Browsing Hierarchical Data with Multi-Level Dynamic Queries and Pruning

dc.contributor.authorKumar, Harshaen_US
dc.contributor.authorPlaisant, Catherineen_US
dc.contributor.authorShneiderman, Benen_US
dc.date.accessioned2004-05-31T21:03:36Z
dc.date.available2004-05-31T21:03:36Z
dc.date.created1995-03en_US
dc.date.issued1998-10-15en_US
dc.description.abstractUsers often must browse hierarchies with thousands of nodes in search of those that best match their information needs. The PDQ Tree-browser (Pruning with Dynamic Queries) 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. Usability testing of the PDQ Tree-browser, done with 8 subjects, helped assess strengths and identify possible improvements. The PDQ Tree-browser was used in Network Management (600 nodes) and UniversityFinder (1100 nodes) applications. A controlled experiment, with 24 subjects, showed that pruning significantly improved performance speed and subjective user satisfaction. Future research directions are suggested. (Also cross-referenced as CAR-TR-772) (Also cross-referenced as ISR-TR-95-53)en_US
dc.format.extent8580613 bytes
dc.format.mimetypeapplication/postscript
dc.identifier.urihttp://hdl.handle.net/1903/434
dc.language.isoen_US
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.relation.isAvailableAtTech Reports in Computer Science and Engineeringen_US
dc.relation.isAvailableAtComputer Science Department Technical Reportsen_US
dc.relation.ispartofseriesUM Computer Science Department; CS-TR-3474en_US
dc.relation.ispartofseriesCAR-TR-772en_US
dc.relation.ispartofseriesISR-TR-95-53en_US
dc.titleBrowsing Hierarchical Data with Multi-Level Dynamic Queries and Pruningen_US
dc.typeTechnical Reporten_US

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