<?xml version="1.0" standalone="yes"?>
<Paper uid="P96-1020">
  <Title>Pattern-Based Context-Free Grammars for Machine Translation</Title>
  <Section position="8" start_page="149" end_page="149" type="concl">
    <SectionTitle>
6 Conclusions and Future Work
</SectionTitle>
    <Paragraph position="0"> Some assumptions about patterns should be re-examined when we extend the definition of patterns.</Paragraph>
    <Paragraph position="1"> The notion of head constraints may have to be extended into one of a set membership constraint if we need to handle coordinated structures (Kaplan and Maxwell III, 1988). Some light-verb phrases cannot be correctly translated without &amp;quot;exchanging&amp;quot; several feature values between the verb and its object. A similar problem has been found in be-verb phrases.</Paragraph>
    <Paragraph position="2"> Grammar acquisition and corpus integration are fundamental issues, but automation of these processes (Watanabe, 1993) is still not complete. Development of an efficient translation algorithm, not just an efficient parsing algorithm, will make a significant contribution to research on synchronized grammars, including STAGs and our PCFGs.</Paragraph>
  </Section>
class="xml-element"></Paper>