ECE992: Ubiquitous Computing Scribe

1
ECE992 Ubiquitous ComputingScribe

• Gaze-enhanced scrolling techniques Manu Kumar
  Terry Winograd
• Evaluating user interface systems research Dan
  R. Olsen Jr.
• Spoken words activating text-to-speech through
  eye closure Fabian Hemmert Danijela Djokic
  Reto Wettach

Presented by Michael A. Farrar
October 2, 2008
2
Gaze-enhanced scrolling techniquesManu Kumar
Terry Winograd

• Strengths
• Format (problem, goal, hypothesis, approach, and
  results)
• Exploits a valuable source of input
• Short, informative explanation of their
  algorithms
• Avoided complex mathematical equations
• Presented many alternative gaze-enhanced
  scrolling methods
• Gaze-enhanced page up/page down
• Eye-in-the-middle
• Smooth scrolling with gaze-repositioning
• Discrete scrolling with gaze-repositioning
• Reduced number of user interactions

3

• Weaknesses
• Lack of an evaluation on off-screen gaze-actuated
  buttons
• Evaluation, in general, seemed narrow
• Four page paper, one paragraph evaluation (too
  short)
• Conclusion seemed to be more of a look into the
  future of gaze-enhanced input than an overview
  of their work and findings

Gaze-enhanced scrolling techniques - Manu Kumar
Terry Winograd
4

• Suggestions
• More informative evaluation/conclusion
• Dynamic vs. dwell and micro-dwell based
  activation
• A user-learned trigger (neural network)
• Compare with a multi-camera tracking system

Gaze-enhanced scrolling techniques - Manu Kumar
Terry Winograd
5
Evaluating user interface systems researchDan R.
Olsen Jr.

• Strengths
• Discussed the downside of working with stable
  platforms
• Existing system models, based on Windows, Mac,
  and Linux, confine interactive techniques
• Outdated assumptions (hardware/OS users and
  their expertise)
• Extensively detailed approach presenting new
  ideas
• Evaluation errors
• Evaluating effectiveness of systems and tools

6

• Weaknesses
• A difficult read
• Problem, goal, and hypothesis are unclearly
  stated
• Lack of references, but paper authored by keynote
  speaker
• Eight page paper, three references

Evaluating user interface systems research Dan
R. Olsen Jr.
7
Spoken words activating text-to-speech through
eye closureFabian Hemmert Danijela Djokic Reto
Wettach

• Strengths
• Intriguing concept (perhaps the underlying goal)
• Motivates the porting of tasks between sensory
  channels (auditory/visual)

8

• Weaknesses
• Does not clearly define problem, goal, and
  hypothesis
• Applicability (in terms of a text editing
  enhancement)
• More time consuming
• Undetected spelling errors

Spoken words activating text-to-speech through
eye closure Fabian Hemmert Danijela Djokic
Reto Wettach
9

• Suggestions
• Limited auditory review
• Review the last paragraph instead of the last
  sentence
• Provide some distinction between users of the
  control and experimental groups (instead of
  clustering the results under two categories)
• Typing rate
• Error rate
• Average document length
• Social acceptance issues

Spoken words activating text-to-speech through
eye closure Fabian Hemmert Danijela Djokic
Reto Wettach