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    Browsing Hierarchical Data with Multi-Level Dynamic Queries and Pruning

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    MS_95-5.pdf (5.454Mb)
    No. of downloads: 568

    Date
    1995
    Author
    Kumar, Harsha P.
    Advisor
    Shneiderman, B.
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    Abstract
    Users often must browse hierarchies with thousands of nodes in search of those that best match their information needs. The tree-browser visualization tool was specified, designed and developed for this purpose. This tool presents trees in two tightly-coupled views, one a detailed view and the other an overview. Users can use dynamic queries, a method for rapidly filtering data, to filter nodes at each level of the tree. The dynamic query panels are user-customizable. Subtrees of unselected nodes are pruned out, leading to compact views of relevant nodes.<P>The software architecture, data structures and algorithms used to achieve this behavior are specified. Usability testing of the Tree-browser, done with 8 subjects, helped assess strengths and identify possible improvements. The Tree-browser was applied to the Network Management (600 nodes) and UniversityFinder (1100 nodes) application. Future research directions are suggested.
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    http://hdl.handle.net/1903/5730
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