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11th International Conference Information Visualization (IV '07)
Interactive Tag Maps and Tag Clouds for the Multiscale Exploration of Large Spatio-temporal Datasets
Zurich, Switzerland
July 04-July 06
ISBN: 0-7695-2900-3
Aidan Slingsby, City University, London, EC1V 0HB, UK
Jason Dykes, City University, London, EC1V 0HB, UK
Jo Wood, City University, London, EC1V 0HB, UK
Keith Clarke, University of California, Santa Barbara, CA 93106-4060, USA
'Tag clouds' and 'tag maps' are introduced to represent geographically referenced text. In combination, these aspatial and spatial views are used to explore a large structured spatio-temporal data set by providing overviews and filtering by text and geography. Prototypes are implemented using freely available technologies including Google Earth and Yahoo!?s Tag Map applet. The interactive tag map and tag cloud techniques and the rapid prototyping method used are informally evaluated through successes and limitations encountered. Preliminary evaluation suggests that the techniques may be useful for generating insights when visualizing large data sets containing geo-referenced text strings. The rapid prototyping approach enabled the technique to be developed and evaluated, leading to geovisualization through which a number of ideas were generated. Limitations of this approach are reflected upon. Tag placement, generalisation and prominence at different scales are issues which have come to light in this study that warrant further work.
Citation:
Aidan Slingsby, Jason Dykes, Jo Wood, Keith Clarke, "Interactive Tag Maps and Tag Clouds for the Multiscale Exploration of Large Spatio-temporal Datasets," iv, pp.497-504, 11th International Conference Information Visualization (IV '07), 2007
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