Langage ordinaire et modélisation mathématique: quelle fonction d'échange dans la loi du mouvement canalisé d'Accot et Zhai?
Author: 
Yves GuiardAuthors Info & Claims
Yves GuiardAuthors Info & ClaimsPages 11 - 18
Abstract
The steering law, which Accot and Zhai (A&Z) introduced to HCI just ten years ago, has been generally presented as a speed/accuracy tradeoff, but with little explanation of what that phrase means. This paper puts forth various wording inaccuracies that have become customary, since Fitts, in the study of the basic laws of movement. A detailed definition of the tradeoff notion is proposed. With the help of some new terminological distinctions, it is shown that one can indeed express the steering law explicitly as a tradeoff. The analysis, however, reveals that the conflicting quantities are not the speed and the accuracy, but rather the duration and the relative inaccuracy of the steering movement. More work is needed to express the steering law as a speed/accuracy tradeoff.
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Index Terms
- Langage ordinaire et modélisation mathématique: quelle fonction d'échange dans la loi du mouvement canalisé d'Accot et Zhai?
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Published: 12 November 2007
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IHM '07
IHM '07: Proceedings of the 19th international conference on Association Francophone d'Interaction Homme-Machine
November 12 - 15, 2007
Paris, France
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