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Infromation Visualization

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wei-an chen

on 20 April 2010

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Transcript of Infromation Visualization

Information Visualization Using vision to think presenter: Wei-An Chen
instructor: Hao-Hua Chiu
Apr20, 2010 reference: Readings in Information Visualization: Using Vision to Think
authors: Card Mackinlay, Shneiderman, Morgan Kaufmann the use of computer-supported, interactive, visual representations of abstract data to amplify cognition External cognition conclusion
how visualization amplifies cognition
increasing resource
reduce search
enhanced recognition of patterns
perceptual interface
perceptual monitoring
manipulating medium
Visualization level infosphere http://well-formed.eigenfactor.org/radial.html information workspace knowledge tools visual objects Visual
Structures Views Data
Tables Raw
Data Data
Transformation Visual
Mappings View Transformations location probe
viewpoint control
distortion
spatial substrate
marks and connection/enclosure
retinal properties
temporal encoding
Visual Perception Fndamental principle of Gestalt perception Law of Closure
Law of Similarity
Law of Proximity
Law of Symmetry
Law of Continuity
Law of Common Fate Exercise
What is the external cognition type? (nomograph, navigation chart, or diagram)
What is the visualization level? (infosphere, information workspace, knowledge tools, or visual objects )
What kind of retinal properties does it use? (position, size, gray scale, oriantation, color, texture or shape)
What kind of view transformation was it applied? (location probe, viewpoint control, or distortion) Visual Structures spatial substrate marks retinal properties temporal encoding View Transformations location probe viewpoint control distortion connection/enclosure
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