INFORMATION VISUALIZATION...INFORMATION VISUALIZATION Alvitta Ottley Washington University in St....
Transcript of INFORMATION VISUALIZATION...INFORMATION VISUALIZATION Alvitta Ottley Washington University in St....
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INFORMATION VISUALIZATIONAlvitta OttleyWashington University in St. Louis
CSE 557A | Aug 29, 2016
Slide Acknowledgements: Mariah Meyer, University of Utah
Remco Chang, Tufts University
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GETTING TO KNOW YOU…
Show of hand:• Know Java?• Taken Graphics?• Taken HCI?• Proficient with GUI frameworks or toolkit• Eg. Processing, D3, Javascript/ HTML 5, openGL, Java Swing, etc. • Design Background?• Have taken courses in art or design
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What does Visualizationmean to you?
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A visualization is a visual representation of abstract data to aid human cognition
• Must be based on data• The results must be readable, recognizable and useful
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How much data are there?
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2010: 1.2 zettabytes2013: 4.4 zettabytes2020: ~40 zettabytes
Gantz et al 2011
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2010: 1.2 zettabytes2013: 4.4 zettabytes2020: ~40 zettabytes
Gantz et al 2011
Zettabyte ~= 1, 000, 000, 000, 000, 000, 000, 000 or 1021
200x all words ever spoken by humans
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The ability to take data—to be able to understand it, to process it, to extract value from it, to visualize it, to communicate it—that’s going to be a hugely important skill in the next decades... [Hal Varian, Google’s Chief Economist]
Because now we really do have essentially free and ubiquitous data. So the complimentary scarce factor is the ability to understand that data and extract value from it. [The McKinsey Quarterly , Jan 2009]
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WHY does Visualization work?
- Cognition is limited
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WHY does Visualization work?
- Cognition is limited
- Memory is limited
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calculation exercise…
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calculation exercise…34
x 28
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calculation exercise…
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calculation exercise…79
x 16
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HOW does Visualization work?
- Uses perception to point out interesting things.
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GLNSAGGKLDSANGNASDGNKLANSDGLKNASDGNDFVMDGJERKJVERJVJKENJLVNEKVJENVJEAJVJNDJVNAAJBVRKLVLJKD
How many R’s are there?
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GLNSAGGKLDSANGNASDGNKLANSDGLKNASDGNDFVMDGJERKJVERJVJKENJLVNEKVJENVJEAJVJNDJVNAAJBVRKLVLJKD
How many R’s are there?
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GLNSAGGKLDSANGNASDGNKLANSDGLKNASDGNDFVMDGJERKJVERJVJKENJLVNEKVJENVJEAJVJNDJVNAAJBVRKLVLJKD
What is the complexity (in BigO Notation) to find the single B?
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GLNSAGGKLDSANGNASDGNKLANSDGLKNASDGNDFVMDGJERKJVERJVJKENJLVNEKVJENVJEAJVJNDJVNAAJBVRKLVLJKD
What is the complexity (in BigO Notation) for a human to find the single B?
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Consider the following dataset:
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Consider the following dataset:
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Anscombe’s Quartet
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WHY do we create visualizations?
• answer questions• generate hypotheses• make decisions• see data in context• expand memory• support computational analysis• find patterns• tell a story• inspire
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Examples of visualizations
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Visualization for Storytelling
Napoleon’s March to Moscow (War of 1812)
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Visualization for spotting trends
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Visualization for information dissemination
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Visualization for information dissemination
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Visualization for information dissemination
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Examples of “bad” visualizations
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Examples of “bad” visualizations
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Examples of “bad” visualizations
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Visualizations that probably should not exist
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Questions?
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General Information
Four Assignments One Final ProjectWeekly Paper Discussions
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