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<Paper uid="P98-2227">
  <Title>Head-Driven Generation with HPSG</Title>
  <Section position="7" start_page="1396" end_page="1396" type="concl">
    <SectionTitle>
5 Conclusion
</SectionTitle>
    <Paragraph position="0"> The combination of a head-driven HPSG grammar with a head-driven generation algorithm is a natural approach to surface realization. We showed how van Noord's BUG1 generator can easily be adapted for use with an HPSG grammar implemented in ProFIT, and that this works well if the semantics is strictly head-driven. However, while the apparently clear definition of semantic head in HPSG should make semantic head-driven generation easy to implement, we found that if we implement the full HPSG textbook semantics, with quantifier storage and contextual background conditions, the notion of semantic head becomes unclear. Surprisingly, this natural approach does not work, even for simple examples.</Paragraph>
    <Paragraph position="1"> In order to use semantic head-driven generation algorithms with HPSG, we must adopt recent proposals to include quantifier storage and contextual background inside semantic heads by means of lexical amalgamation. We showed how the grammar in ProFIT can be extended with these proposals.</Paragraph>
    <Paragraph position="2"> We therefore conclude that head-driven generation with HPSG is indeed a feasible approach to surface realization, although there are some technical difficulties. null</Paragraph>
  </Section>
class="xml-element"></Paper>