Predicting text entry speed on mobile phones
By Miika Silfverberg, I. Mackenzie, Panu Korhonen. International Conference on Human Factors in Computing Systems, 2000
372 citations recorded by the source corpus.
We present a model for predicting expert text entry rates for several input methods on a 12-key mobile phone keypad. The model includes a movement component based on Fitts' law and a linguistic component based on digraph, or letter-pair, probabilities. Predictions are provided for one-handed thumb and two-handed index finger input. For the traditional multi-press method or the lesser-used two-key method, predicted expert rates vary from about 21 to 27 words per minute (wpm). The relatively new T9 method works with a disambiguating algorithm and inputs each character with a single key press. Predicted expert rates vary from 41 wpm for one-handed thumb input to 46 wpm for two-handed index finger input. These figures are degraded somewhat depending on the user's strategy in coping with less-than-perfect disambiguation. Analyses of these strategies are presented.
Subfields: Cognitive Neuroscience, Human-Computer Interaction
View Paper: https://www.semanticscholar.org/paper/2927b1579e60075caceac5d3e60143ff2ebeb28c
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Cognitive Neuroscience
- I. Mackenzie
- R. William Soukoreff
- David John Cameron MacKay
- David J. Ward
- Chi Zhang
- Rui Yao
- Alan F. Blackwell
- Jinpeng Cai
In Human-Computer Interaction
- I. Mackenzie
- R. William Soukoreff
- David John Cameron MacKay
- Chi Zhang
- Rui Yao
- Jinpeng Cai
- David J. Ward
- Alan F. Blackwell
Citations in the corpus
- Efficient eye typing with 9-direction gaze estimation (2017, methodology): “On a bar phone with a word prediction and completion function, users can at most type in 46 words per minute using the T9 input method [6].”
- Text Entry for Mobile Computing: Models and Methods,Theory and Practice (2002, methodology): “The models created by Silfverberg et al. (2000) predict about 21 to 27 wpm for the multitap method and the two-key method.”
- Dasher—a data entry interface using continuous gestures and language models (2000, methodology): “The T9 text input system uses the conventional mapping of alphabetic characters onto a telephone keypad, with a dictionary to help disambiguate alternative readings [25].”