Quantitative analysis of backchannels uttered by an interviewer during neuropsychological tests

International audienceThis paper examines in detail the backchannels uttered by a French professional interviewer during a neuropsychological test of verbal memories. These backchannels are short utterances such as oui, d'accord, uhm, etc. They are mainly produced here to encourage subjects to retrieve a set of words after their controlled encoding. We show that the choice of lexical items, their production rates and their associated prosodic contours are influenced by the subject performance and conditioned by the protocol

A study of turn-yelding cues in human-computer dialogue

Previous research has made signi cant advances in under- standing how humans manage to engage in smooth, well-coordinated conversation, and have unveiled the existence of several turn-yielding cues | lexico-syntactic, prosodic and acoustic events that may serve as predictors of conversational turn nality. These results have subse- quently aided the re nement of turn-taking pro ciency of spoken dia- logue systems. In this study, we nd empirical evidence in a corpus of human-computer dialogues that human users produce the same kinds of turn-yielding cues that have been observed in human-human interac- tions. We also show that a linear relation holds between the number of individual cues conjointly displayed and the likelihood of a turn switch.Sociedad Argentina de Informática e Investigación Operativa (SADIO

A study of turn-yelding cues in human-computer dialogue

Previous research has made signi cant advances in under- standing how humans manage to engage in smooth, well-coordinated conversation, and have unveiled the existence of several turn-yielding cues | lexico-syntactic, prosodic and acoustic events that may serve as predictors of conversational turn nality. These results have subse- quently aided the re nement of turn-taking pro ciency of spoken dia- logue systems. In this study, we nd empirical evidence in a corpus of human-computer dialogues that human users produce the same kinds of turn-yielding cues that have been observed in human-human interac- tions. We also show that a linear relation holds between the number of individual cues conjointly displayed and the likelihood of a turn switch.Sociedad Argentina de Informática e Investigación Operativa (SADIO