Probabilistic touchscreen keyboard incorporating gaze point information
Pages 329 - 333
Abstract
We propose a novel probabilistic keyboard that takes into account the distance between a gaze point and a touch position in order to improve typing efficiency. The proposed keyboard dynamically changes the size of the search space for predicting candidate words based on a model that estimates the magnitude of touch position errors according to the distance between the gaze point and the touch position. This makes it possible for users to type intended words even when they glance at different areas on the screen. Performance was evaluated in terms of input accuracy in total error rate (TER) and of typing speed in words per minute (WPM). The results showed that the proposed keyboard successfully reduced the TER by 18.2% and increased WPM by 12.7% compared to the conventional keyboard.
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Index Terms
- Probabilistic touchscreen keyboard incorporating gaze point information
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Published In
September 2014
664 pages
ISBN:9781450330046
DOI:10.1145/2628363
- Conference Chairs:
- Aaron Quigley,
- Sara Diamond,
- Program Chairs:
- Pourang Irani,
- Sriram Subramanian
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Publication History
Published: 23 September 2014
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MobileHCI '14
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MobileHCI '14: 16th International Conference on Human-Computer Interaction with Mobile Devices and Services
September 23 - 26, 2014
ON, Toronto, Canada
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MobileHCI '14 Paper Acceptance Rate 35 of 124 submissions, 28%;
Overall Acceptance Rate 202 of 906 submissions, 22%
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