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Activity Number:
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391
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Type:
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Invited
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Date/Time:
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Thursday, August 15, 2002 : 10:30 AM to 12:20 PM
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Sponsor:
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University Consortium for Geographic Information Science
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| Abstract - #300237 |
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Title:
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GeoVisualization of Large Databases and Spatial Uncertainty
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Author(s):
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Sara Fabrikant*+ and Phaedon Kyriakidis*+
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Affiliation(s):
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University of California, Santa Barbara and University of California, Santa Barbara
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Address:
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Ellison Hall 5710, Santa Barbara, CA, 93106-4060, Ellison Hall 5710, Santa Barbara, CA, 93106-4060,
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Keywords:
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information visualization ; spatialization ; spatial uncertainty ; animation
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Abstract:
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Information visualization deals with graphically representing abstract data domains to facilitate knowledge extraction from very large data repositories. These depictions are often based on a geographic metaphor (e.g. distance, aggregation, level-of-detail), and are commonly referred to as spatializations or information spaces. The first part of this presentation outlines semantic and semiotic transformation approaches for information representation, and then applies these procedures to a large text document archive as proof-of-concept of the theoretical framework employed. GIScience offers the theoretical lenses of place, space and scale as well as visual, mathematical and cognitive approaches for constructing coherent geographic representations.
We also outline a comprehensive framework for dynamic visualization of spatial uncertainty based on concepts of random field theory. The use of realizations of random field models for animation requires a consistent evolution of the sequence of independently generated images. We demonstrate a procedure for constructing consistent new intermediate images between any two independent realizations, possibly in real time. Such intermedia
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- The address information is for the authors that have a + after their name.
- Authors who are presenting talks have a * after their name.
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