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<Paper uid="P00-1053">
  <Title>A Hierarchical Account of Referential Accessibility</Title>
  <Section position="5" start_page="5" end_page="5" type="concl">
    <SectionTitle>
Conclusion
</SectionTitle>
    <Paragraph position="0"> Veins Theory is based on established notions of discourse structure: hierarchical organization, as in the stack-based model and RST's tree structures, and dominance or nuclear/satellite  relations between discourse segments. As such, VT captures and formalizes intuitions about discourse structure that run through the current literature. VT also explicitly recognizes the special status of the left satellite for discourse structure, which has not been adequately addressed in previous work.</Paragraph>
    <Paragraph position="1"> In this paper we have shown how VT addresses the left satellite problem, and how VT can be used to address various issues of structural ambiguity. VT predicts that references not resolved in the DRA of the unit in which it appears are more difficult to process, both computationally and cognitively; by looking at cases where VT fails we determine that this claim is justified. By comparing the types of referring expressions for which VT and the stack-based model fail, we also show that VT provides a better model for determining DRAs.</Paragraph>
  </Section>
class="xml-element"></Paper>