Ambiguous Keyboards and Scanning: The Relevance of the Cell Selection Phase

Authors:
Julio Miró-Borrás;Pablo Bernabeu-Soler;Raul Llinares;Jorge Igual
Affiliations:
Department of Communications, Universidad Politécnica de Valencia, Alcoy, Spain 03801;Department of Communications, Universidad Politécnica de Valencia, Alcoy, Spain 03801;Department of Communications, Universidad Politécnica de Valencia, Alcoy, Spain 03801;Department of Communications, Universidad Politécnica de Valencia, Alcoy, Spain 03801
Venue:
INTERACT '09 Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction: Part II
Year:
2009

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Abstract

This paper focuses on the relevance of the cell selection phase in the overall performance of a text entry system based on scanning and with an ambiguous keyboard. Most of the layouts are designed trying only to minimize the ambiguity of the keyboard, and taking into consideration only the disambiguation process when entering text. Nevertheless, the number of scan cycles necessary for selecting the cells has great importance in the overall performance. As we show, the performance depends on the number of cells and the linguistic model used in the cell selection phase.