Video in CHI 97 Video program , Atlanta GA, 22-27 March 1997, ACM, New York NY. A two page summary also appears in CHI 97 Extended Abstracts, ACM New York, 202-203.
Dynamic queries have been shown to be an effective technique to browse information, and to find patterns and exceptions. Dynamic queries involve theinteractive control by a user of visual query parameters that generate rapid (100 ms update), animated, and visual displays of database search results. The data of early implementations was stored in local memory to guarantee optimal speed. Problems arise when the data is very large and distributed over a network. To overcome the problems of slow networks and data volume we propose a two-phase approach to query formulation using query previews and query refinements. Preview mechanisms have been used in the past and we believe that their use will be a ajor component of successful networked information systems interfaces.
This video is also available from HCIL as part of the 1996 HCIL Video report.