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Abstract:
Automatic adaptation has the potential to enhance the performance of a wide variety of assistive technologies. This paper describes two adaptive assistive technologies: (1) a "smart wheelchair" that selects its operating mode based on current task requirements and (2) a row-colunm scanning keyboard that changes its scanning rate to conform to the capabilities of the user. The reasoning method underlying each system’s adaptation decisions, a probabilistic reasoning construct known as Bayesian networks, is also discussed.