ABSTRACT
A stylus-based text entry technique called Unipad is presented. Unipad combines single-stroke text input with language-based acceleration techniques, including word completion, suffix completion, and frequent word prompting. In a study with ten participants, entry rates averaged 11.6 wpm with 0.90% errors after two hours of practice. In follow-on sessions to establish the expert potential, four users entered "the quick brown fox" phrase repeatedly for four blocks of 15 minutes each. Average rates on the last block ranged from 17.1 to 35.1 wpm, with peak rates reaching 48 wpm.
- Card, S. K., Moran, T. P., and Newell, A. The psychology of human-computer interaction, Hillsdale, NJ: Lawrence Erlbaum, 1983. Google ScholarDigital Library
- Darragh, J., and Witten, I. The Reactive Keyboard, International Journal of Man-Machine Studies 39 (1993), 521--528.Google Scholar
- Fleetwood, M. D., Byrne, M. D., Centgraf, P., Dudziak, K. Q., Lin, B., and Mogilev, D. An evaluation of text entry in Palm OS: Graffiti and the virtual keyboard, Proceedings of the Human Factors and Ergonomics Society 46th Annual Meeting. Santa Monica, CA, 2002.Google ScholarCross Ref
- Goldberg, D., and Richardson, C. Touch-typing with a stylus, Proceedings of the ACM Conference on Human Factors in Computing Systems - INTERCHI '93. New York: ACM, 1993, 80--87. Google ScholarDigital Library
- Greenberg, S., Darragh, J. J., Maulsby, D., and Witten, I. H. Predictive interfaces: What will they think of next?, Extra-ordinary human-computer interaction: Interfaces for users with disabilities, ed. A. D. N. Edwards. Cambridge, UK: Cambridge University Press, 1995). Google ScholarDigital Library
- Higginbotham, D. J. Evaluation of keystroke savings across five assistive communication technologies, Augmentative and Alternative Communication 8, 258--272.Google ScholarCross Ref
- Isokoski, P. Model for unistroke writing time, Proceedings of the ACM Conference on Human Factors in Computing Systems -- CHI 2001. New York: ACM, 2001, 357--364. Google ScholarDigital Library
- MacKenzie, I. S. KSPC (keystrokes per character) as a characteristic of text entry techniques, Proceedings of the Fourth International Symposium on Human Computer Interaction with Mobile Devices. Heidelberg: Springer Verlag, 2002, 195--210. Google ScholarDigital Library
- MacKenzie, I. S., and Soukoreff, R. W. Phrase sets for evaluating text entry techniques, Extended Abstracts of the ACM Conference on Human Factors in Computing Systems -- CHI 2003. New York: ACM, 2003, 754--755. Google ScholarDigital Library
- MacKenzie, I. S., and Zhang, S. X. The immediate usability of Graffiti, Proceedings of Graphics Interface '97. Toronto: Canadian Information Processing Society, 1997, 120--137. Google ScholarDigital Library
- MacKenzie, I. S., and Zhang, S. X. The design and evaluation of a high-performance soft keyboard, Proceedings of the ACM Conference on Human Factors in Computing Systems - CHI '99. New York: ACM, 1999, 25--31. Google ScholarDigital Library
- MacKenzie, I. S., and Zhang, S. X. An empirical investigation of the novice experience with soft keyboards, Behaviour & Information Technology 20 (2001), 411--418.Google ScholarCross Ref
- MacKenzie, I. S., Zhang, X. I., and Soukoreff, R. W. Stylus tapping on a soft keyboard, Behaviour & Information Technology 18 (1998), 235--244.Google ScholarCross Ref
- Mankoff, J., Hudson, S. E., and Abowd, G. D. Interaction techniques for ambiguity resolution in recognition-based interfaces, Proceedings of the ACM Symposium on User Interface Software and Technology -- UIST 2000, New York: ACM, 2000) 11--20. Google ScholarDigital Library
- Masui, T. An efficient text input method for pen-based computers, Proceedings of the CHI '98 Conference on Human Factors in Computing Systems. New York: ACM, 1998, 328--335. Google ScholarDigital Library
- Oniszczak, A. and MacKenzie, I. S. 2004. A comparison of two input methods for keypads on mobile devices. Proceedings of the Third Nordic Conference on Human-Computer interaction - NordiCHI 2004, pp. 101--104. New York: ACM. Google ScholarDigital Library
- Soukoreff, R. W., and MacKenzie, I. S. Measuring errors in text entry tasks: An application of the Leven-shtein string distance statistic, Extended Abstracts of the ACM Conference on Human Factors in Computing Systems -- CHI 2001. New York: ACM, 2001, 319--320. Google ScholarDigital Library
- Welford, A. T. Fundamentals of skill, London: Methuen, 1968.Google Scholar
Index Terms
- Unipad: single stroke text entry with language-based acceleration
Recommendations
Basic word completion and prediction for hebrew
SPIRE'12: Proceedings of the 19th international conference on String Processing and Information RetrievalThis research aims to improve keystroke savings for completion and prediction of Hebrew words. This task is very important to augmentative and alternative communication systems as well as to search engines, short messages services, and mobile phones. ...
Word Prediction System for Text Entry in Hindi
Word prediction is treated as an efficient technique to enhance text entry rate. Existing word prediction systems predict a word when a user correctly enters the initial few characters of the word. In fact, a word prediction system fails if the user ...
Semantic knowledge in word completion
Assets '05: Proceedings of the 7th international ACM SIGACCESS conference on Computers and accessibilityWe propose an integrated approach to interactive word-completion for users with linguistic disabilities in which semantic knowledge combines with $n$-gram probabilities to predict semantically more-appropriate words than $n$-gram methods alone. First, ...
Comments