Modeling Text Input for Single-Switch Scanning
نویسنده
چکیده
A method and algorithm for modeling single-switch scanning for text input is presented. The algorithm uses the layout of a scanning keyboard and a corpus in the form of a word-frequency list to generate codes representing the scan steps for entering words. Scan steps per character (SPC) is computed as a weighted average over the entire corpus. SPC is an absolute measure, thus facilitating comparisons of keyboards. It is revealed that SPC is sensitive to the corpus if a keyboard includes word prediction. A recommendation for other research using SPC is to disclose both the algorithm and the corpus.
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