Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.
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Transcript of Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.
![Page 1: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/1.jpg)
Principal Investigator Supervisor Co-Supervisor
Edison Mukadah Proff Greg Foster Dr Hannah Slay
![Page 2: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/2.jpg)
Background
• Exponential increase of mobile messaging
SMS MMS Mobile email Chatting …mxit
![Page 3: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/3.jpg)
Problem Statement
• Mobile texting is slow
Guinness world record:192 wpm vs 29 wpm
![Page 4: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/4.jpg)
Problem Statement Cont…
mini EV-K130Xun Chi 138F88 wrist watch Mobile Phone
•Miniaturisation of Mobile Device Faceplate
Problem in fitting all the buttons
![Page 5: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/5.jpg)
Objective of Project
• Design a New Interface and predictive Algorithm
For improved text entry speed
To cater for miniaturised devices
To use a scroll wheel
![Page 6: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/6.jpg)
Why choose a scroll wheel
• Saves Space
• To use agility of the thumb
• More feasible alternative to: Voice input
Stylus based input
Virtual Keyboards
![Page 7: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/7.jpg)
Approach to Project
![Page 8: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/8.jpg)
Literature Survey
Voice Input
![Page 9: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/9.jpg)
Developing The Interfaces
Nokia 5300 Nokia 7380New Interface
![Page 10: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/10.jpg)
Design and Implementation
• 5 Interfaces developed in flash
“T9” (Nokia 5300)
“Multi-Tap” (Nokia 5300)
“scroll Wheel Non-Predictive” (Nokia 7380)
“Scroll Wheel Predictive” (Nokia 7380)
Scroll Wheel Enhanced Prediction (New Algorithm)
![Page 11: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/11.jpg)
Why Use Simulator
• No current phones with hardware capability
• To standardise experiment
![Page 12: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/12.jpg)
User Testing
• To test interfaces in terms of :
Text entry accuracy
Text entry speed
![Page 13: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/13.jpg)
Set-up
Laptop ComputerConnection Cables
Mouse
Speaker
Speaker
LCD Monitor
![Page 14: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/14.jpg)
Procedure
• 10 users recruited
• 5 Interfaces tested
• 5 phrases per interface
![Page 15: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/15.jpg)
Readability Scores
![Page 16: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/16.jpg)
Phrases Used
Phrase Flesch Reading Ease as %
Do you like bad people? 100
Our cause will be for all. 100
I left you side cover. 100
Did you like the rain? 100
I like to ask young people a question. 92.9
Average Score 98.6
![Page 17: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/17.jpg)
ResultsText Entry Speed
8.09
11.85
2.25
4.09
6.04
0
2
4
6
8
10
12
14
Traditional Multi-tap
TraditionalPredictive
Scroll WheelNon-Predictive
Scroll WheelPredictive
Scroll WheelEnhancedPrediction
Interface
Wo
rds
per
Min
ute
(wp
m)
![Page 18: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/18.jpg)
Results ContAverage Error Rates
4.89
2.85
9.06
6.6947.34
0
1
2
3
4
5
6
7
8
9
10
Traditional Multi-tap
TraditionalPredictive
Scroll WheelNon-Predictive
Scroll WheelPredictive
Scroll WheelEnhancedPrediction
Interface
Err
or
Rate
(%
)
![Page 19: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/19.jpg)
Interpretations Speed
• Scroll wheel interfaces generally slower
• “T9” gave the fastest text entry speed
• New Interface gave a 50% speed up compared to Nokia 7300
predictive algorithm
• New Interface gave a 300 % speed up compared to Nokia 7300
non-predictive algorithm
![Page 20: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/20.jpg)
Interpretations
Accuracy
• Scroll wheel interfaces generally more error prone
• “T9” gave lowest error rate
• New Interface is slightly more error prone compared to Nokia 7300
predictive algorithm
• Nokia 7300 non-predictive was more difficult to use hence it had more errors.
![Page 21: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/21.jpg)
Future Work
• Use a real hardware device
• Implement Contextual prediction
• Use a pressure sensing touch-pad to implement scrolling
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Demo:
![Page 23: Principal Investigator Supervisor Co-Supervisor Edison Mukadah Proff Greg Foster Dr Hannah Slay.](https://reader035.fdocuments.net/reader035/viewer/2022062307/55176abf5503463e368b4a54/html5/thumbnails/23.jpg)
ANYONE WITH A