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Not Just Pointing: Shannon's Information Theory as a General Tool for Performance Evaluation of Input Techniques

Abstract : Input techniques serving, quite literally, to allow users to send information to the computer, the information theoretic approach seems tailor-made for their quantitative evaluation. Shannon's framework makes it straightforward to measure the performance of any technique as an effective information transmission rate, in bits/s. Apart from pointing, however, evaluators of input techniques have generally ignored Shannon, contenting themselves with less rigorous methods of speed and accuracy measurements borrowed from psychology. We plead for a serious consideration in HCI of Shannon's information theory as a tool for the evaluation of all sorts of input techniques. We start with a primer on Shannon's basic quantities and the theoretical entities of his communication model. We then discuss how the concepts should be applied to the input techniques evaluation problem. Finally we outline two concrete methodologies, one focused on the discrete timing and the other on the continuous time course of information gain by the computer.
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https://hal.archives-ouvertes.fr/hal-02090158
Contributor : Yves Guiard <>
Submitted on : Thursday, April 11, 2019 - 11:06:27 AM
Last modification on : Monday, October 19, 2020 - 10:19:52 AM

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  • HAL Id : hal-02090158, version 1

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Yves Guiard, Julien Gori, Quentin Roy, Olivier Rioul. Not Just Pointing: Shannon's Information Theory as a General Tool for Performance Evaluation of Input Techniques. 2017. ⟨hal-02090158⟩

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