Abstract
A modified pair-wise variability index for evaluating the cognitive difficulty of using mobile text entry systems is proposed. The index is easy to compute from keystroke logs acquired from typing experiments where keystroke times are recorded. The effectiveness of the pair-wise variability index is demonstrated on the keystroke logs acquired using three different text entry strategies.
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Sandnes, F.E., Jian, HL. (2004). Pair-wise Variability Index: Evaluating the Cognitive Difficulty of Using Mobile Text Entry Systems. In: Brewster, S., Dunlop, M. (eds) Mobile Human-Computer Interaction - MobileHCI 2004. Mobile HCI 2004. Lecture Notes in Computer Science, vol 3160. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-28637-0_35
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DOI: https://doi.org/10.1007/978-3-540-28637-0_35
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-23086-1
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