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changing dimensions as new token influence the status quo. Monitors covering
the walls could hold representations of individual data items or other miscella-
neous statistics. They could also provide expressions of other researchers, con-
nected in from a remote location. We envision the HI-SPACE itself holding the
ThemeRiver visualization, but enhanced to allow users to use hand gestures to
indicate topics of interest. They may use phicons [15], physical objects regis-
tered with the HI-SPACE as placemarkers. These could be placed as stopblocks
on themes that are not considered essential to the current study, or in some
alternative manner so to affect the themes presented. Usability studies will be
required to ascertain the usefulness of an ambient approach to such scientific
discovery, but we believe that by becoming more intrinsically involved with the
data, scientists may be able to uncover unique findings, previously undiscovered.
An artist's rendition of our concept can be seen in Fig. 11.
6 Summary
We have presented our vision for a next generation analytical environment for
scientific discovery within data-streams. By utilizing components from our re-
search portfolio in Information Analytics, Rich Interaction Environments and
Knowledge Engineering, we envision a system that can handle massive data
streams of differing data types, present the most important elements of these
streams visually and allow for advanced interactions within a group context.
Acknowledgements
The authors would like to thank their colleagues across numerous departments
at PNNL that made these individual components possible.
References
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of the University of California, available at
http://www.sims.berkeley.edu/how-much-info. (2000)
2. Gorton, I., Almquist, Justin, Cramer, Nick, Haack, Jereme, Hoza, Mark: “An E-
cient, Scalable Content-Based Messaging System”, in Proc. 7th IEEE International
Enterprise Distributed Object Computing Conference (EDOC 2003), pg. 278-285,
Brisbane, Australia. (September 2003)
3. Pacific Northwest National Laboratory's IT Showcase
http://showcase.pnl.gov/show?it/triver-prod webpage
4. Havre SL, Hetzler BG, Whitney PD and Nowell LT.: “ThemeRiver: Visualizing
Thematic Changes in Document Collections”. IEEE Transactions on Visualization
and Computer Graphics. (2002) 8(1):9-20
5. Hoffman, D.D.: “Visual Intelligence: How We Create What We See.” W.W. Norton
and Company, Inc., New York. (1998)
6. Ware, C.: “Information Visualization: Perception for Design.” San Diego: Academic
Press. (2000)
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