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<Paper uid="P91-1007">
  <Title>A TRIPARTITE PLAN-BASED MODEL OF DIALOGUE</Title>
  <Section position="7" start_page="53" end_page="53" type="concl">
    <SectionTitle>
6 Conclusions
</SectionTitle>
    <Paragraph position="0"> We have presented a tripartite model of dialogue that distinguishes between domain, problemsolving, and discourse or communicative actions.</Paragraph>
    <Paragraph position="1"> By modeling each of these three kinds of actions as separate tree structures, with links between the actions on adjacent levels, our process model enables the incremental recognition of discourse actions that cannot be identified from a single utterance alone. However, it is still able to capture the relationship between discourse, problemsolving, and domain actions. In addition, it provides a more finely differentiated representation of user intentions than previous models, allows the nuances of different kinds of processing (such as different focusing expectations and information retention) to be captured at each level, and accounts for implicit acceptance of a communicated proposition.</Paragraph>
    <Paragraph position="2"> Our current work involves using this model to handle negotiation dialogues in which a hearer does not automatically accept as valid the proposition communicated by an inform action.</Paragraph>
  </Section>
class="xml-element"></Paper>