Adaptive one-switch row-column scanning.

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-12-01 DOI:10.1109/86.808950

R C Simpson, H H Koester

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引用次数: 116

Abstract

Row-column scanning is a very slow method of communication. Options for increasing text entry rate include 1) dynamically changing the configuration of the row-column matrix or 2) using rate-enhancement techniques like word prediction, but evidence suggests that increased cognitive load imposed by these methods on the user can result in little or no improvement in text generation rate. An alternative we are investigating is adapting a system's scan delay during run-time. Our goal is to allow a scanning system to adjust its parameters "on the fly" (as opposed to the current practice of setting parameters during clinical assessments). This paper describes the evolution of a one-switch row-column scanning system that adapts its scan rate based on measurements of user performance. Two experiments have been performed to explore the effects of automatically adapting scan delay on users' text entry rate. Our results indicate that automatic adaptation has the potential to enhance text-entry rate without increasing task complexity.

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自适应单开关行-列扫描。

行-列扫描是一种非常慢的通信方法。提高文本输入率的选项包括1)动态改变行-列矩阵的配置或2)使用像单词预测这样的速度增强技术，但有证据表明，这些方法增加了用户的认知负荷，对文本生成率的提高很少或没有效果。我们正在研究的另一种方法是在运行时调整系统的扫描延迟。我们的目标是允许扫描系统“在飞行中”调整其参数(与目前在临床评估期间设置参数的做法相反)。本文描述了一种基于用户性能测量来调整扫描速率的单开关行列扫描系统的发展。两个实验探讨了自动适应扫描延迟对用户文本输入率的影响。我们的研究结果表明，自动适应有可能在不增加任务复杂性的情况下提高文本输入率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society

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