The Nature of Common Ground Units: an Empirical Analysis Using Map Task Dialogues
نویسندگان
چکیده
This paper evaluates the meso-level 'Common Ground Units' (CGUs) proposed by Nakatani & Traum (1999) by applying this category to four dialogues from the Australian map task corpus. We first consider two formal characteristics of CGU boundaries: associations with following turn boundaries and associations with Intermediate and Intonational Phrases. We then give a profile of CGU initiating, grounding and final elements in terms of DAMSL dialogue act codes. We discuss some of the problems which arise in applying the category of CGU and conclude by proposing some parameters for consideration in a typology of CGUs.
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