IJQwerty: What Difference Does One Key Change Make? Gesture Typing Keyboard Optimization Bounded ...
summary
Optimization constrains (Qwerty1, QwertyH1, one-swap) produce IJQwerty by swapping I and J; layout generation uses a gesture-character metric and a speed prediction model to optimize clarity and time. A lab study compares Qwerty, three constrained optimals and IJQwerty on phrase entry and a 20-word ×7 word repetition to expert mode protocol; IJQwerty shows equal initial speed to Qwerty, lower error rate and higher clarity, and faster entry once users reach expert mode.
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chapters (10)
- 0:00Introduction to IJQwerty
- 1:30Qwerty problems for gesture typing
- 3:22Qwerty constraints for learning
- 5:13Optimizing layout for speed and clarity
- 8:27Performance of optimized layouts
- 10:17User study design and tasks
- 11:23Phrase input task results
- 12:28Word repetition task results
- 13:37Key findings and conclusions
- 14:22Q&A session
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