1988) 0.00 
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    Abstract
    This study measured the speed, error rates, and subjective evaluation of arrow-jump keys, a jump-mouse, number keys, and a touch screen in an interactive encyclopedia. A summary of previous studies comparing selection devices and strategies is presented to provide the background for this study. We found the touch screen to be the fastest in time, the least accurate but the overall favorite of the participants. The results are discussed and improvements are suggested accordingly
    Type
    a
  2. Hochheiser, H.; Shneiderman, B.: Understanding patterns of user visits to Web sites : Interactive Starfield visualizations of WWW log data (1999) 0.00 
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    Abstract
    HTTP server log files provide Web site operators with substantial detail regarding the visitors to their sites. Interest in interpreting this data has spawned an active market for software packages that summarize and analyze this data, providing histograms, pie graphs, and other charts summarizing usage patterns. While useful, these summaries obscure useful information and restrict users to passive interpretation of static displays. Interactive starfield visualizations can be used to provide users with greater abilities to interpret and explore web log data. By combining two-dimensional displays of thousands of individual access requests, color and size coding for additional attributes, and facilities for zooming and filtering, these visualizations provide capabilities for examining data that exceed those of traditional web log analysis tools. We introduce a series of interactive starfield visualizations, which can be used to explore server data across various dimensions. Possible uses of these visualizations are discussed, and difficulties of data collection, presentation, and interpretation are explored
    Type
    a

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