A recording device called the Electronically Activated Recorder (EAR) is described. The EAR taperecords for 30 sec once every 12 min for 2-4 days. It is lightweight and portable, and it can be worn comfortably by participants in their natural environment. The acoustic data samples provide a nonobtrusive record of the language used and settings entered by the participant. Preliminary psychometric findings suggest that the EAR data accurately reflect individuals' natural social, linguistic, and psychological lives. The data presented in this article were collected with a first-generationEAR systembased on analog tape recording technology, but a second generation digital EAR is now available.
We discuss the construction of task-oriented interfaces and argue that they must adapt themselves to each individual user's behaviour. Because of the variation between users, it is impracticable to attempt to build irt a priori assumptions about the user. We present an adaptive interface system, DB_Habits, which shows that it is possible, however, to incorporate knowledge about the underlying system, and which uses this to recognise repeated sequences of commands issued by the user which represent the user's higher-level tasks. DB_Habits uses the command sequences found, to collaborate with the user in achieving the user's tasks and is malleable i.e. can be easily adapted by the user to support their tasks. We present results showing the effect of incorporating simple command syntax knowledge on the performance of the system.
This short paper discusses some early work on the HalCIon project. The objective of this project is to develop an educational hypermedia CD-ROM teaching principles and practices of Human-Computer Interaction to a commercial audience.
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