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HCI

HCI. Meeting 14 Tues, October 19. Research Project. Experimental materials due next time. Raskin, Chapter 5. Unification Look for design principles Look for task hierarchy Distinguish between tasks and operations Operations implement unit tasks

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HCI

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  1. HCI Meeting 14 Tues, October 19

  2. Research Project • Experimental materials due next time

  3. Raskin, Chapter 5 Unification • Look for design principles • Look for task hierarchy • Distinguish between tasks and operations • Operations implement unit tasks • Tasks exist independently of implementation • Answer the following questions

  4. Menu Creation • Perform a task analysis for Raskin’s idea of user-created menus (p.100). • What should the commands for the menu creation system be? NB. A task analysis determines the tasks and their hierarchy the user expects to complete using the system and any time constraints on the tasks (e.g. creating a document before printing it)

  5. Interaction Form Assume all interactions of the form: take some user content and perform the desired operation on it. • What is the model for this description? • How is the user content specified? • How is the desired interaction invoked? • What are the potential results?

  6. Text Editing What operations do you use to change: • hear to here • <br></tr> to 2.37</tr> • pan to plan to plane to piece • A long URL that ends image42.jpg to one that ends image45.jpg Generalize these examples to editing rulesfor text input.

  7. Quick-Correct What are the quick-correct operations for: • A keyboard keystroke • Pointing • Selection • A button tap What design principles should quick-correct operations satisfy?

  8. Display Parameter Settings Referring to Raskin’s list of system responses to display parameter incompatibility (p.147), • What is the error cost of each? (In what units is error cost measured?)

  9. Allowable Commands • What commands can be given in • Notepad • Windows Explorer • Netscape Navigator • What design principles determine the set of allowable commands?

  10. Saving and Retrieving Named Files • Perform a task analysis for saving and retrieving named files through an application program. • What should the set of commands be?

  11. Calculator vs. Computer • Perform a GOMS analysis of the calculator vs. computer example, page 141. • Does this analysis depend on the application in which you need the calculation?

  12. Desirable Operations • Give examples of application programs where one can do the commands in the list on page 142.

  13. Transformers • Perform a task analysis for changing the format of a file.

  14. Next Time

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