Adaptation in natural and artificial systems
Adaptation in natural and artificial systems
Dialing for documents: an experiment in information theory
UIST '94 Proceedings of the 7th annual ACM symposium on User interface software and technology
Predicting text entry speed on mobile phones
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Text input for mobile devices: comparing model prediction to actual performance
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
LetterWise: prefix-based disambiguation for mobile text input
Proceedings of the 14th annual ACM symposium on User interface software and technology
Games of Life: Explorations in Ecology, Evolution and Behaviour
Games of Life: Explorations in Ecology, Evolution and Behaviour
Alphabetically biased virtual keyboards are easier to use: layout does matter
CHI '01 Extended Abstracts on Human Factors in Computing Systems
Phrase sets for evaluating text entry techniques
CHI '03 Extended Abstracts on Human Factors in Computing Systems
Practices for capturing short important thoughts
CHI '03 Extended Abstracts on Human Factors in Computing Systems
A system for fast, full-text entry for small electronic devices
Proceedings of the 5th international conference on Multimodal interfaces
TiltText: using tilt for text input to mobile phones
Proceedings of the 16th annual ACM symposium on User interface software and technology
Model for non-expert text entry speed on 12-button phone keypads
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
TNT: a numeric keypad based text input method
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
HMS: a predictive text entry method using bigrams
TextEntry '03 Proceedings of the 2003 EACL Workshop on Language Modeling for Text Entry Methods
A new error metric for text entry method evaluation
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Analyzing the input stream for character- level errors in unconstrained text entry evaluations
ACM Transactions on Computer-Human Interaction (TOCHI)
Improving dictionary-based disambiguation text entry method accuracy
CHI '07 Extended Abstracts on Human Factors in Computing Systems
Text Entry Systems: Mobility, Accessibility, Universality
Text Entry Systems: Mobility, Accessibility, Universality
Using paper mockups for evaluating soft keyboard layouts
CASCON '07 Proceedings of the 2007 conference of the center for advanced studies on Collaborative research
Investigating five key predictive text entry with combined distance and keystroke modelling
Personal and Ubiquitous Computing
Improved word list ordering for text entry on ambiguous keypads
Proceedings of the 5th Nordic conference on Human-computer interaction: building bridges
Comparing text entry methods for interactive television applications
Proceedings of the seventh european conference on European interactive television conference
The Evaluation of Operating Posture in Typing the QWERTY Keyboard on PDA
EHAWC '09 Proceedings of the International Conference on Ergonomics and Health Aspects of Work with Computers: Held as Part of HCI International 2009
The one-key challenge: searching for a fast one-key text entry method
Proceedings of the 11th international ACM SIGACCESS conference on Computers and accessibility
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Arranging touch screen software keyboard split-keys based on contact surface
CHI '10 Extended Abstracts on Human Factors in Computing Systems
Design and evaluation of Devanagari virtual keyboards for touch screen mobile phones
Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services
Optimizing a personalized cellphone keypad
ICHIT'11 Proceedings of the 5th international conference on Convergence and hybrid information technology
1 thumb, 4 buttons, 20 words per minute: design and evaluation of H4-writer
Proceedings of the 24th annual ACM symposium on User interface software and technology
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
QWERTH: an optimized semi-ambiguous keyboard design
MobileHCI '12 Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services companion
Design and Evaluation of Soft Keyboards for Brahmic Scripts
ACM Transactions on Asian Language Information Processing (TALIP)
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The creation of text will remain a necessary part of human-computer interaction with mobile devices, even as they continue to shrink in size. On mobile phones, text is often entered using keypads and predictive text entry techniques, which attempt to minimize the effort (e.g., number of key presses) needed to enter words. This research presents results from the design and testing of alphabetically-constrained keypads, optimized on various word lists, for predictive text entry on mobile devices. Complete enumeration and Genetic Algorithm-based heuristics were used to find keypad designs based on different numbers of keys. Results show that alphabetically-constrained designs can be found that are close to unconstrained designs in terms of performance. User testing supports the hypothesis that novice ease of learning, usability, and performance is greater for constrained designs when compared to unconstrained designs. The effect of different word lists on keypad design and performance is also discussed.