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<Paper uid="W94-0317">
  <Title>Planning Reference Choices for Argumentative Texts</Title>
  <Section position="7" start_page="151" end_page="151" type="concl">
    <SectionTitle>
8 Conclusion
</SectionTitle>
    <Paragraph position="0"> This paper describes the way in which PROVERB refers to previously conveyed intermediate results and inference methods while verbalizing natural deduction style proofs.</Paragraph>
    <Paragraph position="1"> By distinguishing between the planned and unplanned part of NL generation, PRO VERB achieves a natural segmentation of context into an attentional hierarchy. Based on this segmentation, PROVERB makes reference decisions basically according to a discourse theory adapted from Reichmann for this special application. The first experience shows that output texts are of good quality.</Paragraph>
    <Paragraph position="2"> Currently, it proves difficult to compare text generated by PROVERB with naturally occurring texts, since the latter are usually at a still higher level of abstraction then the assertion level proofs we can reconstruct \[Hua94a\].</Paragraph>
    <Paragraph position="3"> Nonetheless it might still be useful to build up a small corpus of texts. On the other hand, the naturMness of references could also be improved by further experimenting with different settings of the ad hoc thresholds in the system. We are also exploring more flexible lexicon choices as well as refinement of text planning process.</Paragraph>
    <Paragraph position="4"> Acknowledgment This work was supported by the Deutsche Forschungsgemeinschaft, SFB 314 (D2).</Paragraph>
    <Paragraph position="5"> Thanks are due to Dan Nesmith, who carefully read this final version. I am also grateful to the two anonymous reviewers for their critical and constructive remarks.</Paragraph>
  </Section>
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