CSC 8570 -- USI

1
CSC 8570 -- USI

• Class Meeting 5
• September 26, 2007

2
Opening Questions

• Who among you has read at least three Harry
  Potter books?
• Who among you is a Sudoku puzzle addict? Or
  solver?
• What is the pattern and hidden meaning in the
  research team names?

3
Research Project

• Short presentation
• One spokesperson
• Five minutes
• Hypothesis, variables, initial experimental
  design
• PowerPoint
• Questions and comments from the audience

4
Research Teams

• Aspen Allison, Lakshmanan, Tyler
• Bailey Andy, Brian, Franny
• Conifer Chris, Lou, Tim
• Durango Mayur, Prasad
• Estes Park Ashley, Kurt, Sharon

5
Research Project Issues

• Add to bibliography goal is at least 15
  references
• Design experiment
• Create experimental tools
• Complete IRB form
• Start writing first two sections
• Dates
• IRB form finished no later than 10/8
• Progress Report 1 due 10/24

6
User Goals

• Based on last weeks discussion and other
  sources, heres a list of user goals.
• Users want systems that
• Are powerful, meaning fast and efficient
• Have proper functionality

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User Goals (2)

1. Minimize the possibility for (tragic) errors
2. Allow easy recovery from misdirected actions
3. Are easily learned and easily relearned
4. Fit a cognitive model based on past experience

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User Goals (3)

1. Are easy to maintain, including set up
2. Are flexible
3. Stimulate creative problem solving
4. Are personally satisfying

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Understanding Cognitive Dimensions

• What are they?
• Meaning from name
• Meaning from examples
• Meaning from individual definitions
• How can they be applied?
• To notation (in a user interface?)
• To representations
• To understanding

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Generating Examples

• Bad interface examples
• GUEPs violated
• CDs not well exploited

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Synthesizing Edge and Blackwell

• Referring to your concept map
• What is its structure?
• What is its shape?
• What is its top-level concept?

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Relating GUEPs and CDs

• Match the 14 cognitive dimensions to the 9 GUEPs
  looking for overlapping and orthogonal ideas.
• Summarize the results by creating a 14 by 9 array
  whose cell entries describe the relationship
  between the ith CD and the jth GUEP

13
Leave Behind

• Concept map of the Edge and Blackwell paper

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Next Time

• Continue work on research project, completing
  experimental material and IRB form
• Catch up on reading
• Button Exercise (see below)

15
Button Exercise

• For your assigned two buttons on Windows
  Explorer, determine for each
• Its syntax
• Its semantics
• Which cognitive dimensions and which GUEPs its
  behavior exemplifies.
• Hand in your written report next time.

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Button Assignment

1. Back
2. Forward
3. Search
4. Folders
5. Views
6. Go
7. Name

1. Size
2. Type
3. Date modified
4. X (right of Folders)
5. ? (next to dialog box)
6. View
7. File

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Research Team Meetings