Schneiderman, Chapter 16

Question 1

What is data visualization?

Answer 1

The use of computer-supported, interactive, visual representations of data to amplify cognition

Question 2

What is the visualization pipeline?

Answer 2

Visualization transforms data to visual form

Can be seen as a pipeline; Raw data goes in, visualization comes out

Question 3

What is external cognition

Answer 3

The use of the external world to achieve cognition

Example: Doing math in your head versus on pen and paper

Three mechanisms;

• Re-representation: New form
• Offloading: Supports memory
• Graphical constraining: Utilize visual reasoning