Dialogue experiment for elderly people in home health care system

This paper reports a Wizard-of-Oz (WOZ) experiment for elderly in the home health care system we have developed. We collect dialogue examples of elderly users through the WOZ experiment and conduct a recognition experiment for collected elderly speech. The experimental result demonstrates that user's responses following system's questions tend to consist not bare Yes/No answers but content words without Yes/No words. The result of the recognition experiment also shows that the performance of speech understandings is improved using the speech recognition technique controlled by expected plans based on the result of the WOZ experiment.