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Panu Korhonen

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Publications by Panu Korhonen (bibliography)

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» 2003 «

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Cockton, Gilbert and Korhonen, Panu (eds.) Proceedings of the ACM CHI 2003 Human Factors in Computing Systems Conference April 5-10, 2003, Ft. Lauderdale, Florida, USA.

» 2000 «

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Silfverberg, Miika, MacKenzie, I. Scott and Korhonen, Panu (2000): Predicting Text Entry Speed on Mobile Phones. In: Turner, Thea, Szwillus, Gerd, Czerwinski, Mary, Peterno, Fabio and Pemberton, Steven (eds.) Proceedings of the ACM CHI 2000 Human Factors in Computing Systems Conference April 1-6, 2000, The Hague, The Netherlands. pp. 9-16. Available online

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.

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Changes to this page (author)

19 Feb 2010: Enabled abstracts to be shown on Panu Korhonen's author page.
06 Nov 2007: Author was edited (approved by an editor)
28 Apr 2003: Added the author to the bibliography

Publication statistics

Publication period:2000-2003
Publication count:2
Number of co-authors:3



Productive colleagues

Panu Korhonen's 3 most productive colleagues in number of publications:

I. Scott MacKenzie:59
Gilbert Cockton:55
Miika Silfverberg:5


Collaboration count

Number of publications with 3 favourite co-authors:

I. Scott MacKenzie:1
Miika Silfverberg:1
Gilbert Cockton:1

 

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Mar 20

Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context.

-- Floyd, 1992, p. 24

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