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<Paper uid="P91-1004">
  <Title>Toward a Plan-Based Understanding Model for Mixed-Initiative Dialogues</Title>
  <Section position="7" start_page="30" end_page="31" type="concl">
    <SectionTitle>
6. Conclusion
</SectionTitle>
    <Paragraph position="0"> In this paper we present an enhanced model of plan-based dialogue understanding. Our analysis demonstrates that the joint-plan assumption employed in the \[Litman and Allen, 1987\] model is too restrictive to track an individual speaker's instantiated plans, ac- null count for active planning behind speaker utterances and track the transfer of conversational initiative control in dialogues, all of which characterize mixed-initiative dialogues. Our model employs speaker-specific domain plan libraries and the incremental expansion of domain plans to account for these mixed-initiative dialogue phenomena. We have used representative dialogues in two languages to demonstrate how our model accounts for these phenomena.</Paragraph>
  </Section>
class="xml-element"></Paper>