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Human Computer Interaction CSC 4730-100 User System Interface CSC 8570-001

Human Computer Interaction CSC 4730-100 User System Interface CSC 8570-001. Meeting 2 September 4, 2012. Beginnings. SOP 1: When you use a (physical) key-based entry device, what do you do to the keys? A verb, please.

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Human Computer Interaction CSC 4730-100 User System Interface CSC 8570-001

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  1. Human Computer InteractionCSC 4730-100User System InterfaceCSC 8570-001 Meeting 2 September 4, 2012

  2. Beginnings SOP 1: • When you use a (physical) key-based entry device, what do you do to the keys? A verb, please. • When you use a soft keyboard (e.g. iPadtouchscreen), what do you do the keys? Another verb, perhaps the same one, perhaps not.

  3. Table Experiment • Pass in printed table. • Name on paper • Any difficulties in creating the table? • How many columns? • How many rows? • What software system(s) did you use?

  4. Partnerships • Form learning pairs as follows: • Kristin & Kevin • Ken & Tyler • James & James • Andrew & Andrew • Chris & Shishir • John & Anthony • Donald & Bharath & Michael • Move to separate spaces in the room or in an adjacent room.

  5. Wigdor & Balakrishnan • Sketch the hierarchical organization of the paper. • Create a list of concepts that need further explanation, phrases that need clearer definitions, and descriptions that are just plain mysterious.

  6. Pair Reports • Paper structure • Concepts, phrases, descriptions

  7. Wigdor & Balakrishnan (3) Paper structure (9 sections: 6 main, 3 supplemental) • Abstract • Introduction • Related Work • Design Issues • Evaluation • Discussion • Conclusions and Future Work • Acknowledgements • References (15)

  8. Wigdor & Balakrishnan (4) Questions: • Circumstances of paper • Average text message: 7 words • Estimate for number of text messages sent • Assertion: tilt with single keypress increases speed of text entry • Assertion: 3 techniques for overcoming key ambiguity

  9. Wigdor & Balakrishnan (5) Questions (continued) • Key sequence 5,3,8 has 27 meanings: calculation? • Assertion: 8 ambiguous key presses on mobile phone • Assertion: 7 characters per key with upper and lower case

  10. Wigdor & Balakrishnan (6) Questions (continued) • Key tilt @ keystroke level: push button, tilt phone, release button • Absolute tilt @ keystroke level: tilt phone, push button • Software still available? • Number of participants, compensation

  11. Wigdor & Balakrishnan (7) Questions (continued) • Corpus of text messages? • Each treatment? • Within subjects design? • Experimental design summary? • Faster than computation? • Analysis of variance? • Power law of learning? • Best fit curve?

  12. Wigdor & Balakrishnan (8) Questions (continued) • Fitts’ Law vs. Fitt’s Law • Definitive definition of tilt parameter? • Model based on Accot & Zhai • Working relative tilt implemention? Tilt Text in action

  13. Wigdor & Balakrishnan (9) Grammar and form: • which vs. that (Intro, l. 12) • the user … their • Reference style • Alphabetized by last name • Date, volume, number, pages • Italics, bold

  14. HCI Research • Research project description More examples: • MacKenzie, Kauppinen, Silfverberg, Accuracy measures for evaluating computer pointing devices, Proc. SIGCHI ’01, Seattle, 10-16. • Lee & Zhai, The performance of touch screen soft buttons, Proc. SIGCHI ’09, Boston, 309-318.

  15. Next time (1) • Perform Experiment 8 and submit the results next time.

  16. Next Time (2) • Choose research project team (at most three members) and topic area. The topic should involve user interaction with small devices or the human computer interface for these devices. • Report the team and the topic area to the instructor by Tuesday, September 11 at noon.Note the early deadline.

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