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== Authors ==
* [http://infovis-wiki.net/index.php/Williamson%2C_Christopher Williamson, Christopher]
* [http://infovis-wiki.net/index.php/Shneiderman%2C_Ben Shneiderman, Ben]
== Short description ==
The dynamic Homfinder was created to search and visualize Databases. As the name implies, the first use case scenario was a home finding application, where the user was able to find real estates, by adjusting graphical widgets (sliders, ...).
== Advantages using dynamic Homfinder ==
* Continuous update of the query results
* Fully visual interface (no query language needed)
* Reversible operations
* Immediate results
* almost no training needed
== Disadvantages using dynamic Homefinder ==
* complex dynamic Queries need a lot of screen real estate
* underlying data structures need to support rapid querying
== Suitable Datatypes ==
* data should be graphical representable
* slider widgets rely on numerical data
== Interaction ==
* multiple slider interface
* buttons
* dynamic map display that displays house location
* single view
== Example and use cases ==
Dynamic queries allow users to formulate queries by adjusting graphical widgets, such as slider, and see the results immediately. By providing a graphical visualization of the database and search results, users can find trends and excptions easily, User testing was done with eighteen undergraduate students who performed significantly faster using a dynamic queries interface compared to both a natural language system and paper printouts. The interfaces were used to explore a real-estate database and find homes meeting specific search criteria.
== Design issues ==
* Graphical widgets: The user give the input for the programm with this wigets for attributes like the number of rooms, price and distance of locations. The Dynamic Queries uses this parameters to find houses, which fullfil these conditions.
==Internal Links==
*''[[http://infovis-wiki.net/index.php/Dynamic_query Dynamic Query]]
== References ==
*[ACM, 1992] ACM, I ACM Press New York, http://portal.acm.org/citation.cfm?id=133216&coll=portal&dl=ACM&CFID=8530671&CFTOKEN=55015481

Latest revision as of 05:15, 20 February 2013

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