Query previews in networked information systems

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dc.contributor.authorDoan, Khoaen_US
dc.contributor.authorPlaisant, Catherineen_US
dc.contributor.authorShneiderman, Benen_US
dc.date.accessioned2004-05-31T21:04:10Z
dc.date.available2004-05-31T21:04:10Z
dc.date.created1995-09en_US
dc.date.issued1998-10-15en_US
dc.description.abstractIn a networked information system, there are three major obstacles facing users in a querying process: slow network performance, large data volume and data complexity. In order to overcome these obstacles, we propose a two-phase approach to query form ulation: Query Preview and Query Refinement. In the Query Preview phase, users formulate an initial query by selecting desired attribute values. The volume of matching data sets is shown graphically on preview bars which aid users to rapidly eliminate undesired data sets, and focus on a manageable number of relevant data sets. Query previews also prevent wasted steps by eliminating zero-hit queries. When the estimated number of data sets is low enough, users submit the initial query to the network, which returns the metadata of the data sets for the Query Refinement phase. Using this approach, we developed dynamic query user interfaces allowing users to formulate their queries using direct manipulation in an exploratory manner across a networked environment. (Also cross-referenced as CAR-TR-788 (Also cross-referenced as ISR-TR-95-90en_US
dc.format.extent23092002 bytes
dc.format.mimetypeapplication/postscript
dc.identifier.urihttp://hdl.handle.net/1903/441
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-3524en_US
dc.relation.ispartofseriesCAR-TR-788en_US
dc.relation.ispartofseriesISR-TR-95-90en_US
dc.titleQuery previews in networked information systemsen_US
dc.typeTechnical Reporten_US

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