1. Human Computer Interaction CSC 4730-100 User System Interface CSC 8570-001 Meeting 2 September 4, 2012

2. Beginnings SOP 1: 1. When you use a (physical) key-based entry device, what do you do to the keys? A verb, please. 2. When you use a soft keyboard (e.g. iPad touchscreen), 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: 1. Circumstances of paper 2. Average text message: 7 words 3. Estimate for number of text messages sent 4. Assertion: tilt with single keypress increases speed of text entry 5. Assertion: 3 techniques for overcoming key ambiguity

9. Wigdor & Balakrishnan (5) Questions (continued) 6. Key sequence 5,3,8 has 27 meanings: calculation? 7. Assertion: 8 ambiguous key presses on mobile phone 8. Assertion: 7 characters per key with upper and lower case

10. Wigdor & Balakrishnan (6) Questions (continued) 9. Key tilt @ keystroke level: push button, tilt phone, release button 10. Absolute tilt @ keystroke level: tilt phone, push button 11. Software still available? 12. Number of participants, compensation

11. Wigdor & Balakrishnan (7) Questions (continued) 13. Corpus of text messages? 14. Each treatment? 15. Within subjects design? 16. Experimental design summary? 17. Faster than computation? 18. Analysis of variance? 19. Power law of learning? 20. Best fit curve?

12. Wigdor & Balakrishnan (8) Questions (continued) 21. Fitts’ Law vs. Fitt’s Law 22. Definitive definition of tilt parameter? 23. Model based on Accot & Zhai 24. Working relative tilt implemention? Tilt Text in action Tilt Text in actionTilt Text in actionTilt 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 Research project description 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. Experiment 8Experiment 8

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.